HELP! Doesn't hold compression in CYL #4 after ILP
Joined: Mar 2005
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From: honolulu, hawaii
well coolant can get in if you didnt drain the block when you removed the head. it can spill in from the coolant passages by the sleeves. maybe the head was warped. did you check for straightness? maybe pressurise the cooling system and you well hear a leak from the spark plug hole.
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Joined: Dec 2007
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From: Raleigh, NC
The actual compression number isn't important as long as all 4 are consistent. I've seen as much as a 50lbs difference between two different gauges back-to-back.
Have you run it? Check the coolant for combustion elements, and make sure your oil isn't chocolate milk.
Have you run it? Check the coolant for combustion elements, and make sure your oil isn't chocolate milk.
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Joined: Dec 2007
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From: Raleigh, NC
In your situation no. I would want to inspect the decks for contamination, straightness, etc. It wouldn't be a bad idea to check out the valves in that cylinder either.
One question: does your compression tester still work on another cylinder? They use cheap schrader valves to hold pressure, and the seals get damaged easy.
One question: does your compression tester still work on another cylinder? They use cheap schrader valves to hold pressure, and the seals get damaged easy.
Joined: Mar 2003
Posts: 6,507
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From: Sellersburg, IN
Definitely check your coolant holding pressure.
You know what's funny, I've had the 3mm HG on for almost 2 years now and I park my car during the winter for up to 4 months at a time without ever starting it. Well, I decided to go ahead and check the coolant level before starting the car up for the first time in 4 months and low and behold, it had tons of pressure release behind the cap when I opened it. I'd say I don't have any leaks with my HG with that find and I have been running 28 psi for over a year now. LOL
You know what's funny, I've had the 3mm HG on for almost 2 years now and I park my car during the winter for up to 4 months at a time without ever starting it. Well, I decided to go ahead and check the coolant level before starting the car up for the first time in 4 months and low and behold, it had tons of pressure release behind the cap when I opened it. I'd say I don't have any leaks with my HG with that find and I have been running 28 psi for over a year now. LOL
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Joined: May 2006
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From: Braselton, GA
Originally Posted by Soul Coughing,Apr 10 2009, 09:35 PM
rtv around the entire gasket? or on the cam gear area?
no issues. I know a gasket for the gasket is kinda weird but heh just making sure.
Thread Starter
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Joined: Jul 2006
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From: Calgary, Alberta
Originally Posted by Spoolin,Apr 11 2009, 01:18 PM
Definitely check your coolant holding pressure.
You know what's funny, I've had the 3mm HG on for almost 2 years now and I park my car during the winter for up to 4 months at a time without ever starting it. Well, I decided to go ahead and check the coolant level before starting the car up for the first time in 4 months and low and behold, it had tons of pressure release behind the cap when I opened it. I'd say I don't have any leaks with my HG with that find and I have been running 28 psi for over a year now. LOL
You know what's funny, I've had the 3mm HG on for almost 2 years now and I park my car during the winter for up to 4 months at a time without ever starting it. Well, I decided to go ahead and check the coolant level before starting the car up for the first time in 4 months and low and behold, it had tons of pressure release behind the cap when I opened it. I'd say I don't have any leaks with my HG with that find and I have been running 28 psi for over a year now. LOL
But in my situation i don't find it that funny.... haha.
