TOP 5 Common Nitro RC Issues and Headaches. (MY HPI RS4-2 has these)

Lets talk about the common issues that we all have, have had, or will have when you run pretty much any nitro RC cars, especially if they are aging. This one is a 20 year old HPI Nitro RS4-2 with an OS 12 VX-X motor, it's got a couple of the issues I mentioned here.
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[@vfrlunatic02]

I did a hack to my pull start and EZ start about 15 years ago. What you do is put a fuel fitting through the pull start. Drilling a hole right through the center of the mechanism so as not to mangle the string and bearing holder. After you've mounted the fitting (with a little fuel tubing) to the mechanism, you can now spray a quick shot of WD-40 into the pull start that will soak the one way bearing and viola your one way bearing is working again until you need another shot. I don't remember where I saw someone do that. It must have been on a traxxas forum, but it'll work on any RC that uses a one way bearing. The hack has greatly increased the life of my one way bearings. This will come in really handy when manufactures discontinue a model or part.

[@hybrid32494]

hey my dude! great idea, really appreciate the hint and for keeping nitro alive. Ive been doing another fix lately, I've been lightly sanding (dremeling) the starting shaft to create a little more friction for the bearing. And guess what? It's worked. the bearing catches much easer, but you really have to be careful and only do light scoring of the shaft.

[@reaklyf3451]

is there a video somewhere how to do it?

[@pochyeloco]

love your vids man keep them coming love the old school memories

[@hybrid32494]

Hey bro!! Glad to see you found my channel, welcome to the NitroGang!! Haha. My newer vids are great too. Im leading a whole hpi savage xl 3-speed gear shifting investigation. Literally.

[@martinhogan5970]

About to pull my Nitro RS-4 off the shelf and found your page. Thanks for the insight!

[@hybrid32494]

hey my dude! Glad to have motivated you, this comment made my day. Today I ran into my own foot with an RC10GT, I got ice on it right now, PISSED, lol.

[@TAMIYALegends]

Wrinkle free shirt bit made me giggle my friend 😂😂😂 Big thumbs up 👍🏻

[@hybrid32494]

hahaha, thanks man. It's the little motivations like that wrinkled shirt that make me put these vids out, ahahah.

[@slothbowyer3926]

Hand made a throttle arm, next is the rear ball diff, the nitro gang all day

[@DomVito87]

Its really refreshing to see people still into nitro! Thanks. Def will sub!

[@hybrid32494]

hey man!! thanks so much!! Glad you appreciate this still, I know I do. I'm literally wrenching on this NITRO RS4 right now while eating oatmeal and writing this comment, ahahah. BTW check out the newer vid I have with the RPM gauge as the thumbnail. I ran this with a new and good pipe towards the end, with some foam tires. Damn 2 speed still won't shift though.

[@DomVito87]

@@hybrid32494 Oh ive watch a good amount of your videos lol... Right now restoring thee old nitro Revo with the 2.5r at the moment. An will be working on an old Nitro sport too! Glad that people still get into it. Makes me feel like nitro isnt too dead lol.

[@hybrid32494]

I just ran my revo with a OS 18 TZ motor last week, gotta scythe best overall nitro truck there is in that scale. I also used to have the original 2.5r like you, it was so damn amazing when it came out right!!! That platform has aged well too and still exists in many modern traxxas rcs. Good luck!!! keep nitro alive brotha!!!

[@limited50scla]

Dom Vito I posted a picture of 2 gallons of Traxxas top fuel on my IG. One guy said, “ That’s I a don’t mess with nitro” referring to the nitro prices lol

[@2stroke4me]

Just a tip; Let your fuel line run underneath the engine to the rear of the car and reposition the fuel inlet of the carburetor. Some engine mounts have holes in them for the fuel line to pass through, but it's also possible with the original mounts. Longer fuel lines make the engine run more stable too. O.S. pull starters are notorious for slipping. Just restored a first gen Nitro RS4 with an O.S. 15CV, really lovely car and fantastic engine! Take care of it, parts are getting hard to find.

[@hybrid32494]

great idea with the fuel line routing, I knew about the extra length of fuel line being good, but Ran out of fuel line before I got to do that. When I fix the broken pipe I will work on the fuel lines too. On your nitro rs4 are you running a pullstart or starter box? As you can tell mine is a pull start, I am wondering if I can use a starter box and not remove the pullstart assembly. Should be ok right? The backplate is the ideal way, but don't have that now.

[@2stroke4me]

@@hybrid32494 Yeas, i have pullstart engines on all of my RC's (except for some of the classics). Using a starter box shouldn't be a problem, but if you prime the engine before starting (just blow into the pressure line until a bit of fuel goes through the carburetor) and the engine is tuned correctly, it should start up, even with the slipping one way bearing. I have a couple of 20+ year old O.S. engines with slipping pull starters, and they have no problem firing up on that one rotation of the crank shaft, although sometimes the engine runs in reverse (!).

[@hybrid32494]

I never had an engine run in reverse, lol. But I guess there is nothing physically stopping it from doing that other than a properly working one way bearing. I need to get any cheap starter box at this point, that will also work for a 1/8 buggy.

[@2stroke4me]

@@hybrid32494 So far, it only happened to my O.S. 21 RG(P) engines. Just about any engine sometimes has the tendency to run in reverse (when the pullstarter pulls back) but is stopped by the one way bearing. My O.S's run in reverse like there's no one way bearing at al, lol (caught it on video once)! Really like your videos mate, keep 'em coming :D

[@limited50scla]

2stroke4me great tip, it’ll save the fuel line from risking getting caught in the gears

[@jimmiller7361]

Sounds like you know what you're doing, giving good advice too.

[@jjones9143]

Good video. I have one of those with the same engine except it's a. 15. Same deal with the 2 speed. I have had it over 15 years. I could put it away for months and a year or too and it would always start and run like new. I just dug it out of my dads shed after sitting for over 5 years. Pull start is alittle stuck. Gonna take it apart and clean it up and getting her rippin again. Seeing this video brings back so many memories.

[@hybrid32494]

hey my dude! I'm glad I was able to get you back on the Nitro Path of FUN!! lol. I still have this one and will probably never sell it. I'm sure you just need to open the head up and backplate and put some oil and heat it up with a heat gun and it will be like new and unseized. NItrogang!!

[@emr550m]

your videos are so explaining and helps a lot for beginners. you should do detailed engine setting video for each of your rc cars.

[@cross7776]

Good stuff man

[@buffalosoldier4717]

Great video very informative

[@julito3054]

Great vids. Ive gotten into buying nitros online and restoring and upgrading. Somtimes the build is more exciting. My latest project was a vintage Nitro Hawk. I made it from 2 donors and a few parta that i had to buy. It is probably going to be tested a few times and retiring to the shelf. Yep it came out that nice. Just swapped a .21 big block carb on my 3.3 Jato. I got a Madstorm thats 90% completed. I want to see what u done to it. Thanks your videos are very imformative and overall great to watch for rc know how.

[@hybrid32494]

hello, thanks so much for watching. You've got a great early traxxas nitro, the Hawk was their first nitro model. I have been shopping for one for a while now, there is one on ebay for 200 now, in good shape. I have since decided to go back to NITRO instead of brushless on the madstorm, will be going with an HPI savage 25 engine looks like. goodluck on your projects, keep me updated on them too.

[@bradleypendleton202]

Great video dude. In the next few days my new nitro rc should come. It’s a thunder tiger ts4n it’s a lot like the hpi rs4. It’s about 21 years old I will be making some videos of it soon

[@hybrid32494]

hey man, ye I remember you told me you got that one on ebay. These old Nitro cars always have some hidden issues, lol. that's part of the fun with them I'd say. I just subd you so i'll get the notification when you do. I'm looking for a nitro TC3 from that era now too.

[@theirishaxe9405]

👍 I could never get my tmaxx to run the same two days in a row, or even two tanks of fuel in a row lol. Good video man

[@hybrid32494]

sorry to hear that dude!! You definetly had a vacuum leak or a fuel pressure issue somewhere. Or the carb was clogged and was not respond to your tuning adjustments. thanks for watching!!!

[@theirishaxe9405]

@@hybrid32494 👍

[@derrick6483]

Great information. I myself have never had a one way bearing slip unless it was worn out and needed replacement. I always put a little 3 in 1 oil or WD-40 on the needles when I go through my engines. Maybe I've just been lucky but I believe it's just fine to lubricate them. Thanks for the tips on Tuning and the clutch spring affecting idle. I never thought of that. Glad I saw this!

[@hybrid32494]

hey my dude! I'm currently battling a one-way bearing slip again. The backplate must be worn and letting too much oil slip through.

[@derrick6483]

@@hybrid32494 Man do you really think that's it? I'm just saying... Like I said in the previous post, I've never had an issue with them slipping even with oil on them. Only if they are worn in my experience. In the previous post I was referring to the needle bearings In the one way... not the low and high speed needles. Sry for wording it in a confusing fashion. Good luck with that! Let me know how you make out plz. Later brotato. LOL

[@hybrid32494]

hey!! Yup, I'm 100% sure it's because oil is coming through the backplate seals. It's confirmed because when I clean the one way bearing itself it does not slip and starts right up. right after the engine runs half a tank, the bearing is slipping again. Unfortunate these damn one way bearings are so pricey, I rem paying almost 20 bucks for one years ago.

[@derrick6483]

@@hybrid32494 Yes indeed they are expensive! Well I just figured I'd share my experience with them. I hope you get it all worked out buddy. Have a good night. Later

[@rcsendandblast1579]

Thanks for your help I found my gas cap was not closing all the way I just got a real new old Revo 3.3 given to me Wow what a nice RC it is I still need to tune it for sure. 👍

[@hybrid32494]

hey man! You got it! I'm happy you were able to make another Nitro Great Again! Literally! ahah. Anyway yes, the REVO 3.3 is basically the top notch of the RTR nitro truck market, it's the BIG BOSS of the Traxxas World. Thats why I have 2 of them, ahaha. Let me know if you ever need any tuning or tuning advice, I'm always happy to help.

[@rcsendandblast1579]

@@hybrid32494 ❤️👊😊 Dude you have No idea how much that brought a smile to my face. I am so tired and stink like nitro fumes. I’ve been at this all day and I think I got into to much trouble being away from the family playing with this car today. Lol Well as a matter of fact I’ve been surfing your vids looking for tuning advice. The truck seems gutless and won’t shift I think it’s either gummed up somewhere still or ? I don’t know really I can’t see what the issue is I tuned it to stock and turned the idle up a bit to get it to run but hitting the brakes always kills it 😂and I have adjusted that screw that ia supposed to stop that but then it’s to high and the wheels want to go spinning and I can’t start it like that. Yes I need help it’s obvious to me now.

[@erwinmaes3105]

great video, now i know why my pullstarter fails sometimes

[@hybrid32494]

hey man!!! thanks for watching. I guess you got the classic One-Way bearing issue, right?? I'm dealing with that in about 50% of my nitros at this time also. lOL.

[@nadjiselim6168]

I wish I lived where that beach is...! My o my how lovely is that place. Empty beach, empty roads. You should come to London... Its PACKED lol... Keep up the good work with the rc cars hybrid32494

[@hybrid32494]

hey man, this was literally the only time it looked this abandoned, usually alot of traffic here. It was just pretty cold and nobody was out. thanks for watching!!!

[@cffps7198]

My only on road car I have that I’m working on right now is a nitro NTC3 with a 2 speed

[@hybrid32494]

nice rc man!! Im looking for that one right now. I used to love them back then, such a. good chassis, especially the basic TC3.

[@Uristypes]

Yoooo i have that car too. Been working on it for years

[@limited50scla]

Just got my Hpi rs4 racer running today. Been sitting for 10 years. Got a battery pack for my ms3x and used a revo 3.3 air filter foam for my motor saver. Started after a few tires* forgot I closed the needle 😂 need some steering and throttle adjustments and it’ll be okay. I have 4 - rs4s now lol. Got my revo 3.3 running this past week too. I grabbed 2 gallons of Traxxas top fuel 20% for $30 not bad.

[@hybrid32494]

good job man!! nothing like the first start in a few years on these old nitros, right!!!! Howd you get such cheap nitro fuel? that's a deal of a lifetime for 20 bucks, lol.

[@paddyladdd9395]

Would u sell one as I need a one for drifting ?

[@SargeScum]

I recently revived my Losi Ten T nitro truggy. Just replaced the electronic shiety start system with a simple pull starter.

[@hybrid32494]

you got lucky you only needed a pullstart. Thats one thing I like about nitro, they last a while if taken good care of. Good job, keep nitro alive!!!!

[@Hardy_boy1]

Great video

[@hybrid32494]

hey man!! thanks!! I'm working on the few issues this thing has right now, soon will attempt to get the 2-speed to shift, that's always a mystery with these, lol.

[@Hardy_boy1]

@@hybrid32494 Hope it gets fixed. I like seeing those cars in action, I've never owned one but I had a friend in high school that had one

[@gorillabeartech4577]

You are the hybrid gangster yo !

[@hybrid32494]

yep man! thats the goal. Finally somebody noticed. I also have a SMART FOR TWO and a V8 Lincoln, so its all balanced out. ahahaha.

[@gorillabeartech4577]

@@hybrid32494 I responded to the majority of your messages. Check them out man. I'll be making some more rc videos tommorow so stay tuned brother !!!!!!. I think I'm going to turn my extra brushed Traxxas rustler that I have laying around with no wheels, no receiver, no transmitter and no esc or motor into a mamba monster or a Tekin project 1/8th scale brushless system with a battery expansion kit that I have in my box. I still have the waterproof Stock Traxxas steering servo attached to it to. I was trying to get rid of the chassis since I sold off all the stock electronics except for the steering servo in it. I even took the 48 pitch gears off of it and may sell them. I sold the stock TQ Traxxas remote, receiver and Titan 12 turn brushed 550 motor and xl-5 esc plus the stock front alias and rear alias wheels for it. I just have the cars chassis with an attached RPM black front bumper and stock shocks. I'm really thinking of converting it to a 1/8 the scale Draven3907 project. By the way checkout Draven3907 on KZbin his rustler went up to 134 mph I believe. It was a fully blown stock rustler with very minimal upgrades using a 1/8 brushless system and 32 pitch mod 1 gears with aftermarket wheels like foams and such. That means I'd have a mamba monster 1/8th e Revo and a mamba monster 1/10 rustler or whatever system I put in it if I happen to not want to spend that 250-350 bucks on a mamba monster castle system. I don't know what I'll be doing with it but I'm thinking aftermarket gearbox and maybe an aluminum custom underplate for it. I just don't like how the stock Traxxas Rustler and Bandit chassis both peel back easy when you hit a sidewalk curb. Even my gearboxes have slightly peeled back from doing wheelies without wheelie bars before I bought the wheelie bars for them.

[@hybrid32494]

your gonna have a crazy rustler on your hands man!! I always have a hard time breaking 50 LOL. I hate spending money of gears thats why. The damn pinion grub screws strip sometimes, it pisses me off. BTW I got a used rustler with a 1/8 scale system in it and super high gearing, looks like the trans might be messed up, gotta work on it. Its got the foams too, and solid front end (no shocks).

[@gorillabeartech4577]

hybrid32494 WOW !!!! Lol

[@frank.l181]

I had problem with carburater throttle frozen shut from fuel gummed it up. I removed it took the rubber boot and O ring off and soaked it in brake cleaner. Good idea to replace the o ring on the carb periodically.

[@Sp00ns655]

when doing a compresion test its best to test it after running when the engine is hot. Thats when you will notice the compresion loss

[@totallynotrippin2422]

My oldest car is a nitro 4tec!!!! from 2003!!!! I WAS BORN IN 2003!!!

[@hybrid32494]

whats up my fellow Nitro BRother! I used to have that model 4-tec when it first came out, I was in high school at the time. Lets keep nitro alive, hope you can check out my newer vids, I can guarantee you they will blow you away.

[@calvinjones7795]

I have same motor in my NTC3 starts every time about 20 years old..

[@markmax9539]

Hi. I have a hpi rs4nitro I've addressed all off the gremlins lol eny idea's on how to protect the gears from small stones. They should b covered some way.? Mark.

[@gorillabeartech4577]

I love it when companies add those racing aluminum or steel plates underneath their cars. Hpi and arrma are known for craftsmanship like that. Traxxas seldomly does that. You gotta spend more money to prevent more damage which is alright with me but still kinda poor. I love Traxxas regardless but damn man they just recently started adding more aluminum to their newer models because of the competition lol. If they made their electric models just like some of their nitro models it would be more worth buying. To be honest though Traxxas's models are durable as HECK regardless and there material that they use for their chassis's is amazing quality for the majority of the time. T-Bone chassis's can remedy that though but 35-85 bucks for a T-Bone chassis is slightly insane. Sometimes I worry wnout cracking my rustlee, bandit and 1/16 e Revo chassis's lol.

[@hybrid32494]

you're right man, although the plastic chassis are not as strong, they are flexible. The flex is the compromise but they rarely break also because they are lights. I actually don't like alot of aluminum because it bends easy and screws can loosen up there, plus its heavier. Some parts should be aluminum though, like shocks and steering components.

[@gorillabeartech4577]

@@hybrid32494 Yeah it's a b**** at times man...... I just don't like how the plastic material or whatever it's made of shreds up easy from scaping/rubbing up across a sidewalk cement curb. It peels and shreds alittle too easy that's the only thing I don't like about them.... Yes you are right they should supply their models with aluminum built shocks instead if they won't make the chassis that way. Aluminum front and rear shock towers would be great to.

[@muhdnabil1337]

I have problem with the 2nd gear not shifting. Have link for any solutions videos?

[@FargothPL]

A carburettor cleaner (especially the better ones) can damage various rubber seals. For example, rubber o-rings will begin to swell and will not return to their original size. One time after I unscrewed the HSN and couldn't put it back in - the original o-ring gasket did not want to go inside. When I finally manage to do it, screwing the needle in, it cut off all the way around. After that, the HSN was loose and started to unscrewing by itself while driving. Since then, I stopped unscrewing HSN and I use only a compressor, WD40 and ARO to clean the carburettor.

[@FargothPL]

By the way ... As for maintenance one-way bearing. Cleaning and matting the shaft with sandpaper only works for a short time. The best way to make a permanent repair slipping in your pull starter is to replace the one way bearing with a new one. Old hex one-way bearing can be rebuilt by removing the old bearing and pressing inside a new one in its place. For 10 such bearings, I paid about $4 and I just replaced two of them in my old VX18 engine. Otherwise, it's a frustrating endless struggle with your pull starter.

[@hybrid32494]

hey buddy! thank you for watching and all your advice. you're right about alot of this stuff, I agree. As an experiment in a newer video of mine I sanded and used a Dremel on an HPI G3.0 engines starting shaft to fix a slipping bearing to test out if it was a permanent fix. I can tell, I can still easily start that engine even after a quart of fuel though it, and it does not seem to be slipping at all, even with the old bearing. I was totally surprised myself.

[@FargothPL]

@@hybrid32494 Thanks for the answer and for the great videos. They give me a lot of joy and are very interesting! I haven't watched that video yet, but weren't you worried that you would scratch too deep the shaft, with a Dremel and these deep scratches would faster wear or will destroy the one-way bearing? Is this a permanent solution... I don't think so. These bearings have plastic cages for rollers - sooner or later, they will wear out and possibly fall apart. Same with the crankshaft shaft - will slowly polish itself. While struggling with this problem, I came to the conclusion that saving them is not worth the effort, and this slipping is the final stage of one-way bearings life and I am replacing them for my own peace of mind. If that bearing would fell apart at high engine RPM, jammed the crankshaft and destroyed connecting rod, I would be very, very angry lol

[@hybrid32494]

@@FargothPL so far I have been waiting for the moment the bearing begins to slip again, but nothing is wrong anymore. Im surprised myself. I used a basic Dremel sanding bit and just went around the starter shaft. Ofcours on bearing that sit inside the engine like on many big block motors, I would not attempt this. But on the basic HPI g3.0 engine its very easy, also easy on any traxxas motor.

[@GregFromSI]

I was always interested to see how those transmissions worked. Are the schematics for this car online anywhere?

[@hybrid32494]

check this link out, super detailed. Yes there is a way to adjust these, usually the clutches are stuck and need to be worked some for it to shift. www.ofna.com/pdf/10-Shoe-2speed-hpi&z10.pdf Goal is to get this to shift soon.

[@dustinplee5067]

Please please please help my nitro stampede will not make any noise at all when I put the easy star in I soldered the switch box to the battery pack battery pack is lighting up and I turn the switch on my glow plug is fine

[@jayp9299]

I have issue with my team assisted mgt with a axial .32. The fuel mixture is all over the place. I’m thinking maybe vacuum leak?

[@jakehart9891]

Just bought a red at monsoon yesterday. Brand new. Broke in as per manual. Went to run today. Runs for a sec at idle then dies. Then is hard to start again. Got fuel. Got air. Got pressure. Glow plug is bright. Any ideas? Would to rich of a lsn cause this? I opened the throttle a little on the trim and it idled up a little. Then slowly died out.

[@colintheqt]

Does anyone know why my nitro won’t start and spits fuel out of the exhaust, the glow plug and igniter works and it gets fuel but won’t start

[@caseymilligan3821]

It’s running to rich turn the high screw clockwise a little bit then try to start it again

[@americawalk1154]

i bought a used Ofna lx with k4.6 engine. however, it cant even run on grass at the park it got stuck, like has no power to push thru grass. it runs on pave street just fine. i don't know whats wrong with it lacked power.

[@ranolphwhitehead1052]

I just bought my first nitro rc have you done a video on what fuel to put in them

[@hybrid32494]

hey buddy! congrats on getting your first nitro my dude! These models run on nitro fuel, you could get the fuel online anywhere at this point . I recommend about a 20% nitro and 10-12% oil content. Look up bones brew motorsports, they sell terrific nitro fuels.

[@ranolphwhitehead1052]

@@hybrid32494 Ok thanks

[@cross7776]

Check out MinNitro ripping up the snow... He run his stuff in the snow I never could get mine to run in the cold

[@hybrid32494]

hey man, Ive ran many nitros in snow, they run pretty well in the cold because the air is denser and they don't overheat as much. You def need a better tune, that must be the issue. What happens to your's, it stays too cool and spits out alot of oil?

[@amlnss9344]

Hey mate any idea why my 3.3 Traxxas is running really rich uses so much fuel and only runs with the glow igniter on ive tried tuning it was good one day now it's like this please help

[@hybrid32494]

Hey buddy. It sounds like you tuned it to run very rich, as you can already tell. Did you mess with the low speed needle on the side of the carb? It should be flush with the carb body as it says on every single traxxas manual. At this point keep running it and adjust your high speed needle by 1/4 turn untill you see its not getting as much fuel and not cutting out. Let me kno where you are at dude, thanks for watching!!

[@Greenbear39]

Possibly the glo plugs going bad replace it.

[@joshblondell3332]

clean and oil th crap out of the 2 speed as long as the springs are ok it will shift just keep trying to a just the hex screw until it in gauges

[@wdavie27]

Hiya buddy can you tell me what's the best way to clean out a nitro engine that's been sitting with old fuel in it for 3-4 years iv had a nitro helicopter but iv never had it started but the old fuel is like a thick gel I know I'll have to strip the carb down and clean it out should I need to take the barrel & piston off aswell or can I put wd40 or petrol down the barrel and turn it over without the glo plug in :-)

[@hybrid32494]

hey man!! Did you see my last few vids on the restoration of my Lost XXX-nt, that engine was fully seized and gummed up from the nitro fuel. I just washed it with alcohol and soaked in WD-40 and it runs perfect now. My front main bearings were the biggest issue. You gotta tear down the engine from the back, don't remove the sleeve or piston. Id just remove the carb and spray nitro cleaner or carb cleaner down the high speed needle valve and watch it come out. Should be fine. The whole time you are doing anything you should keep the glow plug out btw.

[@RCWORLD4x4MODEL]

👍👍👍

[@93jake81]

Hey do you know why I keep on breaking clutch springs??? After the first clutch spring break I've used the aluminum upgraded clutch shoes but they keep on breaking and they're not that old. Do you have any clue why?

[@hybrid32494]

Hey dude, are you just getting new clutch shoes and re-using the same spring? or are you getting the new spring too? Are you sure your clutch is installed correctly and isn't crooked at all? You might need a better heavy duty clutch setup. Which RC and which clutch are you using?

[@93jake81]

@@hybrid32494 the RC it's on is the rally monster. The spring itself breaks and the clutch shoes are perfectly fine. So I buy the clutch shoes and spring together and install it. I might have to check if it's crooked and maybe see how much a heavy duty clutch setup is. Thanks for suggesting some things

[@hybrid32494]

IF possible you should get the HPI racing clutch, its about 16 bucks normally. I think this one would work for yours, make sure to compare the pictures of this one and your actually one. HPI also made an adjustable racing clutch with different settings, not sure if it's discontinued now. www.ebay.com/itm/HPI-Racing-Clutch-Shoe-Spring-Set-Firestorm-HPI86869/273586400266?hash=item3fb3052c0a:g:XsMAAOSwm51cAJOC:rk:35:pf:0

[@93jake81]

@@hybrid32494 ok thanks I will check it out

[@amiralikhan061]

Hi I have few questions 1.My car was running fine but all of the sudden it slow down like has nearly no power even after giving full throtle it just drive very slow. Smoke and sound of the engine comes as normal. 2. Why I need lot of strokes to start engine. 3. Why engine throwing alot of fuel. 4. Why engine switch of when turn electric power on. I will be waiting for answer

[@gotnitro4329]

Do I have to lock the diffs to make my nitro slide like the drifter in the video

[@hybrid32494]

hey buddy! That HPI nitro 3 Drift does not have locked diffs. It's just a regular 4WD car with plastic tires. You can drift any nitro or electric like that with just basic Plastic tires. Get a set, you will see what I'm talking about..

[@newscooler12316]

hello I'm having a problem with my engine it won't start on my rc truck but when i take it off and start it while im holding it in my hands it starts right up!? my fuel tank and lines are all good so what else can cause this!? please help

[@hybrid32494]

Hello, it sounds like your clutch is broken and/or the spring is loose. Do the wheels spin pretty quick while the car is idling when you lift it off the ground? That is a good sign that your clutch is engaged. Remove the motor and the clutch bell and examine the clutch and spring. Let me know.

[@newscooler12316]

@@hybrid32494 no its not the clutch it spins free. I think it might be the exhaust maybe cuz it wants to start with it off (its a custom exhaust)? but my other engine i was using (same size engine) ran with the same exhaust fine so idk.

[@hybrid32494]

hey, it can't be the exhaust, If there was no backpressure it would just not start at all, it's not linked to the wheels in any way. I still think you have a clutch spring issue. It may look normal but after a few years they just don't hold well anymore. Is there any way you could try the clutch from your other engine to troubleshoot and eliminate this as the problem??

[@levanamallory2651]

My son is wondering why his car is stalling when he accelerates faster? It seems fine at slower speeds but if he tries to move a little quicker, it dies. Any suggestions?

[@hybrid32494]

hello! It's almost always a tuning problem. You really have not told me enough to be 100% helpful in my comment . But I will still give you some good advice on what to try. If you notice the engine is extremely rich and has lots of smoke and oil coming from the pipe, you need to lean out the High Speed Needle (means turn it clockwise like 1/4 turn then test out again). You need to do some trial and error tuning on the High Speed needle and see what is making it run better, then let me know. We can go from there. Sounds like it's bogging down because there is too much fuel and oil in the system.

[@nomusicrc]

This is me leaving a comment so you know I watched this but I have already watched it because it already has a blue thumbs up I will give you two more thumbs up LOL

[@hybrid32494]

Lol!! Great!! This is me leaving u a heart on the comment!! 🤣🤣🤣👍🏻👍🏻😂🤜🏻🤜🏻

[@Southwest.rc.bashers]

Hi could you help me the other day I was going for some high speed runs and ever since after that my car cuts

[@hybrid32494]

hey bro! You need to give me some more info, do you mean after more high RPM runs it shuts off. Check your glow plug and also make sure there are no air leaks anywhere, let me know...

[@Southwest.rc.bashers]

@@hybrid32494 it starts fine I put a new gasket on there as well it starts fine it’s only when I put the power down it cuts out I done the High speed needle and the low speed and the low speed needle it was running fine but just cuts out when you go fast,

[@Southwest.rc.bashers]

Do you know why it cuts out when I Rev near top speed

[@nitrogas5719]

Hey man I need some help with my engine, will my engine be affected by running short fuel tubing? And for the compression I can turn my engine over with my finger, does that mean I have a dead engine? The engine gets harder to spin if I have fuel in the cylinder, if it’s just air it still has resistance but isn’t that hard to turn compared to my new novarossi. Thanks man

[@hybrid32494]

hey my dude! Yes, the length of your fuel tubing is pretty important, try for 6-8 inches of fuel tubing if possible. Most new traxxas have around a foot of it to begin with, btw. Also you don't want the back pressure tubing going to the pipe to be more than about half the fuel tubing itself. BTW, your engine sounds pretty normal, you should be able to spin the engine over your finger with some tension ofcourse. And yes, it will get tougher to spin over with fuel in the engine, thats normal. Basically just keep running it until you notice it starts to overheat or hold a poor tune, that will be the best obvious sign of when to replace or rebuild, you know!!

[@nitrogas5719]

hybrid32494 cool, thanks for the speedy reply, is it normal that the engine is a lot easier to turn though when warm? Engine still has a good amount of bottom end punch

[@christopherbaunach4137]

I have an rc nitro car from around 2005 and I went to use it probably 2013 and it would always run good but one day I went to start it and the motor just redlined up by it's self and the steering wasn't really responsive it would do a twitch like motion I was thinking it might be the crystals. I'd like to get my ex car running probably need a new glow plug and charger .. also need to identify what model rc car even is.

[@hybrid32494]

hey man! thanks for watching. Glad to see you getting back to your nitros my dude. Anyway, I highly recommend you get a new 2.4 GHZ radio. I used a 35 dollar Flysky FS-gt3b model (look it up on my channel, you will see me drive almost every of my rcs with it). ITs got 10 model memory and cheap receivers with great range and failsafe built in. Chances are your radio gear is bad and it was applying throttle on it's own. Watch my newer vids I have alot on first starting and maintenance on older nitros. Hit me back for any help.

[@rattlehead7281]

Is that nitro drift rc rwd? What make and model is it

[@hybrid32494]

hey buddy! That is an HPI nitro Drift. It's a discontinued model at this point. Ive got some other videos on it, check them out. It's a 4WD shaft driven touring car, with a very ideal 50/50 weight distribution. IT actually drifts quite well, but the whole nitro drift class did not take off, unfortunately. There were some conversion kits you could buy from HPI to make a Nitro RS4-3 into this model as well. But this one, was sold as you see it.

[@nitro2936]

My hpi won't start n it backfires sometimes please help n thank you

[@hybrid32494]

hey bro, I wrote you back on another video comment you left.

[@adammccardle8741]

Did this car come in two speed?? I think I have a two speed

[@hybrid32494]

hey buddy! Whats up! The original nitro rs4 had an optional 2-speed, therefore somebody must have put that in on yours. Lets make nitro great again!!!.

[@limbuckl]

1:21 if you want to skip chitchat.

[@adammccardle8741]

18 RC Car Nitro Engine SH 18 Nitro Engine 36000 RPM 2.74CC with Pull Starter Recoil Start for 1/10 HSP HPI Nitro Buggy Truggy Truck Drift Car

[@adammccardle8741]

Can I get better shocks ??

[@hybrid32494]

hey dude, I would say you just need to rebuild and refresh the shocks you currently have. The stock HPI shocks are quite good, just put some 50-70 weight shock oil in there and you will be set. Mostly all aftermarket chins aluminum shocks are terrible btw.

[@jasonleviner7850]

That square head os engine was the worst rc engine I ever had. It would never hold a tune. I bought it new in the summer 97. So old it winter 98. I honestly say I could never get it running right.

[@hybrid32494]

hey man!! that's weird, what engine did you replace it with and did it run fine after? I have two of these square head OS CV motors, both run well. After replacing the original carb with an HPI style one it's perfect. You might have had a clogged carb or a vacuum leak possibly. What happened after?

[@jasonleviner7850]

hybrid32494 I replaced it with an old os cz .12 I had. That was a great engine. It came with my team associate rcgt team version. That truck was bullet proof too.

[@hybrid32494]

those were great rcs the RC10GT, I would like to find a nice one on ebay one of these days. Never had the OS CZ, was your's pullstart? It seems all my older OS pullstart engines are slightly problematic with the pullstart assembly binding when it's screwed in tightly.

[@RCfanAddict]

I have a pipe i can send you its exactly the same just purple.

[@hybrid32494]

hey man!! that's be terrific, I could cover the shipping no problem.

[@RCfanAddict]

Link a address or P.O. Box

[@hybrid32494]

hey man I don't know how to directly message you on here, do you have instagram, I can send you my address there.

[@hybrid32494]

hey man!! I wanted to let ya know the pipe you sent me it terrific, the HPI runs much better now. Did you see the runs at the end of one of my newer vids with it?

[@1VIPWRX]

Makes me want to resurrect my nitro rs4

[@hybrid32494]

hey bro! DO IT!! The nitro RS4 will never die. I will own one forever and will request to be buried with it in my will, I'm not joking. I recently got an old super nitro, cant wait to run that one too. NitroGang!!!

[@1VIPWRX]

hybrid32494 i still have the nova rossi motor in it lol .

[@nitrogas5719]

D the novarossi cx12?

[@bradleypendleton202]

First