PADDYHOEY

iTrader: (24)

anyone any ideas? my car is sparking on 2 cylinders, its a 98 uk model, with coilpack in middle of manifold. i have changed coilpack and ignition module, no joy. there is no fault codes. and there was no warning when it died, just driving bout 5 - 10 mph and it just lost power. it almost starts cos there is 2 cyls sparking. any ideas people?? cheers paddy

Shark Man

If you have one duff lead or spark plug. It will affect both cylinders thats on the same coil (The ignition system uses double ended coils i.e 1 coil works 2 cylinders)..thus 1 duff lead/plug = two duff cylinders.

You wouldn't belive how many people swap coil packs when it was a duff lead at fault.

PADDYHOEY

iTrader: (24)

hi sharkman, my car has 1 coilpack that runs 4 cylinders, its wierd its as if only half the coilpack is working???

Shark Man

That coilpack in the in the middle on top of the engine contains 2 coils, 1 for two cylinders (it works on the wasted spark principal).

Borrows some plugs and leads off car that is known to to be good

Jolly Green Monster

iTrader: (4)

or try swapping leads from left to right and see if the problem moves..

Are you sure there is no spark rather than something else.. mine did similar which turned out to be the cam belt had jumped two teeth.

Simon

PADDYHOEY

iTrader: (24)

hi guys, deffo no spark. had it to subaru main agents yesterday, they fitted a ecu, but its still the same, its also had a new coilpack, ignitor module, crank, cam sensors, but no difference, the fault is still there!!

Shark Man

But did they try new HT leads and spark plugs?

PADDYHOEY

iTrader: (24)

ye, ht's checked. there is no low tension pulse, on the coilpack feed??

Shark Man

Well that's pretty much everything barring wiring loom and connectors, the main one to the left side of the inlet manifold is good place to start .

Don't ask me pins and wire colours as I don't have them

PADDYHOEY

iTrader: (24)

put on a new camshaft pulley, now all is good !!!!

360ste

iTrader: (1)

Glad you got there in the end. Lost a coil pack on my bugeye (1 per cylinder). It was a bit of a swine finding the faulty item. Plugs changed etc got there in the end then the feeling you have now when I fitted the new coil pack and all was sorted.