Backfire - Ford F150 Forum - Community of Ford Truck Fans



Backfire

Reply
 
 
 
Thread Tools Search this Thread
Old 09-22-2010, 06:31 PM   #1
Senior Member
5 Year Member
Thread Starter
 
tdcarter72's Avatar
 
Join Date: Jul 2009
Location: Georgia
Posts: 223
Thanks: 0
Thanked 2 Times in 2 Posts
Default Backfire

The last two afternoons driving home my truck has backfired. My question is what causes backfire? Is this something I should worry about?
tdcarter72 is offline   Reply With Quote
Old 09-22-2010, 07:51 PM   #2
Junior Member
 
Join Date: Sep 2010
Posts: 26
Thanks: 0
Thanked 0 Times in 0 Posts
Default

google backfire
96ford13 is offline   Reply With Quote
Old 09-22-2010, 10:47 PM   #3
Springer Spaniels Rule
 
dirtcrew51m's Avatar
 
Join Date: Jun 2009
Location: Milltown, NJ
Posts: 3,446
Thanks: 0
Thanked 15 Times in 14 Posts
Default

Check timing.
dirtcrew51m is offline   Reply With Quote
Old 09-23-2010, 12:04 AM   #4
Administrator
5 Year Member
 
ymeski56's Avatar
 
Join Date: Jul 2008
Location: Long Beach Calimexifornia
Posts: 33,664
Thanked 895 Times in 506 Posts
Default

Cat causing a back pressure condition, injector hanging open, bad fuel pressure regulator, timing....... I would worry about it.
ymeski56 is offline   Reply With Quote
Old 09-23-2010, 06:42 AM   #5
Senior Member
5 Year Member
Thread Starter
 
tdcarter72's Avatar
 
Join Date: Jul 2009
Location: Georgia
Posts: 223
Thanks: 0
Thanked 2 Times in 2 Posts
Default

Quote:
Originally Posted by ymeski56 View Post
Cat causing a back pressure condition, injector hanging open, bad fuel pressure regulator, timing....... I would worry about it.
Don't have cats, PO cut it off.

I ordered a fuel pressure tester and it should be here anyday. I will check fuel pressure and timing this weekend.

The truck has what I think is a fuel problem. It skips/surges under any touch of the gas.


Thanks for replys guys!
tdcarter72 is offline   Reply With Quote
Old 09-23-2010, 02:00 PM   #6
Administrator
5 Year Member
 
ymeski56's Avatar
 
Join Date: Jul 2008
Location: Long Beach Calimexifornia
Posts: 33,664
Thanked 895 Times in 506 Posts
Default

Quote:
Originally Posted by tdcarter72 View Post
Don't have cats, PO cut it off.

I ordered a fuel pressure tester and it should be here anyday. I will check fuel pressure and timing this weekend.

The truck has what I think is a fuel problem. It skips/surges under any touch of the gas.


Thanks for replys guys!
Hate to start w/ the completely mundane, but fuel filter?
ymeski56 is offline   Reply With Quote
Old 09-23-2010, 03:12 PM   #7
Are my eyes red?
5 Year Member
 
94Bronc's Avatar
 
Join Date: Jun 2010
Posts: 1,111
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by ymeski56 View Post
Hate to start w/ the completely mundane, but fuel filter?
i think i've recommended fuel filter changes to like 20 people on the forums. its cheap easy and quick and actually helps with more problems than people seem to think until they actually change it
94Bronc is offline   Reply With Quote
Old 09-23-2010, 06:05 PM   #8
Senior Member
5 Year Member
Thread Starter
 
tdcarter72's Avatar
 
Join Date: Jul 2009
Location: Georgia
Posts: 223
Thanks: 0
Thanked 2 Times in 2 Posts
Default

I not saying its not the fuel filter, but I did change it about 3 weeks ago when I started down the EGR valve road.

I really think its going to be a fuel regulator or maybe a injector problem. I won't know anything else until I can test the fuel pressure.

Thanks for the replys guys! will let post the results of my fuel pressure test after I get it done.
tdcarter72 is offline   Reply With Quote
Old 09-23-2010, 09:41 PM   #9
We'd do it
5 Year Member
iTrader: (1)
 
Just call me Sean's Avatar
 
Join Date: May 2008
Location: Orlando,Fl.
Posts: 32,625
Thanked 421 Times in 377 Posts
Default

If the smog pump valve is malfunctioning it can cause backfiring too. So will exhaust leaks.
Just call me Sean is offline   Reply With Quote
Old 09-23-2010, 10:05 PM   #10
Administrator
5 Year Member
 
ymeski56's Avatar
 
Join Date: Jul 2008
Location: Long Beach Calimexifornia
Posts: 33,664
Thanked 895 Times in 506 Posts
Default

It's a 302 by the way. You may see excessive fuel pressure, or pressure quickly dropping after the engines shut off.

First would be the regulator (sometimes you'll see fuel when you remove the vac hose).
http://www.fordfuelinjection.com/?p=41

Second would be injectors failing to seat closed.
There used to be a great injector cleaned that was in an aerosol can. It screwed right onto the needle valve on the injector rail. I think NAPA carried it. You could always run a can of Seafoam in the gas. Or Lucas injector cleaner.

Last edited by ymeski56; 09-23-2010 at 10:08 PM.
ymeski56 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Idling/Stalling issues FiveLiter 8 Cylinder Engines 1 09-29-2015 06:48 PM
2.7EB vs EcoDiesel NamedPeril 2015 - Present Ford F150 11 09-09-2015 02:08 PM
2005 F150, Sluggish and backfires when cold chrishope 2004 - 2008 Ford F150 0 01-31-2011 10:05 PM
1992 5.8l runs rough, backfires TexasRed 1987 - 1996 F150 2 05-07-2010 08:38 PM
knocks and backfires carlf Engine / Drivetrain Talk 2 01-01-2008 10:43 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 10:36 AM.


Copyright 2006 - 2016 F150Forum.com