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1275 Timing Cover Vent

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M

MJinCO

Freshman Member
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On a 1275 has the timing chain cover vent can been known to get clogged with junk and prevent the sump venting properly?
 
Yes. The metal material in there gets gunked up and eventually becomes a big plug. Another issue is from an incorrect valve cover cap that isn’t vented, not allowing air flow into the engine.
 
I've had a continual oil leak problem and suspect this might be much of the cause as I had it happen once on a 924 Porsche. On it the vent went directly into the sump cavity and I couldn't get the fitting out of the block so after draining oil I reverse flushed it several times with a gallon of diesel, it worked perfectly. I'm not sure about that method here considering the diesel would have to go back thru the timing chain galley hole, but probably worth a try rather than tearing apart the entire front end. After doing this it best to get the oil pressure pumped up before restarting.

The PO of this car spent a lot of money on race motor goodies, but ignored some of the basics like a poor block surfacing job and then using a metal head gasket.. Head gaskets lasted about 15 minutes of run time, a composite one worked perfectly.
 
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