Engine misfiring....

[Greedy]

I have just bought a VW Golf 16v GTi. The car has been missing slightly tho. When idling the car seems 2 rev by itself and doesn't seem to stabilise. Also when driving the car if your foot is just on the accelorator and no more then the car will start jumping as though u had "kangaroo" petrol. Any ideas as to what might be wrong with it?!? Many thanks.

[tom26]

could try spark plugs, ht leads or ISV?

[Greedy]

Thanks, i will try that 2nite. Where will i find the ISV?

[tom26]

i'm not 100% sure on ABF engines, but if its in the same place as KR 16v's it should be here!
EDIT. should be a kr...

[Martz]

My rallye done that, changed the ISV and bingo! job done. Look on ebay as vdub charge around £230 - £300.

[tom26]

^ i bought a 2nd hand isv on ebay for 15 bucks. all good!

[Mr Blue]

ive never seen an isv fail to be honest.

check for air leaks in the vacum hoses

[tom26]

^ good point!

[Greedy]

Cleaned the ISV, got new leads and plugs....and its still misfiring! Its like having kangaroo petrol all the time! Startin to do my head in! Any other suggestions?? Many thanks....

[tom26]

would it be the timing? need rubjohny's help for this one i think!