slight backfire on deacceleration

[edindude]

what makes the car backfire on deacceleration its sounds good but worried incase its a fault

[Cammy]

your putting more fuel in because your flooring it, and its not all getting burnt and the cat cannot dense it all up - so it goes it ignites in the center section resulting in a backfire

if ive put it right or said it wrong i unno lol but i know its because of too much fuel exiting the engine

My motorbike used to do it everytime i changed gear or come off the acceleration, not little pops either.. was just awesome lol pin the throotle *change gear* Bang, pinned again, change Bang come off popopopopop lol sometimes spat a flame without intending and then i killed it by wrecking all the callipers and starving it of oil (even though it was topped up all the time, it never actually whent round the engine :( dont know why, some cunt had stole my oil cap and maby threw stuff in there? :( lol

[edindude]

lol that would explain why a 1.1 drinks like a 1.6 ha ha bit heavy footed

[Sparco_Tom]

lol you must be heavy footed

[edindude]

its not that im heavy footed tried it today checked all the plugs they seem dry and white????? so its not flooding how do you check the timing

[edindude]

any ideas folks

[RichM]

What mods you got done to it?

[edindude]

thats just it lol its standard

[RichM]

I would say overfueling aswell but the sparkplug condition you described says its not.

[edindude]

its a bugger cos i like it but i dont cos looks like a fault

[chris84]

u shure its not got a de cat on it? a 1.1 back firing totaly standard, never herd of that b4. its all about the backpressure

[edindude]

its a standard vts/vtr box on it so could that cause it

[beardy]

its a standard vts/vtr box on it so could that cause it

Your car is still injecting fuel that is not been burnt, and igniting in the exhaust.

As long as you aint getting detenation, your engine wont suffer.

[edindude]

so would redex sort this or is it new injecters

[GTJames]

Sounds odd for you to be able to here it when its a standard 1.1. Must be shed loads of fuel being pumped in there. Sounds like its ECU could be getting the fuelling wrong tbh.

[edindude]

how much will a ecu cost and is it a straight swap

[141chris141]

i have a ful s/s system front front 2 back including decat and if i let my foot off 2 change gear or jus give it a rev it backfires like mad!

[Thunderz]

i have a ful s/s system front front 2 back including decat and if i let my foot off 2 change gear or jus give it a rev it backfires like mad!

This is because of your exhaust, you are getting a weak fuel mixture.
This is very damaging to your engine e.g crank and pistons.

[GTJames]

Thunderz hit the spot there i'm afraid. And edindude best to get your ECU checked out by someone qualififed before you search for a new one. Could be the mapping is out on it.

[DaN90]

This is because of your exhaust, you are getting a weak fuel mixture.
This is very damaging to your engine e.g crank and pistons.

LOL not so good now and btw mate i have got the same setup and mine doesnt do that only when im driving enthusiastically.:y:

[edindude]

so could this be costly what should i do lol