slight missfire

[MetzVR6 0]

After having new leads on my 1997 (coilpack) vr theres a slight missfire upto about 1500rpm. if you sit in neutral and slowly rev upto 1500rpm u can feel the hesitation but after that its smooth as.

Any ideas lads?

[blackmagicvr 7]

could be the acutual coil pack itself or the spark plugs?

[xyber 1]

1)are the plugs tightened up enough, common problem 2)are the leads fully connected on the plugs, not as easy as it sounds without the proper tool 3)faulty leads, try the old ones again 4)coil pack damaged/cracked , if it is you can coat it in epoxy resin to re-insulate it which will sometimes solve the problem and save a few hundered quid 5) leads put back on in correct order?

If its suddenly playing up after new leads, the chances are it'll be something small i would think

happy hunting! haha

[vr6newcomer 1]

as above really matey, probably easiest way is to put the old leads back on first, check your coilpak at night by starting the car and spraying with a mist of water, if its buggered you will see the arcing in the dark more clearly, but shouldnt be anything too major, i got a coilpack from an engineering firm in essex for about £100:00. p.m me if u want me to find the website for ya..

keep us posted.

[MetzVR6 0]

Cheers guys, i will check the plugs and leads today, the old leads are in the bin as they were pulled to bits when i had my timing chains done. I have the little plastic tool for the leads so i will use that.

[xyber 1]

Id get a new metal one from GSF of somewhere as the plastic ones are a joke, think theyre about £12

[MetzVR6 0]

Just checked all the plug leads and there sno probs with them but i couldnt check the plugs themselves as i realise the hole to get at them is slightly smaller than the sparkplug sockets i have!

I guess its a trip to GSF lol

[xyber 1]

the socket with a magnet built in to remove the plugs is only £7 from GSF, bloody VR6s with special tools for simple jobs!! haha

[stockers 1]

almost certainly a lead problem, i had exactly the same problem missing between 800 - 1500, new leads cured it, it may just be a buggered end on one of them, bit labourious but just remove and replace each one individually then you will be able to pin point which connection is faulty.

[matth76 1]

I had the same problem and turned out every single one of my 6 plugs were not fully tightened - and this was after a "full" service at a main dealer!! Never been back to a main dealer since!