Spark plugs

[In2k]

Probably been covered many times.my st developed a misfire on Saturday and traced to a faulty plug.what are the best to fit.is AGPR 12PP the correct ones.any suggestions welcome.

[Simon T]

AGPR 12PP is correct, problem is finding some new - discontinued. They do appear on ebay, but expect to pay £20 a plug.

There is probably an equivalent, I did try some NGK ones but it idled roughly no matter how gapped. I managed to find an old stock set of 4, had the last 4 that our local Ford dealer had. They weren't having any more in.

[sebbo]

Whats the difference between the AGPR 12 PP8 and AGPR 12 PP11...?

[The Radman]

i know someone with a new set of 12pp they will sell,let me know if interested. now in the sale section

[grcossie]

Whats the difference between the AGPR 12 PP8 and AGPR 12 PP11...?

Only the set gap, 0,8mm pp8 and 1,1mm pp11

[sebbo]

Only the set gap, 0,8mm pp8 and 1,1mm pp11

Cheers buddy.....

[In2k]

hi,eventually got around to removing the plugs and there are denso pk20pr-p8 plugs in it,also had these in a sapphire cos with the same issues,put agps071c in the sapphire,will these also be ok in in escos.

[dfp454]

I use 071c in my BT car with gap of 0.6mm

[redrsmk5]

As the AGPR12PP small turbo plugs are no longer available and very rare, what other plugs are people using in small turbo cars with no running issues.?

[jsa]

Quite some time ago, ditched the misfiring Denso's for the NGK's in the pic. Checked/set gaps to suit. No more random misfire.

[mikedaf2]

I've always had issues with Denso's swapped to NGK a long time ago and never had misfires since.

[Rigcos]

Sorry to revive an old post, but I have a misfire on Denso plugs as well and am having trouble getting the NGK ones on this thread(I am in Ireland) They have a Bosch equivalent. Are they a no go or any other options? Thanks

[mark shead]

I use denso IK24/27 on every engine over the last 15years and never had a problem.

Mark

[Rigcos]

I use denso IK24/27 on every engine over the last 15years and never had a problem.

Mark

Forgot to say, mines a small turbo, them plugs suitable for small turbo?

[mark shead]

Forgot to say, mines a small turbo, them plugs suitable for small turbo?

For standard and stage 1 the IK24 the best one.

Mark