440 smoking at start up

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440 smoking at start up

Home > Discussion Forum > Mechanic's Corner - Engines

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All Messages in Thread	Author	Date
440 smoking at start up	Glen	7-15-06
Hi, We have a 1978 Beaver MH 47,000 mi. it has a 440 in it.It smokes alot when you first start it up and tapers off to not much. Someone following dosn't notice it smoking. Any ideas what it might be and how to fix it? Thanks Glen
Re: 440 smoking at start up	mike e	7-15-06
Sounds like you may need new valve stem seals.Or maybe running to rich when cold.What color is the smoke.????
Re: 440 smoking at start up	Glen	7-16-06
The color is blue and it leaves black soot on the ground at the exhaust pipe.
Re: 440 smoking at start up	bill	4-11-07
GLENN..I WAS HAVING PROBLEM WITH THAT ON START UP. IT WOULD RUN ROUGH AND SMOKE UNTIL IT GOT WARM. THIS OLDER MECHANIC SAID TO CHECK THE VACUUM. SAID SOMETIMES IT STICKS. TOU CAN TAKE TUBE OFF AND BLOW AND WATCH IF THE RUBBER SEAL OPENS AND CLOSES. MINE DID NOT. I REPLACED, RUNS FINE. THE VAC IS FROM INSIDE MH OVERLOOKING ENGINE CARB ON THE RIGHT BACK SIDE BOTTOM OF CARB. VERY INEXPENSIVE. DON'T KNOW IF HELPS OR NOT. BILL,III
Re: 440 smoking at start up	blue dart	2-10-07
Yep, sounds like valve stem seals. swing by my place, i'll help you put some new ones in.it's not hard, you need a compressor with a fitting for the spark plug hole, or you can shove some rope in the spark plug hole. to prevent the valve from falling in. email me if you want, i'll walk you through it. it's really not hard to do
Re: 440 smoking at start up	rhio nelson	12-16-07
My 1977 440 dodge enginge does the same thing on the passenger side. How do I replace the valve stem seals. I have a book but it looks confusing. I have a new air compressor and fairly good mechanics skills. Any help would be appreciates.