have back pressure coming threw vale cover ring or good what do I look for next all lines or open

Asked by Apr 12, 2015 at 07:32 PM about the 1993 Ford Tempo 4 Dr GL Sedan

Question type: General

blowing oil back threw  vale cover ring or good pressure good  don't know why the pressure coming threw vale cover  check all the line they seem not to be clog don't know what to look for next  run good it never ran on the high way but I don't want to ta
ke  chance on blow the engine

2 Answers

8,150

A 20+ year old tempo ? really ? crankcase vent, pcv excessive? Are the parts still where they were made to be ? The pcv pulls vent pressure into the intake via a hose. Does the valve have movement inside when shaking it ? Does it have rpm drop when remove the valve from the valve cover grommet and block it ? Crankcase pressure comes from combustion pressure. If it is too excessive to be handled normally? Throw that car in the dumper. If it is your project show car, well I suppose you can get an engine from the u-pull-it yard for 100 bucks. If you buy it stripped

8,150

Oh, another idea, does it have a motorcraft pcv valve ? the other kinds for sale at parts houses cause odd runability sometimes. You can look for one when looking for the rest of your stuff at the yard. You need one that is not plugged up and seals one way, and allows flow the other way. it stays hung because of its calibrated spring, you can hear its piston when shaking it.

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