#4 NOT FIREING WELL - ZR-1 Net Registry Forums

ROGER E · 04-02-2004

My lt5's #4 cilynder is missing a lot but not all the time. I replaced plugs, wires and had all injectors cleaned and tested but no change. If i allow #4 spark plug wire to arc to ground the engine will die. Any suggestions???

ZR-1Mom · 04-02-2004

It might be a bad coil. There is one coil for every 2 plugs. The coils are under the plenum.

04-02-2004	#1
ROGER E Join Date: Apr 2004 Location: Folsom Posts: 23	#4 NOT FIREING WELL My lt5's #4 cilynder is missing a lot but not all the time. I replaced plugs, wires and had all injectors cleaned and tested but no change. If i allow #4 spark plug wire to arc to ground the engine will die. Any suggestions???

04-02-2004	#2
ZR-1Mom Join Date: Dec 2003 Location: New Hampshire Posts: 48	It might be a bad coil. There is one coil for every 2 plugs. The coils are under the plenum.