Please Help, Just Pulled Motor Apart And Now Ive Got A New Problem

BowTie Eater 5 Liter · 10-18-2006, 04:00 PM

when i start the car it instantly revs to about 3000rpm. im thinking vaccum leak, but im not 100% sure.

i didnt use any silicon or any sealer on the intake gaskets(from heads to lower intake) could that be a problem? i did last time but forgot to this time.

any other thoughts?

rwhite65 · 10-18-2006, 05:54 PM

If this revving problem just started after you did the gasket change, I would have to suspect a vacuum leak. Did you use a torque wrench?

PKRWUD has posted some great posts regarding checking for vacuum leaks, if you cant find them I have them saved to my hard drive at home.

BowTie Eater 5 Liter · 10-18-2006, 09:13 PM

the intake wasnt seated properly and was sucking air from the lifter valley, all is good now though

10-18-2006, 04:00 PM	#1
BowTie Eater 5 Liter Registered Member Join Date: Nov 2000 Location: Maple Ridge B.C. Canada, The Best Place In The World Posts: 871	Please Help, Just Pulled Motor Apart And Now Ive Got A New Problem when i start the car it instantly revs to about 3000rpm. im thinking vaccum leak, but im not 100% sure. i didnt use any silicon or any sealer on the intake gaskets(from heads to lower intake) could that be a problem? i did last time but forgot to this time. any other thoughts? __________________ 1984 Bronco II, 36" Michelin Military Tires, 95 EFI 5.0, NP435 Tranny, NP208 Doubler, NP205 Transfer Case, Fill Size Solid Dana 44 Front End, WH Progressive Rate Rock Crawling Coils, Bronco 8.8 Rear, Skyjacker Softride Leafs, 5.13 Gears, Detroit Locker. Final Crawl Ratio Of 175:1 88 GT Best 60ft. 2.181 Best ET 14.350 Best MPH 98.01 ~WRECKED!!!!~

10-18-2006, 05:54 PM	#2
rwhite65 Ride Hard Join Date: Oct 2000 Location: Wyoming IL Posts: 1,094	Re: Please Help, Just Pulled Motor Apart And Now Ive Got A New Problem If this revving problem just started after you did the gasket change, I would have to suspect a vacuum leak. Did you use a torque wrench? PKRWUD has posted some great posts regarding checking for vacuum leaks, if you cant find them I have them saved to my hard drive at home. __________________ 65 Fastback 91 roller 306, H/C/I AOD-Bauman, PI Stallion, 4.10's and traction loc 04 Grand Cherokee Freedom Edition 79 Ford F-250 4x4 - Restored

10-18-2006, 09:13 PM	#3
BowTie Eater 5 Liter Registered Member Join Date: Nov 2000 Location: Maple Ridge B.C. Canada, The Best Place In The World Posts: 871	Re: Please Help, Just Pulled Motor Apart And Now Ive Got A New Problem the intake wasnt seated properly and was sucking air from the lifter valley, all is good now though __________________ 1984 Bronco II, 36" Michelin Military Tires, 95 EFI 5.0, NP435 Tranny, NP208 Doubler, NP205 Transfer Case, Fill Size Solid Dana 44 Front End, WH Progressive Rate Rock Crawling Coils, Bronco 8.8 Rear, Skyjacker Softride Leafs, 5.13 Gears, Detroit Locker. Final Crawl Ratio Of 175:1 88 GT Best 60ft. 2.181 Best ET 14.350 Best MPH 98.01 ~WRECKED!!!!~