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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 08-29-2007, 06:48 AM   #1 (permalink)
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Hi Any Ideas why the fuel mix is wrong on my E30?

Has anyone got any ideas on common problems with fuel mix ratio?

Im burning loads and somethings not right

Thanks

Joe
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Old 08-29-2007, 10:07 AM   #2 (permalink)
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Year and model please.....
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Old 08-30-2007, 04:53 AM   #3 (permalink)
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Its 318i auto - 1984 - E30 - Thanks

its basically burning a far too rich fuel mich and i dont want to do anything long dist until its sorted out

Thanks for your help

Joe
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Old 08-30-2007, 05:44 AM   #4 (permalink)
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Spoke to a fellow E30 owner and he said the air intake sensor/flow meter can sometimes get jammed

Any ideas
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Old 08-30-2007, 09:36 AM   #5 (permalink)
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Bad coolant temp sensor, broken vacuum line to fuel pressue regulator, faulty injectors, faulty fuel pressure regulator, faulty cold start injector, and a faulty thermo-time switch. Can all cause rich condition, faulty air flow very rarely causes a rich condition, often when these go bad the car doesn't run at all.
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Old 08-30-2007, 01:49 PM   #6 (permalink)
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Thanks a super charge matey

Quick Q - no response i will assume its a yes (cos its prob pretty obvious)

Is the fuel pressure reg - regulated by a hose that comes out of the engine near the head?

Thanks joe
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Old 08-30-2007, 01:51 PM   #7 (permalink)
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Cos ive just checked and said hose is secured by a crimp ring but is kinda loose, so this would benefit from a new fixing to air lock it
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Old 08-30-2007, 09:17 PM   #8 (permalink)
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It's the small can shaped part that is on the fuel rail with the fuel return hose and vacuum line going to the intake manifold on it. Just replace the hose if it's loose. It's cheap anyway.
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