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something hit my plug again...shes dying

  • Thread starter Thread starter gs850cafe
  • Start date Start date
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gs850cafe

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pulled my plugs to see why i have this annoying dead spot every so often...couldnt even fit a plug gap tool in it

so after i checked the other 3 which was good i did a compression check

cyl 4- 125psi....woohoo i thought
cyl 3- 80...wtf?
cyl 2- 75...you kidding
cyl 1- 75..,suzuki you funny now quit joking

dropped some oil in the plug hole an up they shot in psi

so this winter its time for my spare low mileage engine to be put in....

ive put at least 20k miles since a year or so ago...many of those miles have been hard running...

so unknown mileage zuke engine. with your clicks and mosquito replant smoke and oil leakage..you by far are one tough sob

but yet it still runs GREAT...im amazed...
 
Does that motor sound noisy? like a slight knock? On the cylinder that the plug gets closed up look down in the cylinder with a flashlight and rock the motor back and forth with a wrench on the big nut on the right hand side. And watch the piston through the spark plug hole and see if you can see a pause before moving as you switch direction. Sounds like a bad wrist pin bearing. you may also see where the piston has hit the plug through the plug hole.
 
hjfisk said:
Does that motor sound noisy? like a slight knock? On the cylinder that the plug gets closed up look down in the cylinder with a flashlight and rock the motor back and forth with a wrench on the big nut on the right hand side. And watch the piston through the spark plug hole and see if you can see a pause before moving as you switch direction. Sounds like a bad wrist pin bearing. you may also see where the piston has hit the plug through the plug hole.
Click to expand...

yea its had that slight knock every so often since i started riding this bike...only noticable at a idle...

im not to concered about it...im going to swap the worn out one with a new rebuilt 850...

i also should admit its ran low on oil a few times...sometimes up to a quart low...most the time half a quart
 
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