tightened my lower intake manifold bolts last spring to cure pinging in my Explorer. Since it seems so common on these engines, I decided to tighten them again yesterday as a matter of preventive maintenance. I was a little surprised; only two of the bolts were still at spec, and three or four were quite loose after 10k miles. If you don't already, you may consider making this a routine procedure.

Yep, I've got this on the list. After reading your post, Mr Shorty, I'm thinking about using a little Lock-Tite on the bolts. Any reason not to use Lock-Tite on intake manifold bolts?

Since this is such a problem, looks like Ford would have used a thread locker on these at the factory.....

not that i can think of.... just dont use too much...

__________________

'98 Ranger XLT 2.5L 4cyl 4x2
3'' Pro comp suspension lift w/ pro comp ES9000 shocks, 31/1050r15 pro comp AT's, Python Alarm, Dual 40's series Flowmasters, KKM Cold Air Intake, JDM Black Euro Tails, Black Smittybilt Roll bar, housing 2 hella 500 driving lights, Pro Comp Push Bar w/ 6" Pro Comp Stainless 130w spotlights, Passport 8500 Radar Detector, Black Steelhorse Steps, 2 10'' Solobaric L710's, devouring 1750 watts, MTX door speakers, Panasonic head unit Sirius Satellite radio, lots of neon... etc...

http://home.mn.rr.com/t1camp1/Focus.swf

THATS THE BEST WAY REALLY SO IF YOU DECIDE TO DO SOMTHING AGIN THAT REQUIRES TAKING IT OFF THE BOLTS WONT SEIZE IN THE MANIFOLD

__________________
1999 exploder sport dropped on 20"
still hear me commin up the block