lee81

Hi its running MFI

When driving a couple of weeks back it started to lose power but remained running poorly. No smoke or bangs and all fluid are fine.

When opening bonnet it appears there is no power stroke on piston 1 and 2. When removing the plug lead from these it make no diffrence. Pistons 3 and 4 are running fine and pulling these off will stall the engine.

Have checked and swapped plugs and leads around which makes no difference. A spark is jumping the gap between plug and lead on pistons 1 and 2 when the lead is placed close so I think its still getting spark.

Also wouldn't think injectors would fail two at the same time.

Am not sure on whats happened. Most parts are realtivly new and it gets a regular set up once a year. Has to this date ran spot on not missing a beat.

Any ideas would be welcomed as i'm not sure which area to look at

Versus_Creations

iTrader: (1)

Best to get it to a tuner and let them diagnois it for you properly.

lee81

I'm just looking for ideas on the problem, do all the work on car myself bar mapping. Am going to break car soon and would ideally like to find the problem before selling the parts on that may be faulty. Think i might do a compression test and go from there.

Have a MK4 RWD cosworth powered cabby now so aint going to restore this one anymore

cobrarally

Hello mate just wondering if you ever sorted out ur misfiring problem i have the same problem just on 3 and 4 cheers chris

lee81

I havent had chance to look and start striping the car yet. I'm now thinking that the head gasket has gone between cylinders 1 and 2. Hence no fluid loss but the power strokes are gone from two cylinders.

When turning the engine over you can feel resistance as cylinders compress twice ever two rotations of the crank. Should be four for every two rotations of crank.

Anyone know if this is a common failure point on rs turbo engines?

Bransby

Sorry to drag this up from
the dead but I've got exact same problem as first stated on cylinders 1 and 2 but when I pull the leads off 1 and 2 and just have the lead really close the plugs will fire again, the plugs and leads are brand new, I've swaped them around and no diffrence, I've since stripped the head off last night and I'm going to do a full head rebuild and fit a payne head gasket and stretch bolts, is there anything like a paste you can use on the gasket to help it seal better?? Cheers Ryan

lee81

You shouldn't and will never need a paste to seal a head gasket. Your better off getting a decent head gasket such as cosmetic or a group B item which is what i had. It lasted 35K on a engine that wasn't in good state producing 200bhp