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#241
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Proper alignment of cams to crankshaft timing marks.
Evidence of chain contacting anything else besides it's normal gears and tensioner/s. Drain oil and strain, looking for particulate contamination, metals, chain guide material, etc...stuff that could plug the oil screen. I believe the interference is at the outer edge of the pistons, if so, damaged/pinched ring lands @ the piston outer edges if you remove the head. |
#242
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Been busy.
I pulled the valve cover and the timing chain is loose to the point I can lift it up off the sprocket teeth. Droops below the top chain guide say 1/2 inch or so. The next thing I'm going to is: (And correct me if I'm doing anything wrong plz). 1. Check for loose rockers. 2. Turn the crankshaft to put cylinder #1 at TDC which will close both the intake and exhaust valves. 3. Add air pressure through spark plug orifice and check for air at the throttle-body and exhaust.
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Genesis 6:13 |
#243
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Quote:
Quote:
Quote:
An actual leakdown tester will put numbers to the cylinder leakage. If you've used the leakdown tester on "known-good" engines, you'll have a guide to what's acceptable leakage, and what's excessive. Rings always leak. Valves, castings, and gaskets shouldn't. |
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