ZUKIWORLD Online | Suzuki 4x4 Editorial and Forum
ZUKIWORLD Discussion Forum => Suzuki 4x4 Forum => Topic started by: eschneider on May 19, 2007, 11:31:12 AM
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Okay kids, anyone seen this before?
1992 Tracker, 200K miles. Running rough. Dad drove the car probably 200 miles before I got there to do a tune up.
Compression test = 155, 0, 165, 165. #2 cylinder nada, nil, zip. Wet test on #2 brought it up 30# on 1st try, 10# 2nd try (30 seconds later), 0 3rd try (another 30 seconds later)
Pulled the head. Cylinder walls had NO scratches (I was impressed for a 200K mile engine!!!!). Rings hold a puddle of carb cleaner overnight (no leakage past rings). with 0 compression, there should have been a dropped vlave or a hole in the piston.
Machine shop found nothing with the head. Pressure test was OK (slight leakage on #3 and #4 valves, #2 was perfect they said. No warpage.
i could not see anything wrong with the head gasket, but they don't always show when they leak. But 0 compression caused by a head gasket???????? There should have been some compression loss certainly, but ZERO????
Ideas? Input???? I'm gonna try bolting it together with a new head gasket and check compression this weekend, but I'm totally mystified.....
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Normally I would say you have a bent valve, but it sounds like the machine shop checked it out. Sounds like a real puzzler... I guess try the head gasket and cross your fingers!
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That is a mystery all right. You seemed to have checked everything I would think of. Let us know what you find. Could the rockers be stuck holding a valve or two open?
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did you adjust the valves? Mine was doing the same thing and the exhaust valve had tightened up to the point it wasn't closing all the way!!!
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I have seen a situation that was very similar to yours,and even though it would hold fluid,it was still a ring.It is much easier to hold the carb cleaner than compression.
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update - it was the head gasket.
I'm really impressed with this little motor. I've abused the hell out of it. 200k miles and the cylinder walls looked PERFECT. not even a ridge. parts for the whole jobs were less than an intake manifold gasket on a GM3.1L. Took less time, too.