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E21 (1975 - 1983)

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Old 12-21-2011, 03:23 PM
BMC New York BMC New York is offline
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Location: Abilene,TX
Join Date: Dec 2011
Posts: 8
Mein Auto: 1979 320i, Harley!!
New here with 320i issues

Have a 1979 320i that will start after about 20 cranks, but will no rev up past 1800/2000 RPM, have had the car since may and when it runs its a great little car, has always been a pain starting, but now since i replaced the fuel line from the filter to the tank has lack of power and wont rev up, have changed both fuel pumps and the filter. Would be greatful for any advise or help, also looking for a proportioning valve for this car, it is leaking from the canister, thanks agaiin BMC New York
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Old 04-24-2012, 01:39 PM
Jetset83 Jetset83 is offline
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Location: Southeastern USA
Join Date: Apr 2012
Posts: 3
Mein Auto: BMW 320i (e21), Infiniti
Plugs fouled?
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Old 06-13-2012, 08:16 PM
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Flotsam Flotsam is offline
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Location: Maryland
Join Date: May 2012
Posts: 136
Mein Auto: 1995 BMW 325i
Its been a long time since i had my E21, but I am thinking you need to check your dwell angle on your points (do you still have points on yours?) and then your timing on your distributor.
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Old 08-15-2012, 07:42 PM
Xerxes Xerxes is offline
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Location: Tacoma Wa
Join Date: Nov 2010
Posts: 24
Mein Auto: 81 323i and 93 525i
I'd check your fuel pressure at the top, it's possible debris entered the fuel system and is restricting flow. It is also possible to have gotten a bad fuel pump, I've purchased a new fuel pump that did not work, it took me days to figure it out, but sometimes they don't work. If the pump is good but you have low fuel pressure replace the filter again and run compressed air backwards through the lines. Do this in as many small sections as possible, anywhere that you can open the fuel system to the next point, pay close attention to rubber to steel connections as the rubber hose is larger and the steel line makes a bottleneck.
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Old 08-22-2012, 11:28 PM
colinb123 colinb123 is offline
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Location: bremerton, wa
Join Date: Aug 2012
Posts: 9
Mein Auto: 1978 320i
we had the same issue with a boat i just bought. something was plugging the fuel system so it had a hard time starting. try checking every inch of your fuel system for any bockage
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Old 09-15-2012, 03:18 PM
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BMWFatherFigure BMWFatherFigure is offline
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Location: Perth, Western Australia
Join Date: Aug 2012
Posts: 4,116
Mein Auto: E23;E32;E34;E38;R50;R55
Also sounds like the starting jet is blocked/defective/disconected
Good - Fast - Cheap: Pick any two.
3 x E32 735iL (Alpine White, Glacier Blue & Kashmir Beige); 2 X E38 735iL (Oxford Green & Alpine White); E53 X5 4.4i (Pearl Beige); R50 Cooper; R55 Cooper Clubman (Both Pure Silver).
E38 Parts Car
E21 318i; E23 735i; E30 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i
I've just changed my wiper blades and now my reverse lights don't work. Should I change my fuel pump relay?
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