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Old 04-12-2012, 02:54 PM   #1
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Default Kawasaki Prairie 700 Valve Problems

Hi there guys new member to this site.
I picked up a 2005 Kawasaki Prairie 700 yesterday as a project bike, the engine is not running but i got the bike for a steal. Easily part it out and make money but that's a last resort.
Story is the last owner was driving across the lake in the winter time and the bike just died on him. Its got 7500 km on it.
I took it home and checked compression and both the front and rear cylinders are flat >20 psi. I then took off the valve cover so that the rockers were off the valves and then checked the compression of the cylinder itself and it was in the low 90's for psi. Has anyone had this problem before? Any knowledge would be greatly appreciated!
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Old 04-12-2012, 03:04 PM   #2
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The intake valves go tight, that causes the loss of compression. The first symptoms are hard starting. The cams have auto compression releases, so the compression is low when testing; something like 50-70lbs is normal. 20lbs is not enough to start.
It doesn't explain why it stopped dead.
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2002 665 Prairie
FPS 12:1 pistons
FST Stage II Cams
Mild porting
Crossover intakes
Modded airbox
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Old 04-12-2012, 03:20 PM   #3
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Is it feasible to shim the valves or is replacing them a better option, i just shimmed my Crf250r and it worked great.
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Old 04-12-2012, 03:30 PM   #4
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It's your lucky day!
No shims; there are adjusters on the rocker arms.
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2002 665 Prairie
FPS 12:1 pistons
FST Stage II Cams
Mild porting
Crossover intakes
Modded airbox
Full Muzzy
Dalton weights
VFJ Springs
Other weird stuff

2011 Stratos 186XT Bass Boat
Mercury Optimax 115hp
Minn Kota 70lb 24v trolling motor
Lowrance Electronics
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Old 04-12-2012, 03:32 PM   #5
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Beautiful, ill see what that does.
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