Bruce, replace the Bosch with single ground electrode NGK BP6ES's. I had nothing but problems with these Bosch plugs. It was explained to me that the extra electrodes block the fuel from getting to the electrodes.
>From what you've gone through, should be worth a shot. I forget, have you checked the timing? Biba Irwindale, CA USA -- to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi or email "unsubscribe alfa" to [email protected]

