Ill try and be as specific as I can as this kinda problem could be an endless number of things, however thought I would try here to see if anyone else has had this before and can pinpoint what it could be! I have a MK2 single plug vts and since I have owned it, the idle goes a bit lumpy every so often. I really want to try and sort it out purely because its bugging me and not because its causing me any major problems (just an annoyance!). If I leave my car to idle for a 5 miuntes or so to warm it up on the drive - the engine will suddenly go into a rough spell for around 30 seconds or so. Sometimes its not as 'bad' as other times as it gets close enough to cutting off. Never seems to actually cut off on the drive when im idling, however every so often when im coming up to a junction and press the clutch and the revs drop, it will cut out. Recently when driving it down my favourite roads and pulling high revs, it also cut out - it has never done this before since I have owned the car.
I'm thinking this could be the coil - pack but want to test to see if this is the cause before buying a new one for over £100 - any ideas how you can do this? I fitted a brand new throttle body about a year ago as we were adament it was that, however the problem is still there. Fuel filter, spark plugs etc. have been changed very regulary and still does this. My car has a decat, so maybe this is just what happens without the cat on - my VTR never did that and was decatted though.
I'm thinking this could be the coil - pack but want to test to see if this is the cause before buying a new one for over £100 - any ideas how you can do this? I fitted a brand new throttle body about a year ago as we were adament it was that, however the problem is still there. Fuel filter, spark plugs etc. have been changed very regulary and still does this. My car has a decat, so maybe this is just what happens without the cat on - my VTR never did that and was decatted though.
