The Ford Barn

Ratatat · 12-06-2015, 09:35 AM

Well, I bought my first model a with the 4 cylinder motor. It was built to run in The Race of Gentlemen. Rebuilt motor, new wiring, interior, brakes etc. I received it last Thursday. Met the shipper at a more convient place and drove the car home. It started right up but on the way home it was missing and backfiring and emitting blue smoke. Couldn't really dial it in to smooth it out. Pulled the plugs and the front three were really oil soaked and the last had some carbon build up but not wet. The ad stated the motor had been gone through and by appearances it had but I really don't know to what extent. I emailed the seller but haven't received word back as of yet.
The motor has a downdraft intake with a 94 carb, Red's headers and still has the spark advance and throttle which still function, and has a choke conversion instead of the idle mixture.
Obviously the only thing I can think of is that oil is bypassing the rings. Now is there another reason that the oil could be bypassing the rings other that bad rings or the cylinders are oval instead of round. Is there something that could be creating too much pressure to be forcing the oil past the rings.
I really like the car and enjoyed the short drive that I was able to take in it.

12-06-2015, 09:35 AM	#1
Ratatat Senior Member Join Date: May 2010 Location: Nor Cal Posts: 377	First 4 banger, a 29 roadster having problems. Well, I bought my first model a with the 4 cylinder motor. It was built to run in The Race of Gentlemen. Rebuilt motor, new wiring, interior, brakes etc. I received it last Thursday. Met the shipper at a more convient place and drove the car home. It started right up but on the way home it was missing and backfiring and emitting blue smoke. Couldn't really dial it in to smooth it out. Pulled the plugs and the front three were really oil soaked and the last had some carbon build up but not wet. The ad stated the motor had been gone through and by appearances it had but I really don't know to what extent. I emailed the seller but haven't received word back as of yet. The motor has a downdraft intake with a 94 carb, Red's headers and still has the spark advance and throttle which still function, and has a choke conversion instead of the idle mixture. Obviously the only thing I can think of is that oil is bypassing the rings. Now is there another reason that the oil could be bypassing the rings other that bad rings or the cylinders are oval instead of round. Is there something that could be creating too much pressure to be forcing the oil past the rings. I really like the car and enjoyed the short drive that I was able to take in it.