Engine/Transmission (1994 - 1998) Threads for AFC mounting screws

[RWorth]

Pulled AFC to adjust the fuel plate and notice thread material on the top left screw. Ran a 6mm*1 tap to clean threads and now the screw will not hold.

Anyone else seen this happen? If so what did you do to repair or did you leave it alone.

TIA

 

[KKaufman]

I had the same issue, except with 3 of the 4 mounting screws. Since I didnt want to run the risk of using too big of a tap and possibly damaging any internals, I sent it into a local shop. There they tapped and heli-coiled it pretty much the same I would have. When they were all done tapping, they used JB weld to help seal up the AFC on top of the pump since it was leaking oil from the lack of a good seat on the pump. I may never be able to go in there again, but with a zero plate in there just short of full-forward, I dont think I will need to.

 

[Forrest Nearing]

if it's just the top left, I'd leave the bolt out completely... makes AFC/plate stuff much easier to do not having to fish around/through the lines.



I've run 3 bolts on the AFC on every 12v I've owned and never had any leaks/issues/etc.

 

[RWorth]

if it's just the top left, I'd leave the bolt out completely... makes AFC/plate stuff much easier to do not having to fish around/through the lines.

I've run 3 bolts on the AFC on every 12v I've owned and never had any leaks/issues/etc.

Thanks for the reply. I did check for leaks and found none.

 

[JGK]

I helicoiled mine last fall. Did the 2 holes for the plate at the same time. It seems to me I even stacked 2 coils for the AFC housing because the holes are deep enough, though you can't get the entire second coil all the way in. I just filed it a bit where I wanted it to break off, screwed it in to the top of the first coil, then snapped off the part that stuck out at my filed notch using a pair of needle nose pliers.



As for the upper forward one under the lines, yes it can be booger. I replaced all mine with allen head screws then got a ball-head allen wrench that goes on my 1/4" ratchet. I smoothed off the ridges on the length of the allen wrench using the grinder so it won't chew up the lines.



But realistically, as Forrest said, you can go without that screw just fine and save yourself the hassle.



-Jay

 

[Forrest Nearing]

I had to run an allen head cap screw under the lines on my '97 because the PO had messed up the threads on the lower left hole



I used a t-handled, ball nose allen wrench to access it