My 2 occasionally backfires and hesitates when coming on boost at WOT. After it's done it, it won't do it again for a while. I've noticed it's usually when I've not driven on boost for a while, any light shed on the matter would be really helpful, I'm not sure where to start.
Dan.
Backfire under load
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Re: Backfire under load
I would start from ignition components like spark plugs, dizzy cap and rotor arm, spark plug wires.
Re: Backfire under load
What boost are you running ? If standard i would be looking at spark plugs and checking the dizzy and rotor arm for wear first.
Re: Backfire under load
Running 1.0 bar but it backfires before I reach full boost. I've had ignition parts replaced not long a go, maybe 5000 miles a go. Do they tend to go that quickly ?
Dan.
Dan.
Re: Backfire under load
Then next parts to replace - coil and igniter probably.
But you say it's backfiring not always? Then this is strange.
But you say it's backfiring not always? Then this is strange.
Re: Backfire under load
Yeah it's not consistent, it might not even be backfiring as such, just sounds like it. It tends to do it when I've been driving off boost for a while then I put my boot down. It gets spooling then bangs once or twice hesitating when it bangs. Then all of a sudden it'll shoot off. I'll try get a decent coil and igniter off a friend and try them for a few days and see how it goes.
Another thing I've just remembered is that it started happening after I washed the car. So possibly water ingress into the engine bay on something electrical?
Dan.
Another thing I've just remembered is that it started happening after I washed the car. So possibly water ingress into the engine bay on something electrical?
Dan.
Re: Backfire under load
Don't the coil pack suffer from water ingress where they crack