#4 Cylinder intake valve stuck open |
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#4 Cylinder intake valve stuck open |
gnomefabtech |
Mar 19 2023, 09:20 PM
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#1
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Member Group: Members Posts: 97 Joined: 27-December 22 From: Los Angeles Member No.: 27,063 Region Association: None |
So I'm trying to resurrect this 76 (or is it a 75?) that I just bought and it doesn't have compression on the #4 (rear right) cylinder. After some tests with compressed air it's clear that the intake valve isn't closing. I pulled the valve cover and the rockers move OK but that valve does not close all the way. Everything else looks good.
I have a lift but was wondering if I could pull that head without dropping the engine. It looks like there is room but I'm not sure about the engine tin etc. Seems like either the valve is bent or somehow stuck and maybe I can just fix the one thing there. Anyone pull heads while the engine is still in the car? |
technicalninja |
Mar 20 2023, 09:23 AM
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#2
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Senior Member Group: Members Posts: 1,197 Joined: 31-January 23 From: Granbury Texas Member No.: 27,135 Region Association: Southwest Region |
SuperHawk- that is BEYOND nasty.
Do people really remove the air flaps for the oil cooler? Drop dead stupid! I'm going to remote mount my oil cooler, remove the flap, and make another by hand to replace what I removed to force all the air through the fins. In the AC world the cleanliness of the heat exchangers is paramount. A system that looks like those engine picks would not work very well at all. I'm in agreement with everyone else- Check valve clearance first but if you don't know the history of the drive train removing it for inspection is a good idea. If it looks like SH's pictures you will save it from destroying itself. Those pictures are what I call a "time bomb"... |
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