I had misfiring problems last year, ended up with a new ignition coil new exhaust manifold, but cos volvo dealership was useless they didn't fix problem


I popped in some new spark plugs and thcar has been fine.. till now!

The problem has returned a year later, I've probably done about 15000 miles in it.

As I need my car for work I am concerned.

Now if I pop some more sparks in it they will probably last but I wonder if they are dying young for a reason..

The only thing left to change is the spark plug leads, however they are £91 from volvo dealer.

Parts for volvos online sell them from Scan Tech? are they any good as they are only £36:

http://www.partsforvolvosonline.com/...oducts_id=2582

I presume the fuel air mix ratios are fine and I had the engine checked over and pressures looked good, its hardly burning any oil (top up every 2000 with half a litre)

 

Did you put Volvo plugs in it last year? I had mis-fire problems and I replaced the plugs, leads,distributer cap and rotar arm. (all Volvo parts). The plugs that were in before were Bosch (put in by the previous owner and had only done 20,000 miles), the shop told me that it was a wise idea to use Volvo plugs and leads in these engines. I don't think the cheaper option is the best thing in the long run.

 

Fcpgroton sells the OEM wire set for $49 and they do ship to UK. I would stick with OEM plugs and wires.