1998 King Quad 300 won't fire. - Suzuki ATV Forum
Repair and Maintenance Having problems? Doing a rebuild? All Repair/Maintenance Discussions here.

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post #1 of 3 Old 06-17-2019, 11:41 AM Thread Starter
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1998 King Quad 300 won't fire.

Hi all,

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.

I've...

- replaced plug. Decent blue spark
- 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 backfires through exhaust or from out of intake side but mostly exhaust from what I can tell.

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.

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.

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!


Warren
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post #2 of 3 Old 06-17-2019, 04:45 PM Thread Starter
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Is there a good source for the service manual for this motor online?


Something recommended by the consensus of forum users?

Tks
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post #3 of 3 Old 06-17-2019, 11:20 PM
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Look up a site called Tradebit. They sell various PDF style service manuals at a very reasonable price. Between $10 - $20.


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2000 Suzuki King Quad 300 4x4
K&N Air Filter
2300 lbs Superwinch
Kenda Bear Claws (Rear 25X10-12) - (Front 24X9-11)
Differential Lock Mod
14,000 + km/s
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