Strange popping noise coming from engine
Administrator
Joined: Apr 2010
Posts: 87,464
Likes: 4,220
From: Clayton MI
That sounds a lot like an electric clutch, or solenoid..... it only does it once.... (every now and then...) which is going to make it VERY fun to find.
It isn't the purge solenoid is it? Or maybe EGR solenoid? (only if your truck is 95 or older for that one.)
It isn't the purge solenoid is it? Or maybe EGR solenoid? (only if your truck is 95 or older for that one.)
Veteran
Joined: Jun 2009
Posts: 320
Likes: 0
From: up north
I took the belt off for the heck of it just to try it. Also quieter so i could listen better.
I went around the entire engine and re-torqued every bolt. Couple of the intake manifold bolts were only at 5-7ft lbs some reason so i turned them back to 12ft lbs. Everything looks fine. Nothing else loose.
I have determined the noise is coming directly from under the intake manifold. T-stat was changed. Could the plenum plate be making the noise somehow? I torqued the bolts to spec with blue loctite when I did it. The noise didn't start until about 3 1/2 months after the repair. It doesn't seem to affect anything, its just annoying.
I went around the entire engine and re-torqued every bolt. Couple of the intake manifold bolts were only at 5-7ft lbs some reason so i turned them back to 12ft lbs. Everything looks fine. Nothing else loose.
I have determined the noise is coming directly from under the intake manifold. T-stat was changed. Could the plenum plate be making the noise somehow? I torqued the bolts to spec with blue loctite when I did it. The noise didn't start until about 3 1/2 months after the repair. It doesn't seem to affect anything, its just annoying.
You may be on to something with the t-stat but I've never heard it before . What brand did you use ? If a failsafe , I'd swap it .
Record Breaker
Joined: May 2010
Posts: 1,322
Likes: 1
like i said would pull the t-stat out and run it without a t-stat and see if it does it at all, if it doesnt then i guess u know why. replace it.
i dont see anything else that would be causeing it in that area. just sayin
i dont see anything else that would be causeing it in that area. just sayin