I've had a 1991 E30 325i for a few months now and one of the issues with it is it struggles to start. I have to keep the ignition key on for 3-5 seconds before the engine fires up. What should I replace to help resolve the issue? fuel pressure components? spark plugs? Not really sure what exactly to replace in the ignition/fuel system to help the engine start more easily. Really appreciate input!
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E30 struggles to start
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It could be a few different things.
If you search around this forum, you'll find a many threads with answers concerning your problem.
I'll try and point you in the right direction, though, there are many things that can cause this problem.
I'd start off by checking fuel pressure and the blue coolant temp sensor that sits in the thermostat housing.
You can search how to test that sensor with a multi meter.
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^ Agree with Burgundy.
The search function will yield lots of things to try.My previous build (currently E30-less)
http://www.r3vlimited.com/board/showthread.php?t=170390
A 2016 Toyota Tacoma TRD 4x4 Offroad in Inferno is my newest obsession
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Originally posted by AlexSutherland View PostI've had a 1991 E30 325i for a few months now and one of the issues with it is it struggles to start. I have to keep the ignition key on for 3-5 seconds before the engine fires up. What should I replace to help resolve the issue? fuel pressure components? spark plugs? Not really sure what exactly to replace in the ignition/fuel system to help the engine start more easily. Really appreciate input!
I had the same kind of issue, and I seem to have fixed it.
Check out my thread and see if you can find a solution on their.
The check valve solution worked straight away!
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Originally posted by Ari Ehu View PostHey mate!
I had the same kind of issue, and I seem to have fixed it.
Check out my thread and see if you can find a solution on their.
The check valve solution worked straight away!
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Originally posted by AlexSutherland View PostThanks mate for the advice. Are you a kiwi? I was thinking the issue with fuel system was the fuel regulator. I'm quite unfamilar with the 325i fuel system or fuel systems in general. Does the 325i have a check valve as well?
I'm unsure about that, but I believe it does but they malfunction?
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Originally posted by Ari Ehu View PostYeah I am how'd you guess? haha
I'm unsure about that, but I believe it does but they malfunction?
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Originally posted by AlexSutherland View PostJust curious. My father's also from New Zealand. You're right it does have a check valve but it's built into the fuel pump. From what I've read. I could be wrong but pretty sure. Changing the fuel pump is probably my best bet. Unless you think other wise. Also do you know if it's common for the gas tanks to corrode?
I have been told that it can be a problem, and allows the fuel in the line to flow back into the tank, instead of staying pressurised in the lines. You could do That, but a check valve may be a cheaper option, it's just a matter of trial and error. Hmm gas tanks rusting, I am unsure about that one. I do know it happens just not sure if it's common.
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Originally posted by Ari Ehu View PostOh right, where in NZ is he from?
I have been told that it can be a problem, and allows the fuel in the line to flow back into the tank, instead of staying pressurised in the lines. You could do That, but a check valve may be a cheaper option, it's just a matter of trial and error. Hmm gas tanks rusting, I am unsure about that one. I do know it happens just not sure if it's common.
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Originally posted by AlexSutherland View PostHe's lived mostly in the north shore of Auckland. How'd I just change the check valve on a 325i?
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Originally posted by Ari Ehu View PostOh nice man, I'm from Gisborne, a check valve can be placed in on the in fuel line. But before doing so i'd recommend checking to see if pressure is held in the fuel lines first, you can check at either the engine end or by the fuel tank.
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Originally posted by AlexSutherland View PostDo I need a device to check the fuel pressure?
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