High compression issues
- Thread starter Doo_girl
- Start date
Lund
Active VIP Member
Its pumping oil in that cylinder, bet ya the base is full of oil. I would check the oil pump case seal inside the crank case. But first confirm the base is over oiled. There is alway oil in the base, that is normal. What your looking for is the amount compared to the other side, you will probably find that there is too much oil.
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Culvert
Active VIP Member
At that high of compression, would think it hyd locks.
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Faulty compression tester??
- Staff
- #5
- Joined
- Oct 21, 2006
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- 48,082
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- 32,189
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Also check that the coolant is proper level... Could be coolant leaking into that cylinder/case?
slededjr
Active VIP Member
could be full of fuel from stuck float as well. 240?? wow, i wanna see that. lol
- Thread starter
- #7
Lund
Active VIP Member
Ok, going with the info you gave this is what happen. Again without seeing it, this is the internet.
What has happen is the cylinder at fault is pulling in oil from the oil/water pump drive shaft cavity. The crank shaft will have seals to isolate each cylinders, the seal on the fault cylinder closest to the oil/water pump drive has failed thus on the piston up stroke the cylinder vacuum will pull the extra excessive oil in. Here is a picture of your crank. #26 is the seal giving you trouble, #12 is the gear that drives your oil pump and water pump, it is lubed by the oil pump also but isolated by the #26 oil seals from the cylinders.
The repair is simple but expensive, your going to have to replace the crank. Seal replacement can be done but generally your better to replace the whole crank. Plus, you said it is an 07, so i suspect it has mileage on it, so the crank will be out of spec. almost guaranteed.
Hope that helps
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