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You fail mention which engine. Look at the link to the right and choose the correct engine.
with a spark plug sockett
WHAT YEAR??
Could be as simple as fouled spark plugs.
Click the link.
When changing the spark plugs, a diagram comes in handy to ensure a person is doing everything properly. For this car, the spark plug diagram is found in the cars maintenance manual.
AutoZone.Com will have info about your car.
Two words, "Ignition Module".
Firing order for 98 Oldsmobile intrgue: 1-6-5-4-3-2
what is the spark wire routing ford 3.0
http://www.buicks.net/shop/tuneup.html
1-6-5-4-3-2