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On a 1997 Yamaha GP1200 Waverunner. On a replacement rebuilt engine the rear cylinder will not fire. The engine was replaced because this same cylinder on the original engine either ran lean or the oiling system did not function properly. The piston and cylinder were destroyed on this cylinder The other two cylinders on the replacement engine will fire and run. All cylinders have good spark. Any suggestions? Thanks, Bill

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: replacing rear brake pads on a 2006 yamaha raptor 700

open bleeding nipple slightly insert anything flat and push back piston ,lock bleeding nipple put pads in and pump brakes

Posted on Aug 29, 2008

  • 2336 Answers

SOURCE: cylinder head skim

From my understanding, the combustion area of the head should have a diameter that is the same as the cylinder i.e. 56mm. If you took 0.5mm from a standard head, your squish would PROBABLY be Ok, however, you need to measure this. Its quite easy, poke a piece of solder wire in to the cylinder via the spark plug hole and trap it between the piston and the head by gently turning the engine over with the kickstarter by hand. Remove the squashed solder wire and measure with a set of vernier calipers. 0.8mm is about right and as Elf said, anything below this is getting a bit close. Do this for the front, back and left and right of each cylinder. Reducing the squish only has only a moderate effect on the compression ratio and does not require higher octane fule. I did this for mine and it was fine - so you 'should' be Ok.

Posted on Nov 20, 2008

  • 166 Answers

SOURCE: mazda rx 7 rebuilt kit clutch master cylinder.

crack the bleeder nipple on the slave cyl and get some one to slowly push the pedal see if any fluid shoots out if not you may have killed the new seal in the master cyl.
it sounds like you did every thing right its just that old cylinders get were in them and if you don't hone them out and put a new sleeve in them quite often you will rip the new seal apart on the first pump of the pedal.
any way check for presser and let me no

Posted on Dec 21, 2008

roedmondson
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SOURCE: 2000 CIVIC System too lean Cylinder 3 and 4 misfire Deteced

  1. P0171: This means that the oxygen sensor has detected a lean air-fuel ratio. This can be caused due to a vaccuum leak or a problem in the HO2S circuit or the HO2S (Heated Oxygen Sensor) itself. (Bank one Sensor one). This is commonly located along the exhaust pipe. It could also be a bad Mass Air Flow sensor or a bad Engine Coolant Temperature sensor. Diagnostic checks will be needed to be carried out to be verified though
  2. Well as for the other codes, it means #3&4 cylinders are misfiring. It is a possibility that the P0171 code mite have caused the others to show up. I can be wrong though. But it is a strong possibility. If the air fuel mixtue is too lean indeed, mis-firing will occur, unless it is an actual electronic and not a mechnical problem. By the way, when these codes appear, how is the engine's performance. Does it remain the same or behaves poorly?

Posted on Feb 14, 2009

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SOURCE: 1998 GP1200 yamaha jet ski won't start

When replacing battery in yamaha GP1200 when attach negative cable the unit seems as wants to turn over the engine while the unit is off and no key in place.. also notice in seconds that the battery terminal on negative side started smoking..actually melt the new battery terminal on negative side..yes, postive was connected to positive. Any ideas what why this would take place??

Posted on Aug 16, 2009

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