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Plug fouling on VW Golf Mk4


charlie_pank

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A friend of mine's golf is playing up - the symptoms are:

 

Jerky drive when cold, less bad when warmed up but jerkiness still present

fouled plug on no. 2 cylinder

smell of fuel when revved hard

 

The dealer says they've done a check of ECU and sensors and can't find a problem (but I don't believe them).

 

 

Any suggestions appreciated

 

 

 

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He's already changed plugs and leads, which alleviated (not completely removed the symptoms for 3 months, now they are back again. I'll suggest the coil to him, at which point he'll go "what's a coil?" (yes it's going to take a while to help him!).

 

Just so I can give him some decent instructions, can you tell me whether it is single coil + distributor like in the good old days, or is it 2 coils + 4 plugs and ECU triggered wasted spark like them thar modern thingummies? I suppose it might even be 1 coil per plug if it's only affecting 1 plug...

 

 

Thanks

 

 

C

 

Charlie'n'Kermit

The plan is: There is no plan

S5EVN

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yeah, coils were a big issue. If it it that, get them to replace all four as the others will be from the same "rogue" batch. They changed suppliers last year so the new ones are ok *thumbup* Normal coil pack failure symptoms are rough running, missfires, reduced power and the emissions light should come on on the dash.

 

Seek forgiveness, not permission.

1700 X-Flow. The sweet sound of carbs!!! see it here

Look out, I'm armed and dangerous!!!

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