Intake bolts tightening
Thread Starter
TECH Addict
Joined: Mar 2013
Posts: 2,628
Likes: 30
Intake bolts tightening I've been having some odd fuel trims at idle and at cold start some rough running. Would start ok and run smooth for about 2 mins then shake for 2 mins until it got into closed loop. I tightened the intake bolts a few weeks ago but it really didn't help.
Yesterday I'm thinking it gotta be a leaking someplace on the intake to make it act this way. When the intake is cold it doesn't seal very well, once its warmed up it moves around and things seal up.
I figured the seals are flattened out and need replacing, BUT just for grins I'll recheck the bolts. ALL the bolts were loose AGAIN, so this time I warmed the engine up and kept going over them until as the engine cooled down over an hr. What a difference, the bolts moved quite a bit more and now the intake is sealing. The cold start shake is gone.
Just goes to show ya this nylon intake needs complete attention if you want to eliminate any problems.
Yesterday I'm thinking it gotta be a leaking someplace on the intake to make it act this way. When the intake is cold it doesn't seal very well, once its warmed up it moves around and things seal up.
I figured the seals are flattened out and need replacing, BUT just for grins I'll recheck the bolts. ALL the bolts were loose AGAIN, so this time I warmed the engine up and kept going over them until as the engine cooled down over an hr. What a difference, the bolts moved quite a bit more and now the intake is sealing. The cold start shake is gone.
Just goes to show ya this nylon intake needs complete attention if you want to eliminate any problems.
