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3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

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Old 09-16-2003, 09:00 AM   #1 (permalink)
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I need a little help. My 87 325e seems to have a hesitation or miss when you run the rpms up very high. Once you are running at a normal speed on the highway it seems to pulse. I have replaced every electrical componet from the coil to wires to plugs. It has not made any difference. Nothing shows up from the computer as a problem. Any Ideas?
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Old 09-16-2003, 09:02 AM   #2 (permalink)
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Originally posted by atsbmsmith@Sep 16 2003, 08:40 AM
I need a little help. My 87 325e seems to have a hesitation or miss when you run the rpms up very high. Once you are running at a normal speed on the highway it seems to pulse. I have replaced every electrical componet from the coil to wires to plugs. It has not made any difference. Nothing shows up from the computer as a problem. Any Ideas?
what kind of gas u use?
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Old 09-16-2003, 09:05 AM   #3 (permalink)
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and welcome
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Old 09-16-2003, 10:16 AM   #4 (permalink)
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Mid Grade 89 Octane
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Old 09-16-2003, 04:33 PM   #5 (permalink)
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Originally posted by atsbmsmith@Sep 16 2003, 09:56 AM
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i heard something lik this and the problem was there fuel filter was bad and they were usin gas at shell.
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Old 09-16-2003, 05:13 PM   #6 (permalink)
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yea it sounds perhaps like a fuel filter if its just something like loosing power. If the engine is missing youll know it. It will make sound. Also, since you have an e30 (and most likely unmodded correct?) you can go ahead and save yourself the money and buy 87 octane. These e30s have rediculously low compression pistons and relativly weak ignition timing and dont need high octane gas at all.
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Old 10-13-2003, 07:02 PM   #7 (permalink)
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I have to disagree with the regular gasoline suggestion. Always use premium on BMW's especially when they get older. I notice an engine which behaves and performs better on high octane. But also the shell thing is true don't use shell! I have a nasty idle which causes the engine to shake so bad you can feel the car move. I have not had my engine miss yet though. Another thing dont use synthetic oil...its too thin.
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Old 10-13-2003, 08:52 PM   #8 (permalink)
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Quote:
Originally posted by M5_dude@Oct 13 2003, 05:42 PM
Another thing dont use synthetic oil...its too thin.
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