no idea whats wrong

fast02blaster

fast02blaster

New Member
Nov 3, 2012
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1
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newark delaware
ok last week put new pipe on y bike full pro circuit so it ran like o so bad because of a exhaust leak so i parked bike sealed exhaust and did a rear swingarm extension so it was down with rear off for like a week or so. so i been trying to ride past two days but the bike will not start at all got great fuel and perfect spark so idk whats wrong with it any help at all is appreciated im fearing no compression fried rings
 
fast02blaster said:
ok last week put new pipe on y bike full pro circuit so it ran like o so bad because of a exhaust leak so i parked bike sealed exhaust and did a rear swingarm extension so it was down with rear off for like a week or so. so i been trying to ride past two days but the bike will not start at all got great fuel and perfect spark so idk whats wrong with it any help at all is appreciated im fearing no compression fried rings
Click to expand...

what are all your mods and whats your main jet?
 
leak test hen compression test after that if it lookn good turn the gas on and then stand it on the grab bar and let gas run out of the carb because i have to do that to mine to get it to start after if sits for a while
 
mud runner said:
leak test hen compression test after that if it lookn good turn the gas on and then stand it on the grab bar and let gas run out of the carb because i have to do that to mine to get it to start after if sits for a while
Click to expand...

you must have a problem to if you have to do that, mine sits for months at a time at my grandpas in the winter unridden with gas in the carb and it always starts 1st kick with the choke all the way on
 
It's bored 30 over main jet 300 full pro circuit exhaust air lid off tors disconnected and basically stock everything else stock cleaned carb out and all idk just frustrated gonna do a compression test tommarow never did leak down test I just hope when. It was bogging down so bad that I. Didn't fry the piston and ring from 3 min ride
 
Change the spark plug! 300 seems really rich. Put a new plug and 280 main in. Then do a plug chop and post results.
 
fast02blaster said:
It's bored 30 over main jet 300 full pro circuit exhaust air lid off tors disconnected and basically stock everything else stock cleaned carb out and all idk just frustrated gonna do a compression test tommarow never did leak down test I just hope when. It was bogging down so bad that I. Didn't fry the piston and ring from 3 min ride
Click to expand...

i have a 300 with a full fmf and no airlid, did you leaketest the engine after i sold you those reads and you installed them?
 
Idk I'm doing a compression test tommarow after work it won't start at all I kicked it prolly 40 times tonight over time and its a brand new plug getting plenty of spark checked that but not feeling any pressure out of the muffler when I kick it either so I'm really thinking I might have no compression it's so aggravating thought it was the aftermarket reeds that I installed so put the factory's back in and still nothing my bike was on a incline with rear like 2 ft off ground for two weeks doin the swinger and the rear and I put it down and it won't start I ran bike with the pro circuit exhast up and down street but it was leaking so bad had no power and te bike was bogging so bad I parked it sealed exhaust and stated doing the swinger and all so now two weeks later after letting exhaust seal as all now it won't start at sll
 
By chance did it sit with the fuel on while it was nose down? Have you looked at new plug since you put it in. Might have filled crankcase with fuel. You do have spark? Ain' t re-reading.
 
No carb was actually off the bike for most of the time and never leave my gas on yes I do have spark and constant stream of gas out of the tank and I did pull plug and it got a little flodded smelled like gas cleaned it up and let it sit for few before trying to start again
 
Wifesblaster said:
89blaster89 said:
i have a 300 with a full fmf and no airlid,

Just curious, what elevation do you ride? We ride at sea level and our bikes with full fmf's like 270's. Plug chopped to perfection. Not saying yours is wrong, just curious.
Click to expand...

im at 250 feet above sea level, and im on a 300 main jet full fmf, no airlid and aftermarket filter... i run it pretty rich, why run it as lean as possible, running rich gives room for error
Click to expand...
 
fast02blaster said:
Idk I'm doing a compression test tommarow after work it won't start at all I kicked it prolly 40 times tonight over time and its a brand new plug getting plenty of spark checked that but not feeling any pressure out of the muffler when I kick it either so I'm really thinking I might have no compression it's so aggravating thought it was the aftermarket reeds that I installed so put the factory's back in and still nothing my bike was on a incline with rear like 2 ft off ground for two weeks doin the swinger and the rear and I put it down and it won't start I ran bike with the pro circuit exhast up and down street but it was leaking so bad had no power and te bike was bogging so bad I parked it sealed exhaust and stated doing the swinger and all so now two weeks later after letting exhaust seal as all now it won't start at sll
Click to expand...

You may well have no compression.

No leak test performed, leaky header, recipe for disaster.

Take the pipe off and get a look at the piston and rings up the exhaust port to see it there is any damage to them.
 
Ok ill so that tonight a a compression test if compression fine ill try and do a leak down test but even if there is a leak wouldn't it still start? And If I have no compression what's it mean rings are fried
 
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