Cant loosen valve, on rebuilt engine |
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Cant loosen valve, on rebuilt engine |
ericoneal |
Dec 18 2014, 07:57 PM
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#1
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Member Group: Members Posts: 320 Joined: 13-August 12 From: Crestwood, KY Member No.: 14,795 Region Association: South East States |
We, walterolin and I, were trying to adjust the valve on my newly rebuilt engine tonight and we couldnt get the intake valve on #1 to loosen. We found TDC, 0 mark on the fan and #1 exhaust valve adjusted just fine. The problem is that I loosened the screw completely on the intake valve and I still could not get the feeler gage in there and it wouldnt budge (slightly rattle) when we tried to shake it by hand. Its REALLY tight.
After that we turned the engine so that the valve was for sure all the way open, and nothing. The screw is all the way backed out and its completely tight no matter what position it is in. What could cause this? My engine builder told me that he adjusted all of them to .006, so it obviously was correct at some point. At a loss here.. THanks |
stugray |
Dec 19 2014, 10:53 AM
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#2
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Advanced Member Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None |
Most of the times I hear that people cannot find TDC, it is because they are struggling just to turn the engine.
Put the rear on jackstands ( or one jackstand and one ramp). Block one wheel so it cannot turn. Pull the spark plugs Put the car in 5th gear turn the wheel and the engine will turn "almost effortlessly". Now get under the car and watch as someone else turns the engine for you. After about three complete turns without struggling, you will understand how the valves work. In fact using this method, you can find TDC#1 quite accurately without any marks. But you have to watch it go around a few times before you have that moment where it makes perfect sense. |
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