RS craig 71

whats the average life expectancy of o71,s used to use pp8 but after about 2000mile they were shagged, changed to 071,s as advised. many thanks!

KSA-Cossie

iTrader: (4)

i change mine twice a year m8.

cossie500

Mine have been in 4 years now, no problems, might change them now though.

RS craig 71

4 years!! they be some good plugs or you push it everywhere LOL!

cossie500

denso p8, engine was built four years ago and i have never changed them, had a look today and they are nice and grey over the tip, done track days over the years etc, guess they done well then, changing them before i take it to the ring this year.

rinus_2005

iTrader: (1)

maybe offtopic, but how tight should the plugs fitted?

tabetha

Sure it is 23NM.
tabetha

TurboShed

I always did them by feel... dunno what everyone else does...

silky16v

iTrader: (1)

change mine every 2000 miles

cossie500

Put the plug-wire end of the plug in the socket and, holding just the extension, push it all the way in. Now carefully guide the spark plug into the hole. Try not to ram it in or bang it on anything because this can screw up the gap or damage the plug. With it sitting in the hole, begin to screw the new plug in by hand. Starting them off by hand instead of using the wrench will keep you from accidentally cross-threading one of the plugs. Screw it in by hand until it stops, then put the wrench on the end and tighten it snugly. If you have a torque wrench, you can torque it to spec, but if you don't, just make it tight without overdoing it. The metal in there is soft and can be damaged by overtightening. If you are pulling hard enough to make a sound come out of your mouth, like a grunt, you're overdoing it.

Lee.

TurboShed

I put some of those NGK ones in, they cost £12 from Halfrauds, now it idles very low when cold.

Not sure what to gap them to, I left them default?