HELP !- losing a cylinder in the rain :(

[BigDatto]

As topic states:

losing cylinder(s) when parked outside in the current Sydney weather for 6 hours on an otherwise stock ECR33. after a while (quite a while) & some heat it comes good. The plugs are newish and the Datto has never missed a beat.

Are S1 RB25's prone to this ??

has anyone else experienced this ??

It's kinda spooked me...

Any help would be greatly appreciated:D

Cheers

[JimX]

They aren't particularly prone to it, but it sounds like a fairly common condensation problem that can affect any car. Check the coil pack wiring, maybe take it off and use some emery to remove oxidization and spray some wd40 in. Check the igniter too if you have one (early series 1).

[BigDatto]

doing at right now!!! thanks for the support........

[BigDatto]

Problem solved !

Checked the spark "oldskool" - laying the coil assembly on its side with an old set of plugs. gave it a crank & identified two that weren't firing. I then swapped the location of the suspect coils ( to rule out the possibility of loom or ECU being at fault). Then the sight of six little blue sparks:D:cool:

What I learned was that by doing this diagnosis first the offending coil(s) can be identified and isolated in very little time, and also that the coils appear to be verrrry sensitive.

Hope this info saves someone some time & headache...

[JimX]

So after you moved the coilpacks around, it was all ok? How do you think moving them fixed it?

[Guest RedLineGTR]

thanks for the info i wasent even sure what to do in a situation like that

[Anquetil]

Originally posted by BigDatto

Problem solved !

Hope this info saves someone some time & headache...

Cool thanks, something for the memorybank!

Also a dumb question, how can you actually tell that a cyclinder is failing in the first place?

[adam 32]

when it happens, youll know.

engine sounds like iots spluttering, wont rev as well, makes les power etc

[BigDatto]

Yup, adam's spot on. it'll sound like a WRX just off idle & runs about as bad as an engine can without stalling !

Swapping the pos of the coils on the alloy mount... well I'm dead certain the moisture was between the coil & mount and that by simply removing/inspecting/cleaning/silicone spraying/replacing (with sighted good ones) the known faulty ones came good !!

Also I eyeballed the sus coils arcing (up to 12mm !!) to the alloy mount from their bases which was a bit of a giveaway.

I reckon seeing is believing, & there's been a lot of threads about coil pack testing involving swapping coils and tossing the failing ones. So how many perfectly good ones get tossed !!

Using the "Crank & Eyeball" test, if the coil is good you should see a spark, but NOT necessarily at the plug electrode !

If no spark do the GraemeW test. Many have questioned the validity of this test, but if it fails it's well & truly dead. I know from searching these forums that other members coils' have passed the resistance test but got binned anyway, consequently the rumour exists that this test is unreliable - methinks not !!

P.S. I gapped the plugs to .75mm and no more miss under load @4500rpm above 8-9 PSI with stock ECU. Jay95 posted about this in another thread & I give it the full thumbs up.. gap 'em down with confidence.

Oh, and the car runs better than it ever has on higher boost too !!

The PFC on my desk goes in soon, so I'm looking forward to more mayhem !

Hope I save someone some headf%ck !