Speedfight how to tell if my piston has gone mark savage

[@drcreator8288]

Honestly these videos have helped me out so much as I knew nothing about bikes and I’ve done so much watching these and I’ve learned so much that a shop would never even think twice about and maintaining my bike is a priority and a shop it way too over prices

[@marksavage]

that's really good to hear bud and please like share and sub and ill all happy then

[@stephencresswell4760]

My rescued 50cc Neos failed to start after 200 miles with a new piston/cylinder/head. Ring had broken up and made a right mess. Piston had melted around the ring pin. Putting it down to me not running it in, unknown oil and possible air leaks. Rebuilding again but will be more careful......

[@marksavage]

Going for 2t oil and maybe the oil pump not oiling the right amount maybe with a Cheap piston ! You refit sounds as it was done right Maybe add a little 2t to your tank as this was what I always did for the first tank full

[@stephencresswell4760]

@@marksavage Airsol piston. Fairly cheap. Expected more then 200 miles. Checked the oiler was working. Was using about 100ml per 5-6litres of fuel. Don’t like the auto lube though. Would rather premix any day. Using Mannol 2T oil this time. Trust that brand. Run it in and make sure everything is tight. The head bolts were not very hard to undo......

[@marksavage]

@@stephencresswell4760 rather that than then snapping lol , someone might of been there before you! Pump sounds like its running ok but can't hurt popping a little 2t in with the fuel except too much gumming up the plug lol If ac make sure the air cover is covering the head or lc water is doing it job

[@timbeynon3516]

Hi Mark do you know what the compression should be on a Peugeot speedfight 4 thanks Tim..

[@Khaoticrascals]

hi Mark. wondered how I can contact u? hoping for some advice on my speed fighter. thanx

[@marksavage]

Barry Wooster on here bud ask away and if I can give you advice I will , mark

[@callmenick4630]

I see the guest you mentioned...

[@leath25]

Hi mark derestricted my 50 cc (just cut the wire)been running great for months 42mph on a straight.went down hill yesterday got up to 48mph bike vibrating engine high and then lost power.put put noise and engine died.tried to start up and very slow engine turn over and same put put noise.would not start.spark plug was nice and tight in engine,new carb recently put on.no oil leeks that I could see.please help.

[@marksavage]

Fist Of Blur Leath25 sounds like engine failure / piston -rings bud The g6y Engines do go like this that’s why they restrict them to 30 /35 mph It’s a big just to sort with the over head cam well bigger and hard than a 2t I’ve often just bought another engine for £100 and swapped it rather than taking it all apart lol Check compression it you can or chain You maybe be lucky to service it and worth a try before you call it dead The cdi do blow but you say you have spark ? And a wet plug? Mark

[@stephencresswell4760]

Sounds like my 50cc. Piston and ring failure.

[@leath25]

@@stephencresswell4760 hi mate just saw your reply,that problem was two years ago but it was a quick fix.the rubber pipe on the front of the carb that is screwed down on top of engine by two bolts has a plastic o ring between the pipe and engine.this had split and was letting air escape.i replaced it and all was well.

[@ethanb6276]

My derbi 50cc 2 stroke cut out on me kick it over had no compression, bump it, started up rode it to try get home and rear wheel locked on me kickstart gone solid any ideas?

[@kynaston56]

Ive just done my piston on a vivacity 50cc, what is the best procesure for running it in? ive only done rebuilds on Rs125's before or geared bikes, qny tips or tricks?

[@marksavage]

Shaun Kynaston add I little 2t to the petrol tank let it tick over for 15 mins then let it cool down and do it again for 20 mins then cool down and take it for a ride just don't open it up for too long and it will be fine for a few rides back to normal riding bud , mark

[@stephencresswell4760]

I melted my piston because I didn’t run it in.

[@leonkurtish9242]

My scooter has a oil leak on the altenator can you help me please i can make a video

[@marksavage]

That’s an odd place to have an oil leak which would look more like an crank / oil seal Which would be bad Check around to see it’s not the oil pump or pipe Which moped is it Yes bud do a video and upload it and as you have subbed let me know and I’ll take a look

[@mad-man8079]

Hello. Do you just work on speedfighters? Or do you do over bikes such are piaggio ect.. cheers

[@marksavage]

To be honest it was what ever I could get hold of so yes speedfight , aerox, dna, typhoon, zip, and a few others its a case of watching a few as most things are basically the same bud

[@mad-man8079]

Oh sweet. Where abouts are you bassed? I have an Piaggio Zip 70cc. Was running about 2 mouths ago but then did still to the carb and tryed to clean the piston head as well. Planning on buying an polini CP carb for it to see if it will start up! But right now the bike sounds like it wants to start good compression ect.. Eny suggests? Cheers mate

[@marksavage]

@@mad-man8079 like in my 70cc big bore kit don't do it videos They can be hard to set up and get not alone keep running The pistons often fail and don't really do much more than the 50cc !! Its not just the head but Carb and set up Plug ! Higher heat to one number up Oil mix of 2t so add some to fuel Coil / ht Variator and rollers upgrade Reeds should be good if they were before Then tune tune and air box

[@itschadrodgers]

hey mark, I was out on my speedfight 2 earlier and the oil light started flashing then it just cut out on me and wouldn't start back up, theres plenty of oil in, any suggestions of what it could be? thanks

[@marksavage]

Chad Rodgers was it the oil light or immob light? , got to start somewhere bud so check for spark, and plug ok fuel getting in . I have a few videos that will help on the checks bud have a look at them , please like and share subscribe , thanks mark

[@itschadrodgers]

mark savage it was the oil light mate, I checked the spark and it had one, and fuel seemed to be passing okay

[@marksavage]

Chad Rodgers like in this. Video did you try opening up and trying to start and is it back firing? Piston? It's the norm if running one min then dies and won't start after ?? , mark

[@itschadrodgers]

mark savage I haven't tried that no, but my bike had a new barrel piston and piston rings fitted about 3 weeks ago

[@marksavage]

Chad Rodgers depending on the quality of the piston they can go again and again bud and maybe the light is that the oil is not getting in or pump not working well and causing it to go in the 1st place ! It's not a lot to Check but to me looking more likely to be piston . Mark

[@johnallinson5161]

Hi mark , i have a leak on my silender head , i have orderd a new one , its a speedfight 1997,100cc , have u the head silender torqe setings plz thx j

[@marksavage]

to be honest bud ive fitted 100s of heads and as in my videos I just know by hand how tight, as in my last videos cbr600 i'm moving house and all my manuals are packed so cant tell you but I do have 80 speedfight videos that will help bud

[@jayjackson9440]

Hi Mark what should compression be on a speedfight 2 50cc lc ? Thabks .. jay

[@marksavage]

hi bud 2t really doesn't matter if they have compression as you can have top compression but no bottom which helps to suck in the fuel or other way round.if you have cleaned the carb and it's sucking in fuel so you plug is getting wet all should be ok and you have spark it can be the piston or the reeds like in my videosthere are a few thing it can be so you need to start some where bud

[@jameshowlett3723]

My bike is not starting it's sparking and getting fuel to it just had new piston and crank and so on but when u put fuel down the cyclender it back fires and smoke comes from the bottom gasket underneath the cyclender can u help me thanks

[@marksavage]

It’s the smoke for under the engine that doesn’t sound right ? Do a video and show me what your talking about along with what bike it is Why you changed the piston / head other parts And how did the bike stop

[@compilations382]

Hi Mark, got a problem with a 4T 50cc. It runs and starts perfectly unless it’s left for like an hour then it won’t start. The only thing that gets it going is if I turn the key off and on again and it’ll start instantly. Would you have any ideas as to why this is happening? Cheers.

[@marksavage]

hi bud how odd as turning on and of the key would only turn on the dash / clocks, it would have to be electrical then does it turn over when you try and start it after the hour ?, could be a short on the cdi or that the key is not connecting in someway but very odd but you have found a fix to keep you going however ive not heard of this problem mark

[@compilations382]

mark savage yeah it turns over but doesn’t start until the key is re turned. Cheers anyway.

[@compilations382]

mark savage yeah it turns over but doesn’t start until the key is re turned. Cheers anyway.

[@riderscam465]

Hi mark and others, I own a speed fight 2 49.9cc moped and I keep having problems with it. First it was loud and wouldn't go more than 10mph so I put a new exhaust gasket in and that seemed to fix the problem temporarily.. It was quiet and how a ped should sound and ride it is unrestricted so I'm not sure if that has anything to do with this next problem that I've got- i used to be able to start it via the electric start button but one day it just wouldn't start electrically and so I've been kicking it over but it takes 1 or 2 or even more kicks to get it started and when it starts it either does 1 of these 4 things: bogs down and cuts out, bogs down and then up sounding like it's cutting out and starting up again, revs get really high and does the complete opposite to bogging down and then runs alright but when I'm driving as I twist the throttle it feels as if I'm getting zero power to the engine and it sounds as if it's miss firing but to stop it making the sound and loosing power I pull the back break slightly which somehow stops the problem temporarily... I'm so stuck does anyone know what the source to the problem(s) could be? Note: the exhaust is louder again but all the seals are bottled up and tight, no holes in the exhaust either Thanks

[@marksavage]

Riders Cam hi bud ok exhaust is it a sports exhaust if so it may need re- Wodding as in my video so follow that and that will help a lot with sound and pull away , if standard it may have a crack , most of this sounds like your carb this really does cause so many problems so follow clean carb video also make sure it's tight and needle is ok , air filter / plug and so on but do watch my other videos on these bits bud , hope that's a start for you and helps , please like share and subscribe , thanks mark

[@marksavage]

Riders Cam oh and as for the brake that's odd maybe use wd40 on all electric connectors and plugs that may help check none are split , mark

[@riderscam465]

mark savage okay I think instead of cleaning the carb I might just get a new one as the previous owner didn't take care of the bike and the carb is filthy with compacted dirt all around it but thank you so much for your help and keep up the good work

[@riderscam465]

mark savage oh and for the exhaust I have no clue I think it's a standard speed fight exhaust but the bikes had many problems... Guess that's why you don't just buy a cheap bike for £250

[@jameshowlett7880]

Hi Mark I was just wonder if you can help I have a boatian falcon 2 stroke it won't start it has a spark and it's getting fuel to it it will start once in a blue moon but when it's start it goes for about 30 seconds then dies

[@marksavage]

E10 FUEL?? when did it start as in none starting lol carb clean , auto choke , plug is getting wet ?

[@jameshowlett7880]

@@marksavage I have cleaned the carb about 4 times the plug is getting wet but I have not checked the auto choke

[@marksavage]

@@jameshowlett7880 to do what its doing sounds like to me with out see it nor knowing what ped or bike it is sounds like carb problems and may need changing , inlet mainfold?, reeds?

[@jameshowlett7880]

@@marksavage okey Mark thank you for the replys I will try these things and get back to you

[@rosemarieparker1231]

Hi pal, just got a speedfight 2 it starts after a while off kick as button dont work think its the relay.. Anyway it starts bogs out unless u rev it loads when back wheels off the floor but if dont rev it loads it bogs out and made a pop noise near exhaust/fan iv had it started since then so not blown up just dunno whats making it bog... Everytime i have to rev it loads unless will bog .. i ant looked over bike yet only had a week therr is a pipe missing off air box.. I saw one off ur vids saying some run fine without it some dont

[@marksavage]

hi bud well start with a service so plug , air filter clean carb like in my video'sthen if it still does it we can look as the jetting side of it and any thing else it might ne mark

[@rosemarieparker1231]

Okay pal so u don't recon it's bit on the air box missing

[@marksavage]

Rosemarie Parker have a go bud it may be so worth a go Mark

[@ChadTheLad]

Hi mark, my bike was running sweet yesterday after cleaning the carb ect. But today I come to it and it ticked over for about 3 mins and cut out, and now it's doing this full throttle backfiring as I'm going to start it. Please help? And sorry that I keep asking, I do look through your other videos but can't find really what I'm after.

[@marksavage]

you do ask a lot lol guessing im helping you fix many mopeds ! sounds like the needle is getting stuck of your sucking in air, its all to do with the carb bud

[@ChadTheLad]

@@marksavage lol yeah I had a ditech aprilia before couldn't get it running so sold it and ended up with a speedfight, I'm only 16 trying to get my first moped running mint, not having much luck lol.

[@ChadTheLad]

@@marksavage sorry quick question what is the compression of 50cc lc speedfight? I'll compression test it tonight.

[@michaelhughes3549]

If there carbon build up does it mean it's gone? And if there blue skinny stuff in the sump what does it mean I saw this in your other video

[@marksavage]

Michael Hughes like on this video the piston had gone

[@rimantassadeikis3515]

easy way to check if the piston is gone ( no comresion) just unscrew spark plug cover the hole with your finger and try to kick start it if your finger wont get pushed out that means your pistone is gone

[@paulsmith-zu1wx]

How do you test an oil pump on the LC speedfight?

[@marksavage]

I do have videos on it but are in along with other things Check out one of my newest videos It's a dark blue one and I explain it

[@marksavage]

This one kzbin.info/www/bejne/h2W7n6OFot2Vnc0

[@michaelduchan4497]

Hi mate my bike won't kick in I've changed the stator coil and spark plug wired the bike back up it's turning over but not firing in with no spark any help please

[@marksavage]

if you have no spark like in my cdi videos you will need to change it, check then videos out on my channel they will help , mark

[@michaelduchan4497]

I've changed the cdi mate it has 5 prongs on the cdi connector but the wiring is only 4 prongs is that right

[@louiegibson2697]

I've just got a speedfight one an my belt is warn down I can feel when pulling off going round corners aswell what could this be an I got another speedfight that goes backwards what can that be timing ?

[@marksavage]

hi bud change the belt and have a look at your rollers plus clutch as in my videos on this system and I have loads of other videos that will help over 50 lolspeedfight running backwards I have heard of this before, and it was a wrong starter fitted that turn over over the wrong way give that a look but it can really damage your engine !!hope that helps mark

[@louiegibson2697]

mark savage basically the ped will run fine but when I go to pull away only sometimes it won't move but will still tick over fine an when I pull of when it doesn't do it it goes slow then has a burst at like 10 mph

[@marksavage]

yes defo have a look at the variator belt and clutch as it sounds like it could be to do with that or as in most of my video problem the good old carb maybe give that a look. mark

[@frodoemedia5591]

Alright mate my Peugeot vivacity was running with a lot of smoke coming out of the exaust by now it's stopped kicking over

[@frodoemedia5591]

Could this mean the piston has gone

[@marksavage]

they are smoke a little worth looking over it first with a service and carb clean, check for spark and fuel getting in, I have many videos that will help

[@marksavage]

as for piston it maybe but start with the basics bud then check for compression

[@frodoemedia5591]

@@marksavage nice one mate

[@johanjohansson8306]

Hi Mark, I have a problem with my speedfight 2 when I was going up a hill on full throttle the bike bogged down and I let go and opened the throttle fully and it was good for like 5 seconds then it bogs down again I have cleaned the carb but the problem is still there the next day I was riding I came to a stop and opened the throttle and realized it died, tried to start it but nothing no splatter or anything tried kicking it also but nothing also tried with starting fluid can it be the piston?

[@marksavage]

I have another 70 speedfight videos that may help , type in speedfight mark savage and I have another channel were they are all on a play list however does sound like petrol, did you do the carb hand test as in my video spark plug ok and good spark pistons do go, test open up throttle and turn over if it pops and back fires it can be piston but go through basic steps first but my videos will help

[@johanjohansson8306]

I don't think it is the petrol because it doesn't even start on starting fluid

[@marksavage]

@@johanjohansson8306 sometimes it wont bud so check out the carb take it back off and have a good look clean and test

[@johanjohansson8306]

OK but it could not be the reeds can it?🤔

[@jasoncosta3050]

Hey Mark how U going my scooter starts when I put my hand over the air intake once it start then I turn off it'll kick over Eazy but yer when it sits for abit it won't unless I repeat the above

[@marksavage]

Carb problems bud and common Service carb Change auto choke Change air filter and use original air filer box Check float and vacuum system

[@jasoncosta3050]

Ok I'll give that ago I bought it of a guy bout week and abit ago and he didn't have a filter on it coz apparently it wouldn't run with one on he has put a 17.5mm carby coz he put a 70 kit, tecnigas sports exhaust so IV just got the crappy spunge filter on it as the housing on the air box he gave me with it no longer fits on the air intake IV been wonting to put the proper airbox on. Also the some reason cut the auto choke of so I just rewired it and have it connected again but yer only starts when put hand over the carb IV tryed tuning it but hasn't seams to do anything

[@marksavage]

@@jasoncosta3050 70 kit , wrong air filter and auto choke All problems bud Out back to standard but with a small upjet of 4 to 8 higher Sports inbox filter and tune like in my tuning video

[@jasoncosta3050]

Do U think I'll be better off buying a hole new carby is so what do U recommend mate

[@jasoncosta3050]

Am I also better of putting a 50cc head back on

[@reecebayly253]

Hi mate got lc speedfight 2 keeps over heating replaced pump and rad but still over heats when riding when I pull over it cools down

[@marksavage]

hi bud so replace water pump and all air locks out , ran bike with cap off till all water ran fine. if so !! sounds like you may have a blocked head or piston gone , are you loosing water ? time to take the head off, I have many other videos that will help with over 70 videos on speedfights

[@reecebayly253]

Yea all seems fine no leaks all air bubbles out run bike with out cap on done all As should so guess I have to check piston thanks for all your help buddy really appreciate it give me a shout out if you do another speedfight video

[@reecebayly253]

Hi mate took piston off light scoring and burn marks under the piston rings can you add me so can send some pics bud

[@reecebayly253]

Hi mate so my piston is coming tomorrow what’s the best way to bed in the piston on a speedfight 2 lc 50cc

[@cerigardner7383]

My ped will fire up on spray soon as taken away will bog out some white smoke to speed fight 2 50cc and advise be awsome

[@marksavage]

Defo fuel problem Carb off Check fuel line then vacuum to see if fuel is coming out and going into carb Clean carb check float Like in my videos bud If not come back

[@cerigardner7383]

mark savage I checked the carb it’s all clean getting fuel

[@marksavage]

@@cerigardner7383 wet hand test ? If nit getting wet Reeds or rings Could even be oil seals

[@cerigardner7383]

mark savage ok fella I’ll check

[@thisworldis8146]

hi mark i got a 100cc peugeot speedfight 2 how do i put my piston in correctley please with no arrow please

[@marksavage]

hi bud I have a few video on fitting piston that are helpful with and without the arrow, however for yours make sure the piston ring clips are to the rear of the head but really they should have an indication which way round so worries me it's a cheap piston.make sure you use 2t oil to seat it in and kick over slowly once you tighten the head down but not too tight before a test kick then all the way once you know it seated right hope that helpplease like share and sub,mark

[@thisworldis8146]

thank you your videos are the best ive sub though my email 👍

[@rimantassadeikis3515]

about how to know if your piston is gone there is another way to check it usncrew spark plug cover the hole with your finger and kick engine over if your finger isnt pushed up or you dont fell anything that baisicli means no compresion (bad piston , rings ) its just my way to check it :) sorry for bad english :D

[@marksavage]

rimantas sadeikis that helps but when the piston is scored or blown a little hole in it you still get compression So really if it’s back firing on open throttle and not starting after all the checks as in my 100 odd videos it’s still best to take off the head and check Thanks for watching and your advice Mark

[@rimantassadeikis3515]

ohhh didnt thought about thad :D thanks :)

[@krystiannowak4824]

Ehhh my speedfight loosing power was at garage 3 weeks and they dont know nothing i was in 5 garage's....

[@marksavage]

Krystian Nowak I have over 70 speedfight videos do some have to help bud give them a watch but loosing power Would normally be carb or piston / rings problem Please give them a watch and like and sub Mark

[@winstonbanks1057]

Mark give me call please