Twisted

Has anyone ever had to re-torque their lower intake manifold bolts for any reason? Are these liable to loosen over time? I'm talking about my stock intake, by the way. Thanks.

XSRACINGGT

I had never had problems with mine backing out or breaking loose or anything.

Twisted

Thanks, XS. Anyone else?

luckythirteen13

ive never retorqued mine.

tjmon1

I have never had to retorque mine neither.

88BlueGT

Me either.......

Twisted

Fair enough. At any rate, last night, I removed my upper intake and re-torqued the bolts to my lower. It was no small task, and mywig goes off to anyone who has changed their intake...let alone their heads. I did this to try to cure some pinging that I've been having. About half of the 12 bolts were considerably loose. While I had the upper off, I hit it with a whole can of carb/tb cleaner, as it was quite foul inside. Then I emptied another can of carb cleaner into the lower intake runners, which were equally filthy. I flooded the runners and open cylinders pretty good with the stuff, and then bolted it all back together.Needless to say,starting the car afterwards was interesting, to say the least. I drove the car briefly last night, and gave it a sound thrashing. It seems to run better overall, even though the computer is still pulling itself together. I didn't hear any pinging when I trounced the car; although it was nighttime, and not very warm outside. Then, in the middle of running the car pissless, I lost oil pressure. I shut the thing down immediately, and pulled to the side of the pitch-dark mountain road I was riding on. I whipped out a flashlight and popped the hood, and was relieved to see that my oil pressure sensor wired had popped off. I stuck it back on and went home. Anyway, I'll keep you guys posted on the effects as they unravel over the next week or so. Later.

Also, I recommend an oil separator to every 5.0 owner on here. Peering inside my intake was horrific.

90GTDan

A lot of what you are seeing is the results of the EGR.

Twisted

Thanks, GTDan. I agree; although I could see pretty clearly which was oil and which was carbon from the EGR. No doubt, the EGR helps to bake the oil onto the insides of the intake though.

90GTDan

Yeah, dry intake tract + pcv + egr = black gew, ewww.