Backfiring - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

fte22 · 04-02-2003, 16:27

For the first time ever, my AU dual fuel (Tickford Gas) backfired last week. The system was supposed to have been serviced 3,000km ago (at 80K) and it happened on a day that I was running it on petrol (about 30km) and before that on gas (for about ~700km). I stopped at the servo to fill up the gas, and as I was leaving, the car back fired. A few km before the servo, I flicked it over to LPG, so that day it was 30km or so on petrol then 2km on gas. What does this backfiring mean? It only happened then so not too sure what I should make of it. Any help on what it could be would be good :) Cheers

maco65 · 04-02-2003, 21:00

You might want to check you plugs and leads. Thats what I have noticed with my taxi's. Usually when they start to backfire on gas and definatly on petrol I have to change the plugs and leads. If it stops it from happening again then the problem is fixed. If it still runs like shit on gas and continues to backfire, I take them in to get a diagnostic done on the gas (AU Tickford dual fuel). The EL factory dual fuel i can tuneup and adjust at home.

Alex

taximan · 04-03-2003, 04:59

plugs or leads,backfiring is caused by an electrical problem resulting in spark jump

AUForte · 04-03-2003, 05:08

My AU (Parnell Dealer fit LPG) did that, a new set of Plugs and leads fixed it

fte22 · 04-03-2003, 16:37

Thanks guys, the thing is I paid to get the gas serviced only 3,000kms ago, shouldn't these things have been changed then? I wouldn't have a clue how to do it :( Hasn't done it since so I will probably just leave it and run it more on petrol. Cheers guys

taximan · 04-04-2003, 04:25

In 20 years of running gas cars I still don't know what a gas service is or why people pay for one.As for running it on petrol why did you get a gas car? If you ignore the warning sign of a backfire you could end up blowing apart aircleaner box,air intake tube,pcv valve etc.Cheaper to replace plugs or leads

04-04-2003, 04:30

Anyone have a pic of a blown up intake system. LOL

ebxr8240 · 04-04-2003, 05:58

Quote:

Originally posted by svoghia
Anyone have a pic of a blown up intake system. LOL
----------------------------------------------------

Sometimes it doesn't stop at just the inlet. Think Bathurst a few years back.. Allen Jones... petrol but results same.

creature3 · 04-06-2003, 22:33

Backfiring on gas is caused by either defective spark plug leads, and/or defective coil pack. The two are easy to replace, and don't cost an awful lot. You could probably do both for maybe$100., and would take maybe 30 mins to replace, once you have the car jacked up.

Yes, backfiring is detrimental to your car's health, and should be looked to as soon as possible. As for spotting these things at a service, sometimes it is only one lead, and the service chappy needs to put an ohm-meter over all of them. Time consuming and costly. It is probably cheaper to replace the leads, but make sure they are good ones.

maco65 · 04-07-2003, 03:15

Quote:

Originally posted by svoghia
Anyone have a pic of a blown up intake system. LOL

Don't have picture of one, but I could look around my rubbish, I mean my shed and see if I can find one from and EF or EL and post it too you.

Somtimes they make a pretty mess, especially if you have used some silastic to "bond" some things together on the intake system.

Alex