kangaroo fuel - BMW Forum - BimmerWerkz.com
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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#1 (permalink) Old 08-08-2008, 04:01 AM
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kangaroo fuel

My 1991 318i feels like I have put 'kangaroo fuel' in, especially at low revs. I can still notice the uneven running at increased revs. Is this due to a leak on the fuel line or does the ICV need cleaning, or is it a combination of both.
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#2 (permalink) Old 08-08-2008, 08:52 AM
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Lightbulb

ICV controls idle from full closed throttle to about 1/4 throttle, more or less. So, if ur prob occurs at that throttle opening, then yes, ICV fault can be suspected.

Then also, any type of fuel leak will affect performance because a leak suggests that your injectors cannot achieve a correct working pressure.

quality of fuel also plays a role here. stale gas will cause bad engine performance

rough idle probs can also be caused by electrical faults - when was ur last tune-up? plugs, wires, cap & rotor? ... gas & air filters?

*TIP: hesistation at low speed and drives fine at higher speeds-points to failing plug wires

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#3 (permalink) Old 08-09-2008, 01:47 AM
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Thanx Darkhorse

I have found a leak on the fuel tank that may be causing low pressure. Looks like taking the tank off and looking at the damage.
Thanx again for your help
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