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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 03-30-2007, 05:55 PM   #1 (permalink)
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fuel question

most of u know that i a 89 bmw, well i have a question for u all that i hope i can get help with, How Do I Know If My Injectors or a Injector is Bad?
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Old 03-30-2007, 06:27 PM   #2 (permalink)
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well seeing how injectors throw fuel in the cylinder to be ignited i would say listen to see if it sound like youve dropped a cylinder but hey dont take my word for it
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Old 04-05-2007, 03:14 PM   #3 (permalink)
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You can put a stethescope on each.
They should all click about the same.
should sound like a sewing machine in there.
can remove and flow test each I think Bently describes this do some searching .
can check voltage etc at contacts I think too.
I did a post previously with some part numbers for Bosch Ford TypeI and type II and III replacements
ie 17 19 24 lbs
New ones are expensive Denso I think make a good Hipo one $$$
ie 100each x6 == $600
You can buy decent remanufactured ones online. But the point is to upgrade the fule rate.
StarMavin says just get yellows from an old Ford at the junkyard.
I'm stil thinking of doing this.
Check your pressure regulator too ther are two types i has more pressure than e I believe.
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Old 04-05-2007, 04:19 PM   #4 (permalink)
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yep the E runs at 2.5 bar and the i runs at 3 bar...but contrary to popular belief converting the E to 3 bar lowers the power due to an enriched mixture....
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