VR6 DAMP misfire

[mattnorgrove 0]

With the wet weather we've been having, the VR has been playing up more and more.

 

Seems when the car is first started, that under load, the engine is only firing on 3 or 4 pots. Had a search, but only found results from peeps who have this problem PERMANENTLY. The thing with mine is, once the coolant/oil are up to temp the problem ceases. The problem has always been there when the engine is cold, its just never been this bad before all the wet we've been having

 

So anyone got any pointers on what could cause this cold/damp problem?

 

As always, thanks in advance.

[Jim Bowen 1]

i have the same, but only if i go through a big puddle, i find water gets on the top of coilpack and can see a spark jumping out of something.

[mattnorgrove 0]

So if the coilpack is the problem, would the problem stop once the engine is warm?

 

I'm thinking, its either that, HT Leads, Plugs or MAF?

 

Don't want to shell out changing them all though, just whatevers causing the problem...

 

Could it be anything else?

[horney 0]

I would suspect coil pack and or leads. THey get pretty stroppy with age.

 

nick

[Jim Bowen 1]

have you had a look in the dark?

 

use a water spray to spray on bits and keep an eye out for sparks, you can usually hear them too

[mattnorgrove 0]

Good idea, I'll give that a whirl, cheers...

[12 DEG BEN 0]

Mines doing it too. Have put it down to condensation down the spark plug holes which drys out when the engine gets warm. Someone suggested a small spray of WD40 to act as a repellant but im not sure.

[Jim Bowen 1]

i sprayed some damp start on mine when it was sparking and forgot to turn engine off, and i ended up with a flame thrower and brown pants :lol:

[millerman 0]

i had this a few years back and basicly it the resin around the coil pack failing it only takes a tiny crack

and it will arch all over the place i dried mine out put more resin over it and it was ok again untill it rained or was damp and

then would miss fire again so ordered a new one and no more problems