[ericn1300]

Carbon blasting with water wouldn't be necessary if you use good gas with engine detergents at least occasionally. My wife had a similar problem with her 89, two tanks of chevron gas with techron fixed the problem. You can buy techron as an additive but I just stick to name brand gasoline with detergents. It really does make a difference.

I read somewhere that the EPA is planning on making detergent additives mandatory in all brands of gas.