Backfire on idle only - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Forum Ford Forum

» Auto Insurance
» Featured Product
ยป Wheel & Tire Center

Go Back   Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Engine Specific Tech > Cleveland Tech
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto Escrow

FordForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 10-17-2003, 23:27   #1 (permalink)
Registered User
 
Join Date: Jun 2003
Location: Perth, WA
Posts: 39
Backfire on idle only

Gday all, ive just recently got me car up and running again after donating $200 to the international carby mechanics fund and ive hit a problem. It is that (hot or cold) the car runs fine when revving and what not, but when idling, it seems to backfire... quite a bit

now im not sure if it was doing this before as its a recent acquirement and, well yeh.

anyone got any suggestions?

btw its a 351 with a 650dp

cheers all
Pinkee is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 10-18-2003, 05:07   #2 (permalink)
Two SC 61's = trouble
 
ebxr8240's Avatar
 
Join Date: Jul 2001
Location: Penrith,nswAus/Morrinville.NZ
Age: 61
Posts: 6,360
Re: Backfire on idle only

Check for inlet leaks a compression test to check for bent valves or burnt, damaged valves.Plugs/ leads and timing perfect??
__________________
Don't be afraid to try something new. Remember, amateurs built the Ark...Professionals built the Titanic!
.
Tuned & maintained by "Peppertree Perfmormance". Dart block, Scat 4340 steel crank, Custom C.P pistons.Oliver rods.. Mal Wood twin plate clutch.. Twin SC61/2's,482 rwkw/ 645 rwhp..
Passengers, myocardial infarction material..
R.I.P Possum...
ebxr8240 is offline   Reply With Quote
Old 10-19-2003, 05:30   #3 (permalink)
Registered User
 
Join Date: Jun 2003
Location: Perth, WA
Posts: 39
Re: Backfire on idle only

well it just had a service so the timing and plugs are good, but ill check the compression asap

cheers.
Pinkee is offline   Reply With Quote
Old 10-19-2003, 05:34   #4 (permalink)
###AND EDGT DRIVER###
 
xf351gt's Avatar
 
Join Date: May 2002
Location: perth W.A.
Posts: 713
Re: Backfire on idle only

if its more of a pop than a backfire me thinks burn valve.

but check every thing ebxr8240 listed
xf351gt is offline   Reply With Quote
Old 10-19-2003, 18:38   #5 (permalink)
Slurry Boostin
 
TTNOS8's Avatar
 
Join Date: May 2003
Location: Lake Entrant, near Bendale
Age: 32
Posts: 1,211
Re: Backfire on idle only

As above, timing.

Also check idle mixtures.

Does it backfire just sitting there, or is it when you start to put your foot down?
TTNOS8 is offline   Reply With Quote
Old 10-20-2003, 00:00   #6 (permalink)
Registered User
 
Join Date: Jun 2003
Location: Perth, WA
Posts: 39
Re: Backfire on idle only

TTN, yes it is only doing it when sitting there but come to think of it, xf is right, its more of a popping sound than anything, i think i will check the valves when i can....

just as an off note, will it be a bad thing to continue using, ie will it do mor damage?
Pinkee is offline   Reply With Quote
Old 10-20-2003, 05:19   #7 (permalink)
###AND EDGT DRIVER###
 
xf351gt's Avatar
 
Join Date: May 2002
Location: perth W.A.
Posts: 713
Re: Backfire on idle only

Quote:
Originally Posted by Pinkee

just as an off note, will it be a bad thing to continue using, ie will it do mor damage?

if its a burn valve or valve not closed due to rocker clearence could check the rocker clearence or wrong pushrod lenth otherwise keep driving it dies thats my moto .

Last edited by xf351gt; 10-20-2003 at 05:23.
xf351gt is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Engine Specific Tech > Cleveland Tech



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Idle Issues SiX_iN_a_RoW Inline 6 Tech 16 05-26-2004 09:10
ED idle crodarian General Tech 4 01-23-2003 21:12
EBII Idle Problem XR6000 General Tech 3 01-14-2003 23:29
rough idle on cpi with new mild cam chargin Inline 6 Tech 2 04-24-2002 22:44

Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 16:37.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.