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By Ed Zeppeli
I picked up this quad after the previous owner couldn't get it going.
The issue is that I can't get it to fire at idle or at all.
- replaced plug. Decent blue spark. Also tested with spark tester inline.
- rebuilt the carb. PO had already bypassed vacuum lines from petcock. There's fuel at the cylinder
- Checked compression with new gauge. reads 190 psi
- cleaned all contacts I could access.
- am currently jumping with car battery. Solenoid jumpered.
- checked cam timing at TDC and adjusted valve lash
- put gas directly into cylinder to see if it will fire at least momentarily
Motor turns over well. Plug gets wet.
Motor may fire once or twice but smokes through exhaust a bit as if it's trying to fire or combusting.
This leads me to suspect timing. As mentioned I checked the flywheel mark versus cam marks. Perhaps someone has been in there before because I can't find a 'T' on the flywheel but there is a very visible paint mark which aligns with TDC position on piston. Possibly a slipped flywheel/woodruff?
Is it possible that if it had seen previous repairs, that the timing could still be off? I'm reluctant to dig into the flywheel/stator area if there's something else I could have missed but all signs point me to that area. Would a bad CDI cause spark timing to be off?
Anywhere else to diagnose incorrect spark timing?
I've scoured these forums and elsewhere but I'm posting just in case there's something I've overlooked up until now.
Thanks very much for reading!
By Shawn Hendershot
Got myself another project. Got it running only to find it has a transmission problem. now I am trying to rebuild it but problem is the bolt that holds on the pull start recoil gear. Any ideas if this is left threaded or right threaded. Left loosy or righty tighty.
these are what i have in my collection ... always looking for more
1985 - 1990 Suzuki LT230 & LT250 Service Manual
1987 - 1998 Suzuki Quad Runner 250 & King Quad 280 Service Manual
1987 - 2006 Suzuki LT80 Service Manual
1987 Suzuki LT500R Quadzilla Service Manual
1988 - 1992 Suzuki LT250R Porting Instruction
1988 - 1992 Suzuki LT250R Quadracer Service Manual
1988 - 1992 Suzuki LT250R Tuning Guide Instruction
1999 - 2004 Suzuki King Quad 300 Service Manual
2002 - 2007 Suzuki 500LTA Service Manual
2002 - 2009 Suzuki LTF250 Ozark Service Manual
2003 Suzuki LTZ400 Service Manual
2006 Suzuki 50LTZ Quad Sport Service Manual
2004 Suzuki 250LTZ Quad Sport Service Manual
2005 Suzuki LTA700 King Quad Service Manual
2007 Suzuki 90LTZ Quad Sport Service Manual
2008 Suzuki 400FLTF King Quad Service Manual
2008 Suzuki 750 King Quad Service Manual
2009 Suzuki 400LTZ Quad Sport Service Manual
ALSO CHECK SUZUKI ATV SERVICE MANUAL DOWNLOADS
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By Christopher Williams
i just rebuilt the top end of a 99 Bear Tracker 250 and it can’t get it to hit off of gasoline or starter fluid. Occasionally it will backfire. Right now I’m just trying to get it to fire off without the carburetor like I’ve done a thousand times before with other engines. Usually there is no response, but occasionally I get a backfire through the intake. ISeems like it’s out of time, but I don’t see how that could be possible.
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