A little oil will raise a low compression...but afraid it's asking too much to fix a zero compression
That it is, but for for worn rings. If the rings are melted to the pistons, as it would take for a zero compression reading, the oil will just blow right on by. A zero reading is a sign of pretty significant damage.
So, I got the head pulled off this weekend. It was a lot easier than I was anticipating, short of getting anti-freeze everywhere -_-
I didn't feel or see any scoring in the cylinder walls.
Here are the pictures
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IMG_4623.jpg
IMG_4624.jpg
#7
IMG_4620.jpg
#5
IMG_4621.jpg
#3
IMG_4619.jpg
#1
IMG_4622.jpg
#7
IMG_4625.jpg
#5
IMG_4626.jpg
#3
IMG_4627.jpg
#1
IMG_4628.jpg
I forgot to mention that I dropped the head off at a local machine shop for them to look at and see if it is warped, cracked, etc.
Nothing jumps out at me from the pics...except that you have been getting water in the #5 and 7 holes. If they don't find a crack in the head, then the exhaust valves may be sticking, which would then allow water in from the riser on the intake stroke. It isn't likely a crack would result in 0 compression, but stuck valves could account for it.
The water is indicated by the very clean pistons compared to the normal carbon you would expect, like on the 1 and 3 holes...and also the corrosion on the valve heads. I'm not sure what the goo is on the #7 chamber. Was it hard or soft and gooey?
Hopefully it's just sticking valves, as they are an easy (and relatively inexpensive) fix.
Last edited by CJD; 09-22-2015 at 01:14 AM.
That stuff was soft. Before the overheat, the plug in #7 would always have gunk on it. I figured it was some build up in the chamber that would eventually burn off. Also, the water theory makes sense as the plug was hard to pull out of #7. It had a slight bit of rust on it, I thought it may have just been from a splash of salt water getting on it a while back (the trans cooler intake hose had a small leak and I had salt water entering the engine area, had to limp home)
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I'm thinking I may replace or at least clean the lifters while I have it disassembled
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