I have a 1992 vr6 no power when driving and missfire on idle now and then.when stationary if you full throttle it would cut out if you rev slow build it gradually it will rev and sound awesome with no unwanted sounds.it has a old obd1 connection when plugged into a snap on solus ultra diagnostic it says no communication. Fitted new plugs ht leads distributer arm. I was parked outside my friends house just showing him the car next minute the engine must of got too hot and started leaking water out of the overflow on water bottle because it's red hot they was loads of steam I thought engine was