After a recent trip to the mechanic I found 2 stripped coil pack holes. I think the holes in the valve cover are stripped.

I'm not getting any misfire codes but the coils are not sitting tight to the plugs.

what would you guys suggest to fix this? I thought about stacking a few washers under the bolt heads just to keep the good threads engaged. You guys have any ideas?

 

You need to describe your truck.

 

this would definitely help.

First thought would be to CAREFULLY put a thread chaser down the hole and see if it can clean up/recut the threads lower down. next step being if theres enough meat to go up a size.

 

my apologies, I totally forgot. It is a 2005 5.4 f150 fx4

 

Which situation do we have?
1) Threaded brass inserts in the intake manifold that are stripped? These use a machine screw.
2) No brass inserts and a screw that threads directly into the plastic material that has stripped out. If this is the case, I would choose the appropriate JB Weld product, fill the hole a re-drill to accept screw. By appropriate I mean one that is suitable for plastic and not necessarily for steel. JB Plasticweld looks like a good choice. There may be other choices out there and others may have a better suggestion.

Your statement "I think the holes in the valve cover are stripped" has me wondering if there actually two issues, please explain.

 

my valve cover is aluminum. There are no inserts that I can see. It appears to be holes that are drilled and tapped right into the aluminum. The holes are definitely what stripped though. The coils themselves have a brass insert but those are not threaded, the bolts pass through those and thread into the valve cover

Would it be better in my case to get a new valve cover, or pull this one and try to fill with jb weld and re drill and tap?

You mentioned 2 issues. What are those?

 

Ok so the issue is with the valve cover and its mounting bolts. I am not familiar with the 5.4 coil mounting and I assumed it was similar to my 4.6. We need others to chime in that are more familiar with the 5.4.

A picture would help.

 

Id still get the current size thread tap and try running it in and see what happens, I've been able to save a few bolt holes this way over the years. if the threads are good at the opening of the hole it's pretty easy to get it started lined up with the existing threads

 

thanks, I'll give it a shot.

 

just make sure you dont go through the bottom of the hole or something, granted doing that by hand seems like it would take some effort and make sure to blow all the crap back out of the hole before testing with a bolt (check the threads on your bolts are in decent shape too)