kevin_boutwell
New member
"Just installed a new long blo
"Just installed a new long block 4.3L. I was breaking the engine in and everything seemed to be going O.K. After 45mins it started to sputter at 3500rpm it would drop to about 3000. The more gas I gave it the worse it got. Before the new long block installation, this happened and I replaced the old fuel pump and it fixed the problem. The timing is good just checked it today...any ideas."
"Just installed a new long block 4.3L. I was breaking the engine in and everything seemed to be going O.K. After 45mins it started to sputter at 3500rpm it would drop to about 3000. The more gas I gave it the worse it got. Before the new long block installation, this happened and I replaced the old fuel pump and it fixed the problem. The timing is good just checked it today...any ideas."