# 5 cylinder fowls out plugs. What's causing this problem.? Loss of power . ideals very low runs crappy

Asked by Bert Nov 15, 2015 at 03:57 PM about the 1999 Pontiac Firebird Base

Question type: Maintenance & Repair

2 Answers
70,935

Kelly answered 9 years ago

low compression...bad rings...bad valve guide...BAD VALVE SEAL....intake manifold gasket leak...cracked head....bad plugs/gap/plug wire....TELL YOU WHAT...U DIDNT SAY WHEN OR HOW LONG....BUT I BET IF YOU TAKE THAT PLUG AND REPLACE IT WITH ONE 2-3 HEAT RANGES HOTTER THAT WILL FIX IT ...FOR ABOUT $2.00...SAY IF YOU HAVE A >R 43 GO UP TO A >R 45 !!!

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F_O_R answered 9 years ago

If you only have one bad cylinder then try a hotter plug which will help burn off the excess oil. How many miles are on the car?

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