1993 325 running problem - BMW Forum - BimmerWerkz.com
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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#1 (permalink) Old 09-05-2009, 07:02 PM
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1993 325 running problem

hi i have had this problem for sum time now but its getting worse, the problem is sometimes when accelerating it seems to hold back a bit, if i drive it hard and let the revs go close to the limiter it will not run right after at all its like its running out of fuel, but if i turn the ignition of and on it will run fine, but then sometimes it will start running like a bag of poo, then the next minute its fine?

the other week i put redline in the fuel tank it ran mint for a few days, loads of power no problems at all, but then it started again, i have changed the plugs, and fuel filter, any help plez thanks.

also the other day when driving it did it that bad it had to be towed home, it was only just idling but when i put my foot down it would not rev up and it was backfiring and popping out the air filter?
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#2 (permalink) Old 09-05-2009, 08:29 PM
OMFG another one!?
 
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Back firing may be a sign of an ignition issue allowing unburned fuel to ignite in the exhaust.

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#3 (permalink) Old 09-06-2009, 08:50 AM
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Any chance you have moisture in the spark plug wells? My was running like crap simular to yours. I changed the coil packs,looked for vacume leaks and finaly found that I have moisture in the wells. Any moisture (oil, water) will cause a missfire. It's worth a look.

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#4 (permalink) Old 09-06-2009, 09:51 AM
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Try a higher octane fuel

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#5 (permalink) Old 09-06-2009, 03:19 PM
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hi the car as been fine all day? when i changed the plugs there was a bit of oil in 2 or 3 wells so i cleaned it out, but it still ran the same, the plug boots are a bit cracked at the end. i was going to change them but its running ok now? also i was getting 25-26 mpg now im only getting 20 mpg?
i think its got to be a electrical problem, cuz when i was driving it the other day it started doing it and i flicked the ignition of for a second then back on and it ran fine again?

i also filled up with higher octane fuel yesterday morning but still had the problem all day yesterday?
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#6 (permalink) Old 09-08-2009, 10:18 AM
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its bin fine for a few days now but today it started missing so i turned the ignition of and on then it ran fine?
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#7 (permalink) Old 09-08-2009, 07:38 PM
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Check the ground strap from the engine to the chassis. Sounds like an intermittant electrical problem. That's what I would look at first.
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