1999 Rivi Misfire

scarlson

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I'm the proud owner of a 1999 Buick Riviera, Silver Arrow Edition. I've been having a couple things go out on it recently but the one thing i can't seem to fix is a misfire I've had for some time now. It was back in april after a large rain and i drove through a fairly large puddle. Ever since, I've had a misfire. I've taken it to autozone for a computer DX 3 times, 1st time; cylinder 1, 2nd time; cylinder 5, 3rd time; random misfire. I've done spark plugs and wires and I dont know if i should do the ignition coils because i've been told it may be the crank shaft position sensor or camshaft.

Any advice is greatly appreciated
 
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