engine wont suck air
Thread Starter
|
Senior User
Joined: Feb 2003
Posts: 108
Likes: 0
engine wont suck air (new intake carb cam...)
i recently installed a gt intake, a comp 252H, roller timing chain and holley 600 cfm vac secondary on my 1976 f250 I know i have the timing set right i have fuel and i have spark. I finally found that the carb isnt sucking air through it. The engine ran welll but a lifter stuck so i'm pretty sure my rings are good. Any ideas why its not starting/ sucking air?
Last edited by highrider76; Jun 13, 2005 at 09:59 PM.
Thread Starter
|
Senior User
Joined: Feb 2003
Posts: 108
Likes: 0
engine wont suck air
i recently installed a gt intake, a comp 252H, roller timing chain and holley 600 cfm vac secondary on my 1976 f250 I know i have the timing set right i have fuel and i have spark. I finally found that the carb isnt sucking air through it. The engine ran welll but a lifter stuck so i'm pretty sure my rings are good. Any ideas why its not starting/ sucking air?
Posting Legend
Joined: Sep 2001
Posts: 30,255
Likes: 37
Trending Topics
Thread Starter
|
Senior User
Joined: Feb 2003
Posts: 108
Likes: 0
i did notice that significant amount of air was comin out of the pcv and oil fill holes in the valve covers if that helps, to me it suports the cam timing is off am i right?
what are the chances of a mismatch timing set??
If i need to pull the front apart i think i better pull the cam and reapply assembly lube. How can i tell if i damaged the cam from cranking can i reuse the intake gaskets i just put on??
sorry for the cross post
what are the chances of a mismatch timing set??
If i need to pull the front apart i think i better pull the cam and reapply assembly lube. How can i tell if i damaged the cam from cranking can i reuse the intake gaskets i just put on??
sorry for the cross post
Last edited by highrider76; Jun 13, 2005 at 11:02 PM.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Senior User
Joined: Sep 2003
Posts: 131
Likes: 1
first thing's first
first thing's first, do a compression test, this will tell you if things are ok mechanically. If you lined the timing marks up then you should be ok there. You say a lifter stuck? Lifters should'nt stick. You need to pull you valve covers and with #1 on TDC, and turn the motor over can check you valve events. But first do a compression test. Your intake could be leaking into the crankcase as well. What makes you think your motor is not sucking air, when cranking or what?
Thread Starter
|
Senior User
Joined: Feb 2003
Posts: 108
Likes: 0
Originally Posted by fling
first thing's first, do a compression test, this will tell you if things are ok mechanically. If you lined the timing marks up then you should be ok there. You say a lifter stuck? Lifters should'nt stick. You need to pull you valve covers and with #1 on TDC, and turn the motor over can check you valve events. But first do a compression test. Your intake could be leaking into the crankcase as well. What makes you think your motor is not sucking air, when cranking or what?
the lifter collapsed.
it had a few slightly bent pushrods but all of the rockers were tight except the one with th bad lifter
and the timing chain was pretty loose
when cranking i cant detect any airflow into the carburator
Thread Starter
|
Senior User
Joined: Feb 2003
Posts: 108
Likes: 0
hey guys
it was a timing problem
the cam was off a couple teeth and the dist wasnt advanced enough
thanks for the help
guess thats what i get for working all night and putting the timing set on at about 5:30
it was a timing problem
the cam was off a couple teeth and the dist wasnt advanced enough
thanks for the help
guess thats what i get for working all night and putting the timing set on at about 5:30
Elder User
Joined: Feb 2004
Posts: 835
Likes: 0
From: Fort Rucker, AL
Originally Posted by highrider76
hey guys
it was a timing problem
the cam was off a couple teeth and the dist wasnt advanced enough
thanks for the help
guess thats what i get for working all night and putting the timing set on at about 5:30
it was a timing problem
the cam was off a couple teeth and the dist wasnt advanced enough
thanks for the help
guess thats what i get for working all night and putting the timing set on at about 5:30
Thread
Thread Starter
Forum
Replies
Last Post
Fred Furrer
1983 - 2012 Ranger & B-Series
4
Mar 28, 2015 12:30 AM