Infinity Owner STUMPED for 2 MONTHS?! (G35 V6 MISFIRE...No-Crank...No-Codes?!)

[@retrowonder1097]

Hello, Ivan. Thanks for uploading the video. I thought you were not going to share this one. FYI, I found out later after you did the diagnostics that my son was the one who left that ground wire loose after he did some cleaning in that area. Unfortunately, that simple mistake cost me almost $2K, including your fees. When he was replacing the new set of plugs, he installed 5 of 6 and left out one. Believe me, that was a lot of noise when we started it. The G has been working great since the issue was resolved. Thanks for your great diagnostic skills, Ivan.

[@Mr2004MCSS]

That is definitely unfortunate. Hopefully it will be a learning experience for your son on how important grounds can be.

[@Bryan-Hensley]

@@retrowonder1097 what caused it to start burning oil so early on?

[@Nismokh2]

The engine was replaced close to 10 years ago, small misinformation.. The car was fine for two months when we first got it and the ground cable was totally user error combined with crappy roads that slowly loosened it even more overtime.. Thank you for the help and the awesome video!!

[@PineHollowAutoDiagnostics]

@@Nismokh2 thank you for the clarifications! Glad I could help! 😁👍 What do you mean by "ground cable was user error"? 🤔

[@Nismokh2]

@ I had messed with that ground when I first got the car.. Cleaning connections and tackling some minor surface rust throughout the bay, I use to daily the car during the summer and my commute was far from smooth sailing..

[@wolveric0]

huge respect for commenting and clarifying, what i find weird is the fact that the ECU didn't have an isolation layer to avoid this kind of electrical damage, hitachi is a great electronics company but it seems their automotive modules are not as good as the Delphi, Mitsubishi or Continental ones, the nissan versa and sentra also uses hitachi modules made in mexico and have this same issues were the ECU or BCM can get easily damage, i think their is s pattern there.

[@alexanderzubar9593]

The best electronic isolation components are usually rated to 2500 volts. ignition coils generate over 40,000 volts plus the fact that the spark is a very high frequency so it can typically cross anything with any capacitance. Hard to isolate lightning.

[@alexanderzubar9593]

@alexanderzubar9593 20 minutes ago Real BUMMER! Especially that it happened when you were trying to “cherry out” that nice car. Thanks for clearing it up.

[@Diagnosedan]

Great find Ivan, unfortunate for the owner but at least your spot on diagnosis kept the cost to a minimum and prevented replacing parts the car didnt need. Welll done💪

[@rmsdiagnostics]

You two have got to be the best diag guys in KZbin, much respect doing it so well

[@rmsdiagnostics]

I’ve just done a video on a bmw faulty engine earth strap, the viewers didn’t believe how lucky he was to not have fried anything. Great video again mate

[@JohnDoesGarage]

BMWs don't tolerate loose grounds well at all.

[@a.h.h9647]

nice channel after BMW post subscribed, you and Ivan and other great people who spent time to post their knowledge are admirable .

[@dharley189]

Original problem was oil burning. Engine swap led to missed ground bolt left loose. Loose ground led to coils and PCM burn out. Several human error factors all contributed. The engine swap tech needs to form good habits or his career will be over. I learned and formed those habits in the 70’s from making my own mistakes. Nice video.

[@mph5896]

Yeah, bad habits can cause a disaster. I used to preassemble nuts/bolts, come back and tighten every thing up. Sounds like a great idea until one gets left loose.

[@JamesAgans]

The simple fact that a loose ground can lead to a PCM and coil burnout tells me to never even think about buying one of these vehicles. Bad Engineering at its worst.

[@tschuuuls486]

​@@mph5896 leaving a ground loose ist one thing, but forgetting to tighten a subframe or suspension arm bolt gets you in dicey situations really fast.

[@tschuuuls486]

​@@JamesAgansif you look at the available scan data and the quality of codes that Nissans usually set, they are just a pain.

[@cullenmiller8170]

I don’t know if you saw the comment from the owner, but the engine work was done 10 years ago.

[@kennethnichols7263]

Had a ford fusion that had shorted ignition coils that fried the drivers in the computer. Sent it off to a place on line that replaced the drivers and sent it back. They required you replace all the ignition coils with OEM before they would honor their guarantee. No reprogramming necessary and cheaper than a used ECM. Was very pleased. The company was Circuit Board Medics out of Greenville SC. Would highly recommend them!

[@Bryan-Hensley]

@@kennethnichols7263 I think I could do that if I can cross reference the components. Most of the time a manufacturer for vehicle parts will use their own numbers so they can't be found.

[@stevewhite3424]

One of the biggest lessons in this episode was that given as good as Ivan is he still goes to continuing education classes to get even better. many mechanics that I personally, I'm aware of will pass up those types of seminars because of a myriad of excuses like I don't have time. The marine engine companies are big on classes on troubleshooting and maintaining those super expensive outboards. Would you be surprised how many mechanics simply don't bother? Way to go Ivan continue.Education is a beautiful thing!! 😊😊

[@wayneessar7489]

In agriculture if you attend and complete certain continuing education events each year you earn points to allow you to be recertified for chemical application without retesting. Very popular because they are timed for our off season.

[@brianw8963]

@@stevewhite3424 I have 2 good reasons/ excuses. 1- I’m too old, don’t like to travel, and hate anything that resembles a large city. And 2 - I’ll just absorb what I can when Ivan shares it with us. 😅👍👍

[@Kro_man_tx]

It seems like grounding problems have come up a lot lately, loose or crusty grounds. I have an old but very low mile Chevy Tracker that i am "restoring ". It occasionally has a rough idle, makes me want to chase, clean and tighten all the ground locations for the engine and ecu. May not be the cause, but it couldn't hurt!

[@serge4856]

Makes me want to add some extra ground wires from the engine block to body. Some cars come with those mesh ground wires that rust out.

[@major__kong]

Tin-plated copper braid. The primary reason it's used is it's super flexible so it isn't going to fatigue when connecting two components that will have significant relative movement like between the engine block and chassis. It also gets used as bonding straps and grounds for radio frequency (AC) applications because the wide flat strap has lower impedance than a round stranded wire. At DC there's no difference.

[@sheerwillsurvival2064]

@@major__kong👊🏻👍🏻

[@Bryan-Hensley]

@@serge4856 I agree, if you live in the salt belt, the aluminum ones will corrode so bad they are just brittle flakes.

[@greggc8088]

After dealing with Ford's infamous ign coil driver ckt issue, I kind of lean to a new set of ign coils every time there's an ECM driver issue. Especially if someone else has had hands on it previously. Glad you got it fixed for him. Those are awesome running engines.

[@jeffbaldwin9842]

Good catch on the bad ground right off the bat. People don't realize how involved an engine swap can be and how easy it is to create a problem in the process, even when the person doing the work has the best intentions. That's why I avoid cars that have had major work done and put high premium on original low mile cars.

[@NeoAndersonReloaded]

I had this issue with my 03’ g35 had 215k miles. I was having misfires and the coils were arching to the block. I kept replacing them not understanding the issue. Finally i sold the car. But it had to be a loose ground it all makes sense now. Oh well

[@tuberNunya]

Should the dealer eat the costs considering that loose ground was from an engine swap?

[@edjeep]

NO, owner went over the warranty period of 1 month, lol

[@rickchowsr2532]

@@edjeepcorrect well past the warranty period aside form the owner replacing things did not help with warranty.

[@timbo19751975]

Be no way the dealer would accept responsibility for that.

[@kinglangren]

Not a chance

[@ralphjohnson4041]

Great - another spoiler alert right at the top.

[@wyattoneable]

Thanks for the follow up. That was interesting for us, expensive for the owner.

[@brianw8963]

Only a 1 month warranty on an engine replacement. With the evidence so evident , the stealership still should have stepped up to the plate. I’ll reserve comment on my thoughts on that subject so as not to hurt screw tubes feelings and get reprimanded again. They might think I was referring to some of their friends, which are also thieves, con artists etc. 🤬. I feel better now. Nice work Ivan. 👍👍🇺🇸

[@bobcoats2708]

The owner of the car commented here and clarified that the engine swap was ten years. The problem was actually due to some work the owner did himself.

[@brianw8963]

@ Well thank You, I didn’t see that, thought it was a somewhat recent event. 👍👍🇺🇸

[@Stoney3K]

The intermittent misfires make total sense because the bad ground means those coils got completely fried one by one due to the back EMF coming from the ignition coils, blowing out the transistors. Once those went out, the back EMF could pass through to the output segment on the ECM.

[@Bryan-Hensley]

The computer was grounded to the battery, the coils were grounded to the block. All that ground amperage, due to the loose block ground, went through the coils and computer. I bet you can go into the computer and solder the burnt strips and the computer will work again, I've done it.

[@CedroCron]

The coils from that era were a problem. We also saw a couple corroded grounds in that same spot that cooked the engine computer. It's really just poor engineering on Nissan's part. Good diagnosis Ivan!

[@stevestadnik9206]

Old Maximas had a TSB if you had a P1320 and misfire, don't bother trying to diagnose which bad coil. Change them all with updated design.

[@jdesaavedra0432]

Engine swap, then missing block ground. I've bought cars with this issue. Feedback can burn things out. Mine cooked the plug wires and created a no shutoff condition.

[@JoseSilveira-newhandleforYT]

Great diagnostic, Ivan! Repair was both simple and easy - tighten a loose ground bolt! The problem was the number of items cooked by the loose ground. Numerous such cases, after major engine compartment work, that hold for some time after the work was done, and only then they start to create problems, misdirecting from the real cause.

[@petergondolier4088]

Perfect example of why the first thing to do when you get a new/used car is find all accessible grounds. Remove, clean, lube with NO=OX-ID, and securely reinstall. You've now eliminated 99% of possible grounding issues. You and the car will be much happier!

[@JamesAgans]

You should also wire wheel the terminal ends and the attachment point, replace the bolts with stainless steel and serated SS lock washers, and coat everything with nickel Anti Seize. Deoxit does not last long. I have been watching Ivan, Eric O, and others for years, and the number of times that bad grounds end up being the problem is remarkable. Especially on Chrysler products. They have had ground problems forever. You would think that they would learn after so many years.

[@edwinlomonacofoolsend]

One thing I don't like about these Nissans is no misfire monitor on scantools. So I always do an rc test first. Then use the coils fuse to watch the amp ramps of the coils. In terms of misfires this is how I try to at least isolate which cylinder is misfiring. Also since the short block was replaced I'd check the ground wire attached at the upper part of the timing cover. I've seen it so many times. Anyway haven't even watched the first 3 minutes. So let's see what we got.

[@stealthg35infiniti94]

I srill love my 05 G35 6Sp MT Coupe. I have 115K miles with original coils. A good practice is to remove and clean those half dozen grounds every 10 years or so.I spray them with Deoxit and they remain crusty free.

[@Lith808]

I had my original coils last 17+ years and over 200k miles. They were never replaced actually. I owned the car for 14 years. Unfortunately the car was rear ended and was written off. But the car never had any issues with the grounds or any electronics or modules. I never replaced any sensors either. If you are looking after the car, it should really last a long time. Way past than most people would have a need for it :)

[@craiggoodwin9704]

Ivan, great video. Right after I finish this comment I'm going out to make sure all my ground wires are secure! Well, not really. I think I'll stay inside today and watch more of your videos. Thanks for Sharing! 🙃🙂

[@MsFireboy2]

Power and grounds voltage spikes can take out PCM’s and other electronic components. Thanks for posting.

[@Bryan-Hensley]

All that ground amperage went through the computer.

[@lvsqcsl]

You know, Ivan, if there are this many bad grounds that YOU have come across, the just think of the many that don't get diagnosed correctly. I immediately knew where you were going because the engine had been changed and these ground straps don't get reconnected; apparently this one did, but, use loosened it. I'll bet when you replaced the transmission in Mr. Rogue, EVERYTHING got checked and double-checked. I guess on that Super Saturday, you got to sit through class with a legend. GREAT VIDEO!

[@ehsnils]

Considering that the most current the battery sees is when cranking I wonder why the negative don't go to the engine block. The most obvious answer is probably because it's more expensive - takes more time when building and uses more copper. A bad ground cable like that could also cause ground current going the wrong way burning unexpected items.

[@Bryan-Hensley]

You got it, I'd say the ground path went through the coils. I'm only guessing because I don't know the wiring of these cars.

[@stevestadnik9206]

In the old pre ECM days, bad ground current went through shifter cables not $1000 ecms.

[@ehsnils]

@@stevestadnik9206 If you had shifter cables. My first car had the stick straight into the gearbox, so with no ground strap it wouldn't have done anything. No crank, no charge indicator lamp and no oil pressure lamp. (Old 1960's Volvo)

[@Bryan-Hensley]

@@stevestadnik9206 I used to have a 2,400 watt stereo, if I had the slightest ground issues, it would destroy the throttle cable.

[@williamwhite9767]

I bought a new 2013 Infiniti Journey EX37, 325hp 3.7L V6, 7 speed auto, rear wheel drive for my wife. She has only put 60k miles on it and it has stayed in the garage every night. I've changed the oil every 6 months so it was changed at less than 3k miles many times. It's always full of oil when I change it. 0 dollars have been spent on repairs so far. It's a hot rod and she loves it. She has said many times she never plans to trade it.

[@pootthatbak2578]

Just turned this on, havent watched it all yet..thanks for posting this. Im glad you keep giving us videos❤

[@blueskiesmobileauto4253]

I would hope the mechanic who leaves grounds loose while changing parts will someday run into the importance of electrical connections and learn from their mistakes! Awesome case studies Ivan!

[@DANNYN224]

This was a crazy video and diagnosis different factors can change the way you troubleshoot an issue

[@kerrylewis2581]

Nice car. I hope the owner has better luck with the G35 moving forward

[@volvo09]

Yeah, those are usually trashed. Everyone mods them and races them around.

[@civicowner07]

Just paused to have a guess why its a crank no start with engine earth restored. Maybe no earth blew all the coils? Although you'd expect dtcs for that now I think about it

[@baxrok2.]

Beautiful step by step crank no start diagnosis. Thanks Ivan!

[@Garth2011]

I recall not long ago the Ford F series trucks had poor grounds, they had used that cheap exposed woven flat wire, which slowly corroded enough that the engine electronics were pulling their ground through the transmission and damaged trans parts ! Very costly to fix that cluster. Transmission shop Bulletins were issued telling folks to add a custom ground cable to the frame to engine and trans to prevent this. Next thing you know, you saw Ford trucks with multiple ground cables !

[@stevenakn1]

Ivan putting the hot back in the sauce 🔥

[@mikechiodetti4482]

GROUNDS! I saw the main ground location on that engine. My 06 Frontier 4.0L main ground is at the same position. Remove that bolt holding the ground tight, and check for discoloration. Mine had that black discoloration. I checked for voltage drop while cranking between that ground position and the starter mounting point, no voltage drop. I don't like seeing the main ground that far away from the starter. The vehicle has a current sensing device mounted on the ground cable near the battery ground. It still runs great and starts right up. I've thought about running a ground cable from the main engine ground point to the starter, but I don't know if that would mess with the current sensing device. I'm thinking about trying that with a jumper cable and monitor the current through the sensor with a scope.

[@Bryan-Hensley]

Yeah, if the computer has it's own ground and is grounded to the engine too (via sensor grounds or through the coils), all that amperage would have tried to go through the computer. I bet you can go inside and solder some burnt strips on the board and it might work. I've done it.

[@SomeRandomHuman717]

The Rev Up engines were NOTORIOUS for excessive oil consumption. As much as a quart per 500 miles. IIRC when these were warrantied by the factory they would replace if consumption was worse than 1,000 mi/qt.

[@mikefoehr235]

What was the cause of excessive oil consumption? Bad oil rings on the pistons perhaps?

[@volvo09]

Do they actually call it a "rev up" engine, or is that a nickname? I always thought these cars were sold with a single engine? But I'm not a Nissan guy.

[@ChrisWilliams-pu8pj]

Great video Ivan. Thank you!

[@Hybriddiag]

I had same issue on nissan sylphie my colleague forgot to put ground wire from battery to gearbox 😢as turned on and cranked 😢it damaged ecu luckily had one on shelf..block grounds are really important...cheers ivan

[@cullenmiller8170]

Nice video and diagnosis. Small issue with an expensive outcome.

[@RussellBooth1977]

The Nissans must be different to the Holdens where the key is programmed to the body control module rather than the PCM. If the PCM ever needs replacing in my Holden VY Commodore however, it still needs to be linked to the BCM (body control module). I know with my other Commodore, the VL Commodore which has the twin cam Nissan RB30 (RB30DE engine) fitted I bought the Nissan RB25DE engine package which was from a 1995 model Nissan R33 Skyline GTS & I used the RB25; DOHC cylinder head, pistons, high volume oil pump, wiring loom & ECU as well as the Nissan RB30E engine block, crankshaft & connecting rods to build the Nissan RB30E back in 2003 then we bolted it in on December 31 2003 then we had it running on January 1 2004. The problem is that the engine wouldn't rev past 2000 RPMs &; the spark plug electrodes were all black, the ECU was setting code 13 for the mass airflow sensor. I Checked the continuity of the ECU wiring harness because it was a cut & splice job in the Holden VL Commodore (similar to the Keeping it Reet one on here) & that measured o.k. So I went to the import wreckers & tried another mass airflow sensor to rule out a bad one, I tried another green label Nissan RB20DET mass airflow sensor out of a Nissan R32 Skyline GTS-T which was the same as the R33 Skyline GTS RB25DE part. That didn't work so they had a couple of R32' Skyline GTS-T RB20DET ECUs in stock, I tried one which was chipped for the HKS cammed RB20DET engine, the engine blew black smoke & it stalled when I released the clutch so that was a no go. I tried a stock Nissan R32' Skyline GTS-T RB20DET ECU & the engine ran much better & it could rev past 2000 RPMs, I asked if I could borrow it after I ordered the stock Nissan R33 Skyline GTS RB25DE ECU for $300 AUD (ouch) because there was no warranty after 1 year & I sacrificed the Nissan RB25DE engine just to build a 3 litre version. It idled too high using the R33 Skyline GTS-T ECU because the R33 Skyline GTS used a throttle position sensor rather than a throttle position switch which the Nissan R32 Skyline GTS-T used. It was only that the R33 Skyline GTS RB25DE engine used variable valve timing that I needed the non programmable Nissan R33 Skyline GTS ECU, if it was the Nissan R32 version of the RB25DE engine which didn't have variable valve timing then I could've got away with using the Nissan RB20DET ECU which can also be chipped because you can remove the PROM without destroying the ECU unlike the R33 Skyline ECUs, people have destroyed them when they've tried to unsolder the PROM chip from the circuit board. So for the R33 Skyline setup the only options are either the Apexi power FC ECU which is programmable as well as being plug and play or an aftermarket ECU such as a Haltec programmable ECU which is very compatible with the Nissan RB series 6 cylinder engines !

[@larryberry2436]

When I worked for an import dealer I was told for intermittent problems, drive it. If the problem isn’t there, park it, put on the ticket “could not recreate customer complaint.” If you make any attempt at repairs, you now own the vehicle. All future repairs are on you. I’m sure many issues were noticed on test drives but ignored. BTW, if you put on the ticket “vehicle operating as designed,” a lawyer will say, “ so your company makes vehicles that do (insert issue here).” Ask me how I know 😊.

[@kevin9c1]

As soon as you found that loose ground I thought, that may well have fried something with current going all kinds wrong ways.

[@Bryan-Hensley]

It's a wonder it didn't fry some small ground wires in the wiring harness.

[@rodneymiddleton9624]

Awesome job Ivan!!!!

[@DonDegidio]

Hi Ivan, Wow, another loose ground bolt. Great diagnosis. Wonder if the dealer will stand behind their block change and refund some of what was spent to get the car running again.

[@SuperDave71176k]

Was the loose ground bolt part of the engine swap?Did the dealer cover the new computer part?

[@glenharper3136]

Thanks for the video. We miss Keith.

[@joecoyne5660]

My son had the same make and model, it died on him as he pulled into a parking spot. Had it towed to a local shop, they determined the ECU was bad, ordered anyother ECU from Ebay did not fixed the problem so they charged him $500 and gave up. Had the car towed to dealer 100 miles away. Dealer found loose ground, after fixing that problem they determined bad ECU and 6 coils. $4000 later the car was finially running. He ended up selling the car soon after that.

[@JAIVS26]

nice and simple diag. my all time favorite trainer is Adam Robertson.

[@MarzNet256]

Nice! It seems like replaced engines are often accompanied by loose Engine/Chassis ground bolts. That bad ground did a number on the coils as well.

[@nv1493]

Warranty is warranty in my book. This video is very clear on condition and later impacts. Whether or not the dealer will honor the warranty is between the owner and the dealer. I've successfully filed and won in small claims court related to warranty issues that weren't high enough to interest a lawyer. No lawyer needed in small claims. Just get your info in order. It was well worth it.

[@johnz8210]

The car owner left that ground cable bolt loose. He'll have to take up the warranty issue with himself.

[@tomtke7351]

Ground connections always seem subservient to battery+ and so less glamorous. But remember that, in reality, the battery- post is the Source of electrons. No electrons = no electricity.

[@haroldhawkins9370]

Nice video Ivan.

[@rodvan-zeller6360]

Great video. I think the oil burning issue on those cars was a poorly designed PCV system, a catch can may help. By the way, I think that is a Renault designed engine.

[@shanestrains2849]

So the loose ground cooked the ECM driver, original coils and the backup coils! Holy smokes! Literally! 😁

[@volchip]

Yup V= L di/dt ... the ECM was toast since the ignition coil energy made it into the ECM. If you curve traced the ECM's input they should look like a forward biased ESD diode.

[@SHSPVR]

Wait a minute you mean to tell me they had forgotten to tighten up the body chassis ground and it wasn't the actual part of the main ground going to the engine block me thinking this should have had two grounds leads from battery cable one going to the body and one gone to the engine itself. Oh when you were working on the coil an injector you had your hand next to a ground wire perhaps that's is the actual body ground in that other wire that you tightened up is the actual main ground which should be connected directly to the engine block.

[@agostinodibella9939]

That's a shame this problem was caused by the dealer while swapping the engine. I once picked up a car that was just repaired and went to a gas station. When I went to leave and tried to start the car,there was a short noise and it wouldn't crank. I found the negative battery cable was not tightened. I went right back there and had them take care of it.

[@farmermiyagi1338]

"GNARLY intermittent" problems Ivan. Can't forget the Gnarly part. XD Got to be well grounded, whether it's your battery or your personal life. ;)

[@brianw8963]

Reminds me of a neighbor years ago that pulled all the plug wires to check for spark on his wife’s almost new Gran Prix. Cooked the coils in short time. That always stuck in my head. And I think he had some other “ grounding “issues also. That was his second wife that he had , that he no longer does. 🤭

[@wilmarbarrick3194]

And people laugh at me when I volt drop test my battery/starter/charging system 2 -3 times per year as part of routine maintenance....

[@dhaggy1980]

I said "Cooked Something" at the same time. Having a bad return to energy is really bad. LED fixtures if they are on and the neutral goes away the drivers get cooked as well.

[@ghostlanz]

I wonder if this is why I had a random no crank no start after the car died on me on the freeway one day during a snowstorm. Had it towed home and the next day I pulled codes for camshaft sensors, but that didn’t change anything The codes would bounce around some days it was wheel speed sensor, another it’d be ecu not communication, sometimes o2 related, we couldn’t get it to manually crank beyond maybe a quarter of a turn and that was only after taking the ignition coils out. Then we hooked it up to another car jumping the battery revving for like a minute straight, and then it finally turned over with key for half a second but wouldn’t again, and trying to manually crank it any further after that broke the breaker bar. I finally gave in to everyone saying the engine was locked but I had so many doubts, this video makes me think I’ve got a spare VQ now instead of a paperweight 😂 2006 g35 sedan

[@billseay6399]

Hey thanks again. The laptop your using which one do you use.what about the relay

[@miket1322]

I remember in an SMA video where Eric said that his dad would give him absolute shit if after installing a nut or bolt he did not tighten it down immediately!

[@steveharrison1315]

Its the only problem with modern cars loosing a ground then people try to jump it lin & can take the hit

[@kinglangren]

I got to admit I’ve left a ground loose a couple of times. Figured it out immediately both times.

[@WillKlaver]

.. auto mechanics class once we did a rebuild on a Toyota, someone forgot the ground, started the engine .. the engine grounded through the Throttle Cable & Stuck it Open at whatever position it happened to Be in .. 🙄👨‍🔧🧰

[@Bryan-Hensley]

I've seen that happen more than once..

[@sambitar5194]

GENIOUS IVAN, YOU TOOK CARE OF THE ISSUE MADE BY THE MECHANIC WHO DOES NOT VERIFY HIS GROUNDS. THE POOR OWNER HAD TO PAY ALL THAT MONEY. ...........DISASTER!

[@HueToobBlows]

What people don't understand is that a 12 volt alternator can reach 80 volts output if the alternator is putting out but is not connected to anything. It's crazy how much you don't know in this world.

[@kevin9c1]

On the oil consumption, I wonder if a couple oil changes with Valvoline Restore & Protect is all it needed. It's not like it was "worn out" at such low mileage.

[@Bryan-Hensley]

I don't know about these cars, but Toyota oil burning issues was because of a skinny oil ring which had smaller ring drain holes which became clogged. That's one car that needs oil changed every 3,000 miles.

[@brianw8963]

More than likely from the stupid low tensile rings, which the Valvoline would not have helped. Hear a lot of good results from that stuff though.

[@kevin9c1]

@@brianw8963 Assuming the engine didn't burn oil from day 1 and that the rings didn't "wear out" the issue is because of carbon/deposits stopping the rings from moving in the piston. Which the R&P would address. Also assuming it didn't have some severe cylinder scoring (probably not).

[@brianw8963]

@ I can assume that might be possible, but the low tensile rings is the cause of the oil getting into the combustion chamber, and the valvoline wont repair that problem. Just my assumption. And they actually do burn oil from new, just progressively gets worse. 👍😅

[@kevin9c1]

@@brianw8963 The problem with thin, low tension rings is not that they don't "work" but they are very easily seized with carbon build up. It doesn't take much then they stop moving and the rest you can guess. So if you can get the rings moving again, it should seal up to the original design intent (which would not include massive oil consumption). Again this is barring severe cylinder scoring, or a manufacturing issue (which can also happen and R&P will be useless for that).

[@Frednj3000]

Sometimes customer wants to fix their own.we have customer came towed in the nissan maxima.and i found customer put new battery and put the the positive to negative burnt the ecm.we hqve some spare ecm.and car starts.i can the see the battery terminal have some burn spot.

[@jamesfitzgerald2361]

GOOD thing it was a.car not an Aircraft. Thanks for the video.

[@SAMSAM-zr3hs]

Thank you so much 😉😉😉

[@MH-wg6bz]

you would think more protection would be provided to the ECU to keep high voltage spark from using it's grounds as a return. Leaving an engine to chassis ground strap off is not uncommon. I wonder how other manufacturers deal with that issue.

[@Garth2011]

Education is king. It doesn't make you a good mechanic, you have to have those skills and coordination too however, seeing the light with these computer vehicles is so important unless you are destined to be a parts canon shop. Know your electrical and how to use the scanners and scopes, wire diagrams and tracing down wiring issues are all prerequisites before calling out parts.

[@jamesnall569]

Ivan, it’s normal for the G35 and 350z’s to burn oil. My friend had an 06 350z manual that started to burn oil at 50-55k miles.

[@peterouellette3874]

Nice call

[@Sandmansa]

Unfortunate for the car owner. But at least the root problem was solved, and the car is back on the road. Now, about that convention. I live in the North Philadelphia area. I didn't know about it. I would have liked to have gone. Can someone like myself sign up to be notified of local events like that?

[@keltecshooter]

Even Cosby sauce wouldn't have helped......

[@mikecalvin1402]

Fine work 🎉🎉🎉🎉🎉🎉🎉😅😅😅😅😅😅

[@moefuggerr2970]

Grounds on cars will git ya.

[@zochpeter]

All EV fans should watch this video on weekly basis....

[@brandonsnider7907]

Nissan could have protected the sensitive drivers in the ecm with diodes on the downstream wires.

[@volvo09]

Wow, a G35 that isn't modded into oblivion!

[@joeyh7796]

happens on the ford 3.5 with the coil drivers

[@robertsmith2956]

Should have asked him. did it have codes with the new ECM and the fried coils?

[@rafflesnh]

Ah yes, that well known life skill: Always keep yourself grounded or you'll fry your brain! 🥴

[@edwinlomonacofoolsend]

At the 13 minute marks. I'd go to the scantool and see if live data shows rpm. If so probably bad pcm.

[@rhkips]

Is there some sort of central notification thing I can get signed up for with these training events? I'd love to attend some of these as time permits! :D

[@imadlabiadh4932]

In the running engine , the energy consumed by the coil is from the generator, which in turn is grounded by the engine.The relationship between the engine ground and the chassis ground is only in starting and charging. Does anyone explain why the ECM burned out? Please 🙏

[@major__kong]

Ivan showed the relevant diagram. For that circuit, it would seek ground through the expensive stuff.

[@alexanderzubar9593]

Easy to demonstrate this. Just stand beside the car while not touching anything but the screwdriver shaft inserts into the coil output. Even if you are not touching the car you will get ZAPPED! The inherent capacitance between you, your shoes, the ground you’re standing on and the capacitance of the tires, wheels, bearings, back to the chassis, plus the very high voltage, (40,,000) and very high frequency will make sure it finds a way.

[@Garth2011]

Seems as though that ground fastener was not tightened by those folks who put in the short block. SAD.

[@SHSPVR]

It seems like to me that Infinity did a poor job designing ground feeds the one you tightened up was a body ground they should been a secondary ground on the battery cable going to the engine block

[@damarwirawan1348]

yeap I also have nissan, and its also drinkin oil 😅

[@jhonditch4269]

pretty color

[@alexlongpre4527]

Where do you get the announcement for these seminars from.? I would like to attend some

[@FuManchu5ltr]

lol. The blue whale in the thumb nail just reminded me of the old “Beached As” cartoon. “This car is beached as Bro”

[@michaelpowers4731]

Hey Ivan, do you ever attend vision kc for training?

[@x01e]

Ivan, do i assume off camera you verified that there was no wiring issue from the ECM to the injectors?

[@KT-eh5xs]

would this be the dealer fault for the engine swap, not tightening the ground? not sure if they would believe anyone but their test would show bad ground would cause these issues.