paddy heffernan

right guys ive a problem with 3 door cossie ,when it gets up to temp say warm enough for fans to cut in engine starts to backfire and splutter. ive changed water temp sensor ,air temp sensor,crank sensor ,phase sensor,leads plugs etc.i put a strobe light on car tonight and found that when i rev car slightly timing moves a couple of degrees which is fine but when i rev car timing jumps a couple of inches every few seconds.what can be causing this to happen.

mark r

id say maybe ur dizzy is fucked

paddy heffernan

dizzy is also new and car only plays up when warm

botters

iTrader: (2)

have you set the gaps on the phase and crank sensor?

paddy heffernan

set gaps on phase sensor.crank sensor is fixed has no adjustment i think.problem only happens if car gets warm .if your on open road driving fairly hard it is no problem but if you get caught in traffic or leave to tick over problem starts

paddy heffernan

i would like to swap ecu so is this simple or would i have to change ignition imobilosir etc

cossiedad

Crank sensor is adjustable. Need to use feeler gauge and if I remember correctly it is 0.5.
cheeRS

cossiedad

And you can simply switch an ECU over.
cheeRS

paddy heffernan

thanks for that i must try swap ecu with mates one see will it sort problem.i taught it was matched with imobilisor

paddy heffernan

Problem sorted plug gap too big .man this took forever to find . I've changed everything else possible .

s11nmg

What gap have you your plugs set now I have similar problem myself thanks

fraser9764

iTrader: (3)

Plugs should be 0.6mm

paddy heffernan

as above .6mm but typically these running problems are as a result of a faulty water temp sensor .blue sensor at back of head

s11nmg

I have the sensors ordered and a new set of plugs so hopefully this will sort my problem thanks

Cossie92

I was just about to propose this. I had 0.7mm gap on Bosch plugs, then I changed 0.4mm Densos and it runs perfectly. With Bosch plugs on wrong gap it stuttered on full boost and backfired as yours.