Backfiring and popping...
Thread Starter
|
Senior User
Joined: Jun 2005
Posts: 174
Likes: 0
From: Palo Alto, CA
I installed the performer rmp intake and 670 holley carb. I did install a spacer too. All i did was change the inatake and carb, nothing else. and yeah basically no power when given a little more gas than usual. Any thoughts?
Lead Driver
Joined: Sep 2003
Posts: 5,844
Likes: 6
From: Albuquerque
Originally Posted by bertha66
Run the engine up to TDC and pull the dist. cap to see how it alines with the #1 firing postion.
My thoughts exactly! I am thinking that you could be off just a tooth...which would cause that effect. Also, as simple as it sounds of putting in a dizzy, on the FE (at least all my experience) has proved to be a bit tough at times. Taking multiple times to get it right.
Thread Starter
|
Senior User
Joined: Jun 2005
Posts: 174
Likes: 0
From: Palo Alto, CA
OKAY! So, I know have the timing right on. However....when I did a compression test, I found out that I have ZERO compression in my number 3 cylinder. I'm pretty sure that it's been like that for awhile though. Unless somehow I burnt the valve when I started it up the first time...any ideas on that?
Posting Guru
Joined: Jul 2003
Posts: 1,268
Likes: 0
From: Eureka, Ca.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
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
Postmaster
Joined: Jul 2005
Posts: 3,248
Likes: 0
Diagnosing the problem of the engine backfire
1. First pull off one spark plug wire at the distributor (be carfull not to trap wire on the fan belts or fan blade).
2. Start your engine, rev engine and check of backfire.
3. Turn off engine.
4. Place the spark plug wire back on distributor cap.
5. Continue this procedure one spark plug wire at a time working in a clockwise order on the distributor cap.
When you notice that the engine does not backfire, turn off engine and trace the spark plug wire back to the spark plug on head. You know have located what cylinder is backfiring and on cylinder head side.
Next step, pull the valve cover off the cylinder head where the backfire occured. Inspect the push rod on the cylinder you have located as the source of the backfire (make sure the push rods are not bent). Replace pushrod if bent,
if the push rod is not bent continue to the next step.
Next step, Pull coil wire off the coil on engine or coil wire off the distributor cap. Crank engine and inspect that rocker arms and valves are moving up and down correctly and that the pushrod are not bent.
Continue to https://www.ford-trucks.com/article/...le_Secret.html
2. Start your engine, rev engine and check of backfire.
3. Turn off engine.
4. Place the spark plug wire back on distributor cap.
5. Continue this procedure one spark plug wire at a time working in a clockwise order on the distributor cap.
When you notice that the engine does not backfire, turn off engine and trace the spark plug wire back to the spark plug on head. You know have located what cylinder is backfiring and on cylinder head side.
Next step, pull the valve cover off the cylinder head where the backfire occured. Inspect the push rod on the cylinder you have located as the source of the backfire (make sure the push rods are not bent). Replace pushrod if bent,
if the push rod is not bent continue to the next step.
Next step, Pull coil wire off the coil on engine or coil wire off the distributor cap. Crank engine and inspect that rocker arms and valves are moving up and down correctly and that the pushrod are not bent.
Continue to https://www.ford-trucks.com/article/...le_Secret.html