Rough idle due to leading intake manifold gasket on Isuzu Trooper

Problem Description and Possible Solution

A rough idle may develop which may or may not cause the Check Engine Light to come on. This issue is commonly caused by a failed intake manifold gasket which will require replacement.

Problem Data
RepairPal Verified
Average mileage: 118,505 (40,000–162,000)
Engine affected: 3.5L V6
4 model years affected: 1999, 2000, 2001, 2002
10 people reported this problem
Viewing 1 - 3 of 3 comments
It has a rough idle when first started. Once its warmed up, it seems ok. It is using more oil than usual. The miles per gallon is down a bit. Lately it has been a bit gutless on hills.
diagnosed when check engine light came on. Should be covered under warranty 10/120 for original owner I'm told. Also told to have dealership do oil consumption test for drain back holes.