well my cylinder head was warped so yesterday i changed it for another 1 wilst i was there i opend the powervalve up all the way put it all back 2geather runnin great me and my mate went for a spin was doing about 70mph an all of a sudden the bike desides to cut its self out and nearly threw up both flying over the hadle bars, so i pulled up gie it a kick and it started got going again and same thing happend so waited on the petrol station for abit b4 headin home and just b4 i got home it did the same thing again :/ i just dont understand what the problem could be because it starts up staight away after iv stopped and give it a kick :/ im ready to put a match to the thing lol can any1 help?? cheers
Sounds like the engine is seizing up on you - check your oil delivery is okay, and there's oil in the tank, etc.
Chances are though you've probably done a fair bit of damage to the cylinder and/or piston in which case you'll be looking at a rebore to put it back to perfect.
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Just because I don't care, it doesn't mean I don't understand...!
its pre-mix mate the owner b4 me took oil bottle of and premixed it... the oil pump is still there but havent been botherd about getin the 2stroke bottle for it just yet so just been pre mixing it .... s what the best thing to do, take the top end of and have a look around it? i had it rebored about 2-3weeks ago + new piston etc.... what is the most likely thing that could of happend to it, will the bottom end be alrite :/
What ratio of 2 stroke have you been adding to the petrol?
-- Edited by fray on Friday 12th of November 2010 02:28:51 PM
the chap i had it of gave me sum beeker thing and it has markings on it he said put so much in for every litre so i did and it was running ok... but the other day i was out ov petrol and had no 2stroke so had to buy some from tesco and just mixed it in i think i put a cap in for every litre .. but it was running ok .. i opend me powervalve once id fitted other cylinder head and thats wen the problem started and last night i was riding home and it did it again put the kick start wudnt budge then i managed get enuff weight on it to get it to kick no chance i was pushing it that far lol
There's a chance the you've been too lean, cos a cap per litre is probably near 100:1 or less or something like that, dunno really - just guessing! A bottle cap can only be about 10mls or so...
Getting another bottle and using the pump is definitely the best bet.
Take the top end off and have a look - its good you been using some oil, but I'd have to fear the worst, especially if its a recent rebore too. It'll still be fairly tight in there. Its definitely not seized cos of not being run in though. I had mine rebored recently at PJME - warmed it up fully, cooled it down for an hour, warmed it up fully, cooled it down for an hour, warmed it up fully and took it out and thrashed the cojones off it - ran like a dream! Sorted!
Keeping my fingers crossed you'll be okay, despite a couple mild seizes! Don't give up on it totally though, cos when they run well they're awesome bikes!
-- Edited by Malc on Friday 12th of November 2010 05:43:13 PM
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Just because I don't care, it doesn't mean I don't understand...!
There's a chance the you've been too lean, cos a cap per litre is probably near 100:1 or less or something like that, dunno really - just guessing! A bottle cap can only be about 10mls or so...
Getting another bottle and using the pump is definitely the best bet.
Take the top end off and have a look - its good you been using some oil, but I'd have to fear the worst, especially if its a recent rebore too. It'll still be fairly tight in there. Its definitely not seized cos of not being run in though. I had mine rebored recently at PJME - warmed it up fully, cooled it down for an hour, warmed it up fully, cooled it down for an hour, warmed it up fully and took it out and thrashed the cojones off it - ran like a dream! Sorted!
Keeping my fingers crossed you'll be okay, despite a couple mild seizes! Don't give up on it totally though, cos when they run well they're awesome bikes!
-- Edited by Malc on Friday 12th of November 2010 05:43:13 PM
cheers for the info mate il get to work on it tomorrow strip the top end down and have a look mayb a good idea if i turn my powervalve down aswel lol atleast until iv got the 2 stroke system setup agen
just had a look in my wallet i have a 125 main - standard cus your still running a round slide i presume, and also sizes 130, 150, 180, 270 (270 is way bigger than you need) and i have a 190 as well in my old carb in the shed, with the powervalve pegged open i found it needed 170-180 main with that carb and everything else standard, pm me with what you want
