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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 05-27-2007, 10:40 AM   #1 (permalink)
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Still have a hesitation NEED HELP

Been working on my 1993 325 IS 5 speed car. I am getting a hesitation or sputtering at low RPM. If I nail the gas moving in gear or at idle the engine sputters until about 2500 RPM then runs smooth. If I ease the gas on it does not do this have changed plugs to NGK plugs # BKR 6EK they are dual electrode and cannot be gapped. The K&N filter was just cleaned all ignition modules checked and I am not getting any engine codes. Any would would be great Thanks
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Old 05-29-2007, 06:28 PM   #2 (permalink)
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check all your vacuum lines and hoses; make sure connections are tight. make sure there are no obvious obstructions in intake/ exhaust...also check the throttle body assembly make sure its not sticking. do you have traction control?
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Old 05-29-2007, 08:16 PM   #3 (permalink)
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Define sputtering: Is is a misfire? Popping noise out the intake? Stumbling? Or something else?
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Old 05-30-2007, 09:40 AM   #4 (permalink)
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Dirty MAS? Sometimes the oil from the cleaning agents of the air filters get on the MAS and could cause a problem like that.
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Old 06-10-2007, 09:09 AM   #5 (permalink)
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Originally Posted by Sal329
Dirty MAS? Sometimes the oil from the cleaning agents of the air filters get on the MAS and could cause a problem like that.
You may also want to check what fuel pressure is the fuel pump making,
5psi difference will make a big difference on actual fuel injected since it is a exponential relationship between fuel rail pressure and actual fuel injected trough the injector.

So you may also want to make sure that the pump is indeed in good shape...
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