Rebuilt 302 problems
Thread Starter
|
New User
Joined: Oct 2003
Posts: 5
Likes: 0
Rebuilt 302 problems
B]I have just rebiult my 302 out of a 92 f150. I upgraded to a Ford Racing E303 cam 10 to 1 compression on windsor heads and some other things but those two are the questions I have it has been run in and the truck acts fine good idle and all that. It occasionaly backfires through the intake but only in gear and not past 1500 rpms. In park or nuetral it doesnt do it unless revved up after sitting a while. Im out of ideas on it and wonder if you guys might have an answer to help.[/B]
Thread Starter
|
New User
Joined: Oct 2003
Posts: 5
Likes: 0
The motor was already roller but I did replace the lifters aswell. I thought about timing too. As best I can tell you the cam was put in right. I didnt degree it in though. I was told that wouldnt matter.
Postmaster
Joined: Jun 2001
Posts: 4,496
Likes: 0
If you put the cam in straight up then that shouldn't be an issue. I would check the timing first get it where it should be if it still persists check for vaccum leaks if still nothing you probably need to adjust the carb. Later and let us know if you find the problem
New User
Joined: Nov 2003
Posts: 19
Likes: 0
i had a similar prob on an 88 bronco 351 if you change the geometry of the valve train and also compression ratio with the speed density the computer has no way of knowing about the change if it was mass air then yes but unless you do modifying tricks with a differnt fuel pressure regulator then there is no way of compensation a mild cam change had a small effect what is your duration.
Trending Topics
New User
Joined: Nov 2003
Posts: 19
Likes: 0
here this is what i was talking about your going to have to change out your fuel pressure regulator it only allows for a predetermined amount of fuel that your original eng would use when you ask for more fuel (cam heads ) then it gives you all it has and does not know how much is really needed so you have to give it an attitude ajustment also mod the comp check this out https://www.ford-trucks.com/forums/a...ic/147272.html good luck laters
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
Thread Starter
|
New User
Joined: Oct 2003
Posts: 5
Likes: 0
Thanks, I have been lookin into an adjustable fuel pressure regulator since I have already had to replace one due to it running very rich. I know I will need one of them and I was figuring maybe a higher stall converter would help it too.