Probably because you got the spark plug wires plugged onto the wrong spark plugs.
60 persent
fleetwood 94 /96 5.7 liter igniton coil location standing in front of car with hood up, on right side of motor . look for short spark plug wire. a black small looking coil with alittle sensor behind it. i changed mine on my 1994 fleetwood . look for short 2,3 inch plug wire. in that area front of motor where valve cover is .
where would the spark plugs at on a Oldsmobile 1989 engine
where are the sparkplugs on a 2002 cadillac deville and how to change them
Pull wire off the spark plug
How can I change the wiring and spark plugs on my 1996 Cadillac Sedan Deville Concours?
Recommended change is 100,000 miles
I learned the hard way on my 91 to take the wheel off and replace them through the wheel well. Not sure if 94s the same worth a shot.
The 5.7 in your Cadillac is a Chevrolet LT1. The same motor that came in an Impala SS and Buick Roadmaster. It uses an "OPTI SPARK" distributor that runs off the front of the motor. There is no timing adjustment that can be made with the unit. The engine management computer controls the timing and adjusts the spark as ou drive. If you are having timing problems, the OPTI SPARK needs to be replaced.
Spark plugs are easy to change. One disconnects the batter and spark plug cables, and removes the old spark plugs. Next a person puts in the new spark plugs, then reconnects spark plug cables and the battery.
my name is Edgar jara