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E46 Convertible
The E46 vert forum. Talk about dropping your E46 top here.

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Old 07-06-2013, 11:59 PM   #1
dasos
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Trouble starting right away.

Ever since buying my 2002 converible it has issues starting on the first trying. Normally takes 2-3 times before it will fire up. First I figured to try was replacing the fuel filter. Well just completed that today and still doesn't wanna go right a way. What do you think would be the next step? I figured maybe taking it to a shop to check pressure but not sure. I did not change the FPR just the filter. I'm hoping to avoid having to buy a new fuel assembly but not sure what else it would be. Not sure if these cars have a sending unit and a fuel assembly or if like most cars it's all in the assembly. Any advice would be helpful.
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Old 07-07-2013, 01:21 PM   #2
m3cabrio
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Is your service engine soon light on?

If not. Do a fuel pressure test and see if the pressure drops.
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Old 07-07-2013, 10:44 PM   #3
dasos
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Currently I have no SEL on.
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Old 07-17-2013, 08:53 AM   #4
dasos
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Update: I had the pressure checked out when having a valve adjustment done. The shop said the pressure was low and they believed it to be a check valve issue. They put some cleaner in saying it may help but what would be the fix? Is the check valve in fuel assembly and just require a whole replacement pump and all?
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Old 07-21-2013, 11:51 PM   #5
dasos
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Bump.
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Old 07-22-2013, 08:09 AM   #6
dknightd
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I believe check valve is part of fuel pump. Not positive. Apparently not a bad idea to replace the fuel pump on these. See general section. They seem to often fail. Since the fuel pump, and starting issues, are not vert specific, you might be off asking in that forum anyway.

Try this. Turn key to run position - leave it there for a few seconds (to allow fuel pressure to build) then turn to start.

bmw does recommend an occasional dose of techron, so maybe the cleaner they used will solve your problem
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Old 07-22-2013, 08:19 AM   #7
SMUUUUUV
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Quote:
Originally Posted by dknightd View Post
I believe check valve is part of fuel pump. Not positive. Apparently not a bad idea to replace the fuel pump on these. See general section. They seem to often fail. Since the fuel pump, and starting issues, are not vert specific, you might be off asking in that forum anyway.

Try this. Turn key to run position - leave it there for a few seconds (to allow fuel pressure to build) then turn to start.

bmw does recommend an occasional dose of techron, so maybe the cleaner they used will solve your problem
This... also if you're going to have your filter changed you might as well do the pump to. I was at 80,0000 and both the pump and filter was about toast. I just figured it was time to do it. Glad that I did....
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Old 07-22-2013, 09:27 AM   #8
dasos
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Thanks guys for the information! I decided to bite the bullet and order a new fuel assembly last night before bed. After doing a lot of research I have to agree with your recommendation to just replace it. Thankfully, it is pretty easy to do and the part was not too terrible cost wise. I was hoping the cleaner would have worked but after running a tank through do not notice much of a change. Sometimes priming the system helps it start a little better but still pretty much always 2-3 try's before it will fire up. Even takes multiple try's after just a few minutes of sitting. I will report back on my findings after new assembly is installed.
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