Spark Plugs And Lpg

[sh@un]

Hey all- My C34 RS Stag is dual-fuel, and has an evaporative gas injection system on it. I do a lot of kays every week, and it runs the majority of time of gas because the $ savings are huge.

Only problem is I never really get very much life out of the plugs- probably not even 10k kms before they start missing at light load/moderate throttle acceleration. Does anyone know if there's a special type of plug that works well with gas, or what sort of heat range and gap I should be running?. I've tried a few different variations now, and even iridiums were dead in less than 20,000- not especially good value at $180 a set.

Engine is pretty much standard and only runs 7-8 psi, and the car has a healthy set of Splitfire coils.

Changing them so often is a tedious job on an RB25. Any insight will be great.

[Pal]

i would go to a gas installation/maintenance workshop and ask them.

quite sure i got platinums in my jackaroo (has gas injection). i don't service that one so not sure on plug gaps

[sh@un]

Looks like Bosch and NGK do 'double-platinum' plugs for this sort of thing. I'm sure they won't be cheap, but if they last it could be worthwhile.

[some_cs_student]

Have you had the gas system tuned recently? It might be worth it...