1987 Suzuki QuadRacer LT250R Backfires and kicks

[Ypner1503]

Hello and good morning I have a 1987 250 quad racer big carb and engine built . Other day I was driving it it popped and it died on me so I towed it home cuz I didn't want to prevent any more damages try to start it when I got home she backfired and kicked back hard. Need some help if anybody can help me out thanks

 

[bobbo]

what is your compression at ? 

 

[MarkinAR]

I'd check the timing before going too deep into the motor.  Sounds like the chain flopped and jumped a tooth or woodruff key sheared on the crank.  Backfiring  is usually caused by either firing at the wrong time or intake valve not closing completely.

[bobbo]

It's a 2 stroke  so it wouldn't  have a timing  chain 

7 minutes ago, MarkinAR said:

I'd check the timing before going too deep into the motor.  Sounds like the chain flopped and jumped a tooth or woodruff key sheared on the crank.  Backfiring  is usually caused by either firing at the wrong time or intake valve not closing completely.

 

[MarkinAR]

Ha, good catch.  I read quad runner, not racer. 

[bobbo]

5 minutes ago, MarkinAR said:

Ha, good catch.  I read quad runner, not racer. 

ha, i love the old quadracers had 4 of them back the 90s  3 250s and a 500  ... wish i could find one again 

[MarkinAR]

Never had a 2 stroke.  I've had a 125, 185, have a 250 quadrunner in the garage now, king quad in the past, about everything Honda made in an ATC, some Kawi's, a Can Am now. Just no 2 strokes.  Thought about buying one recently just because I have no experience with them at all.

[bobbo]

31 minutes ago, MarkinAR said:

Never had a 2 stroke.  I've had a 125, 185, have a 250 quadrunner in the garage now, king quad in the past, about everything Honda made in an ATC, some Kawi's, a Can Am now. Just no 2 strokes.  Thought about buying one recently just because I have no experience with them at all.

junk to keep running but alot of fun and an easy fix with no timing bs if they do pop  ha 

[Dion Braud]

was it the woodruff key on the flywheel?

 

[giohhhhhh]

did this get resolved?