kosienutter

When turning the ignition on (not cranking over) or when the engine has literally stopped there is either one or 2 back fires. Thought something had a monumental blowout under the bonnet lol.
Is it the Wasted Sparks driver seeing the CPS and sending the relevant signal to send a spark to the relevant spark plugs???

Been told someone did something to their wasted spark to stop thisfrom happening.

Any ideas anyone????

BRAMMER

iTrader: (23)

Yep they do it, mine shot a flame the other day as i was turning the ignition on an off for reasons then when i clicked the turn it over it backfires - you will find they do it quite often especially every time you prime but don't start then repeat - it's fine

BRAMMER

iTrader: (23)

Don't know how to prevent it as i just assumed it's just mechanical, you put fuel in then due to the increased spark you get the pop

kosienutter

Cant wait to do it in Tesco's car park then and Granny pushing her trolley, getting a shock when I turn it over lol

KSA-Cossie

iTrader: (4)

Nah you want ALS for scaring grannys lol

kosienutter

lol.

boost mad

iTrader: (8)

Not quite so much fun when it fires into your inlet.

Was talking to Karl about this and said it can cause issues if you have Nitrous and there are traces of it in your inlet system.

cossie891

iTrader: (1)

What surely thats not right that aint good at all

JamesH

iTrader: (21)

I'd have thought there must be a reason for it to do it, or else why would it?

cossie891

iTrader: (1)

Fuck having that then if it does that, that has put me off having it

boost mad

iTrader: (8)

its the coilpack discharging I think.

bad boy rs

iTrader: (7)

if i remember stu told me it can be caused by the way the leads are routed

JamesH

iTrader: (21)

But it would still need to have the pulse from the coil...be interested to know the cause

dazzle740

iTrader: (1)

I would also like to know if this is preventable as it did it to me a couple of weeks ago when I was tinkering and was in the garage made an almighty bang praticually jumped through the f%@king closed sunroof !!!!!!!!!

KSA-Cossie

iTrader: (4)

Simon (secs) explained it but I forgot what it was.

BRAMMER

iTrader: (23)

Well it must have done it hundreds of times on my car over the years and i've never had any issues so their's nothing to worry about your not going to blow up

JamesH

iTrader: (21)

Hardly ideal though is it

boost mad

iTrader: (8)

Its been enough to slightly turn my engine too. Not great when your hands in the engine bay and you ask a mate to switch the ignition on.

cossie891

iTrader: (1)

It defo dont sound good tho

cossie891

iTrader: (1)

Come to think about there are lots of cars with coil packs and they dont do it so why does the cossie?

kosienutter

I shall ask the guy who told me he managed to stop it when I see him next.

alo

I've spoken to a couple of tuners about this.
The pectel anti lag/coil pack board does not seem to do this.No pops or bangs on second stage ignition.
I believe its a bug in the wiring/design for the wasted spark driver which has not been ironed out. who ever designed this will be able to clear this up....As above though really will not blow your car up, just not ideal.

kosienutter

So if you have not got ALS an LC this is more likely to happen? Cause the a for mentioned guy I know did IIRC have ALS and LC. You are right though it won't blow up just shit you up on occasion lol

kosienutter

Which leads, the HT ones or the loom leads???

cossie891

iTrader: (1)

I know it wont blow up or anything but it aint right no matter what and it cant be good for the engine can it

boost mad

iTrader: (8)

I think the ALS AND LC would be irrelivant to this. Its a wasted spark driver issue

BRAMMER

iTrader: (23)

So what is it actually likely do to the engine? wasn't anything wrong with my old one when i stripped it for bit's

daz1968

I have started mine since fitting the kit numerous times hot and cold, not done it yet but at least I will know what it is when it does happen.

bad boy rs

iTrader: (7)

HT leads, im sure this was mentioned when i was having trouble with my msd chip, never moved them so mine bangs occasionaly to

alo

https://passionford.com/forum/genera...0-kit-car.html
Theres a guy with wasted spark in a rs 200. He's blown up two inlet manifolds due to back/miss fires. Read the link above.

I will be sticking to pectel and collins boards for running coil pack and anti lag. I don't think those wasted spark drivers healthy. But if you guys like mis fires....

Cossiemainful

iTrader: (1)

Hi to everyone,

for those with the backfire issue after the upgrade to wasted spark (I don't tested this myself but it's worth trying).
If you have a backfire by turning the ignition on you have to install the supply voltage (coil) not by the ignition lock but rather on the fuel pump relay (terminal 87). Hope this will solve it. Has someone done it with success?