Drinking Problem

[Shortdog]

Don’t give up on the dog yet.

If it’s not knocking, smoking, or dripping, give the STP and detergent oil (20w-50) a chance. MMO in the cylinders (spark plug holes) before you change oil, let it sit for a couple of days. Frees up rings. Than change the oil.

MMO in gas also.

Cheap way to check it out.

I'm not going to give up on it. Runs too good. The adapters should be in tomorrow and I can run a compression check on it.

 

[100IH]

Good choice, attempt to find the cause, at least get baseline data. then make an educated move. Don't change anything until your'e somewhat sure which way to go. When you do make a change only do one thing at a time. its all about divide and conquer or eliminate the possibilities.

 

[Synchro909]

Good choice, attempt to find the cause, at least get baseline data. then make an educated move. Don't change anything until your'e somewhat sure which way to go. When you do make a change only do one thing at a time. its all about divide and conquer or eliminate the possibilities.

That's good advice and please get back to us with results.

 

[GPierce]

I had an engine drinking oil but excellent compression. Pulled a piston, the oil control ring was stuck tight. The compression ring groves were clean the rings were free. All four pistons had stuck oil rings. Evidence of lots of blowby on the valve guides. I think the soot from the blowby gummed up the oil rings.

 

[1931 flamingo]

Where's the oil going?? If I remember you said not leaking, not out the tailpipe, no blowby??
Paul in CT

 

[100IH]

I don't think that any leak down test can pinpoint air past the rings vs. air going through the guides. rings are by far more likely. Snap throttle test same thing, can't tell anything more than it is sucking oil in hi vacuum. I bet the external leakage is more prevalent on the road hot. Test: put a can under it and wire it in place. This would work if the leakage is at the cotter pin hole on flywheel housing. Not so for cam hole leaking directly out to the RH side exterior.

 

[Halswell]

Years ago I had an A engine that drank oil like that. When I finally pulled it apart I found it had a Gudgeon Pin score down the side of one of the cylinders. Happy Motoring.

 

[Tom Wesenberg]

Years ago I had an A engine that drank oil like that. When I finally pulled it apart I found it had a Gudgeon Pin score down the side of one of the cylinders. Happy Motoring.

About 10 years ago I bought a perfect running Model A engine with no blowby, and no smoke. When I removed the head I found all 4 cylinders had wrist pin grooves on both ends. Sure would have expected lots of smoke and blowby for all those 8 deep grooves.

 

[ronn]

shift to 3-2 beer!