tempaz |
11-25-2013 09:13 PM |
1995 5.8 valve setting issue
I'll try and be brief and to the point as possible. 1995 Ford F250, 5.8w motor. I acquired a bad miss and found I had 0 compression on the left front cylinder. After I pulled the head I found a chipped valve and replaced it. I pulled the other head off to replace the gasket while I was in there. I put the heads back on, torqued the rockers to 18 foot pounds, immediately after did a compression test to see if I had any compression problems with my job. Only to find that a few of the cylinders had 100-115 pounds compression while others had 150. I loosened off the rockers and found that those weak cylinders jumped to 150 psi. SO obviously the valves are set too tight, however, I don't know why. My only theory is, that the lifters are not giving at all. I started to check them by disassembling them and found that they were sticking/seized. Could that be my problem with the valves being set too tight, or are they supposed to be almost impossible to collapse when they are charged? I put a hell of a lot of force on a couple to try and get them to collapse while charged and they didn't budge. HELP?
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