89Hatchback

Hey guys I have a question I was gunna remove my smog pump yesterday but ran into a problem. I read on a post that the holes on the heads could be plugged with two 5/8 course thread bolts well turns out that they were too big. Does anyone know how big these hole are? and also what do should I use to cap off the vaccuum lines? Thanks

88BlueGT

just go and buy a bunch of bolts and see what fits. I forget what size I used but I got the information from a tech article. Anyway, I got the right thread/bolt size but I couldnt find the right length so I had to cut the bolts down. Try and stay away from this, it makes a complete PITA job already much worse. I'll try to find that tech article that I used for ya.

AdderMk2

5/8-11

they arent too big

88BlueGT

yea, i'm pretty sure thats what i had to use, it sounded familiar i didnt want to give out bad info though lol

89Hatchback

Thanks for the info I tried a 5/8 bolt but it just seemed way to big I give it another try though.

AdderMk2

you probably have alot of carbon built up in the passages. take a battery terminal bottle brush and some carb cleaner to them.

stackz

you can also buy the ford sink-bolts straight from the dealer...

F4ZZ-6E086-A

5.8"-11 x 7/16"

camaroeater

There was too much carbon to plug the heads when I did this. The metal line that goes to each head was completely clogged on one side. I ended up plugging them w/ the quick dry JB weld.