Remanufactured 7.4 running rough

MrsRobinson

Active member
Member
Joined
Nov 22, 2005
Messages
1,074
1995 330 Sundancwer with twin 7.4 Jasper Long blocks, 6 hours on each.

Both engines ran smooth first 4 hours. Port engine now running rough for first 15-20 minutes. On start up we see black smoke and what looks like soot in the water at the exhaust pipe. Rough idle, rumblevibration on acceleration. Egnine stalls out at times. Engine runs fine after about 20 minutes.

I am thinking the choke is sticking (carburated) or an air mixture isue, though I am not sure. Opinionsthings to look atadjust?

Thanks
 
Top