I discovered this evening that I am missing an Intake Manifold Cover bolt. Where it went or when, I don't know.

Turns out ALL the Cover bolts were loose. I had the cover off once, over a year ago, and installed the bolts per the Service Manual (tightening order and torque spec).

Should I use a dab of Locktite Blue Threadlocker to keep 'em in place?


.

 

Bump

?

 

normally you go back in 500 miles and retighten any intake or exhaust bolts after working on them
A few heat cycles tends to loosen a few or more~

Loctite would be personal choice- once its on the toque is set- so it better be right

 

by the time to get ready for track day by checking the car over and finding things like this,,the car should run wayyyy better!

 

Can you believe I lost another one of these GD bolts?

After discovering the first one missing and all the rest loose. I replaced the one and tightened all the others.

Couple of days later, checked 'em all - still tight.

Then yesterday, one is missing.

WTF??

 

That's weird. Any chance they're bottoming in the holes and not clamping down on the manfold completely?

What type of gasket/did you reuse the old one? Any polishing done to the manifold?

A dab of blue won't hurt anything but all you need is just a single drop.

 

I don't think they are bottoming out. They call for pretty light torque, ~9 ft/lbs, just beyond hand tight. I know I could wrench them down more, so they are not bottomed out. And they are not over tight either - hand tight, then just a little pull with the wrench.

Last year, when I changed the Intake Manifold Gasket, I re-used the cover gasket.

No polish - just the stock cover. I am going to go through and put some Locktite Blue on them. One of those bolts get's tossed into a spinning part (fan blade, belt, etc) and I don't think it'll be a good thing.