Question about 2000 Cadillac DeVille

2 Answers

2000 Deville running good when parked (sat for 2 weeks) started & ran very rough,,,levelled out but acted like it was starving for air &/or fuel,,,,plugged scanner in,,,,,no codes,,,,,,ideas?

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  • k4u2k May 28, 2011

    Air filter is already new,,have already checked for rodent nest etc,,,,will add fuel conditioner & see what happens

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  • Master
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Hello and welcome to FixYa!

As a first course of action, I strongly suggest that you check out the spark plugs. If the spark plugs are corroded, covered with carbon or has big gaps this issues occur. You may have good fuel supply but no good current to burn the fuel, spark plugs can be the answer.

If plugs are good or new, Try going for the plug wires. You may have a worn out plug wires that's why there's insufficient current supply. Have it replaced if it's worn out.

Hope this helps and thank you for using FixYa! Have a good one!

Posted on May 28, 2011

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  • Cadillac Master
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CLOGGED FUEL FILTER,CONTAMINATED GAS.ADD A GAS TREATMENT AND FUEL INJECTOR CLEANER COMBINE IN ONE BOTTLE ADD TO FULL TANK NEW GAS AND SEE WHAT HAPPENS,ALSO REPLACE AIR FILTER.

Posted on May 28, 2011

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