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5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

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Old 08-16-2008, 05:42 PM   #1 (permalink)
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'97 528i only starts on 2nd time

In the past few days my '97 528i will only start on the 2nd time I turn the key. Any thoughts on where the problem may lie? Oh, by the way, I just found this site so it's my first post - thanks!!!
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Old 08-16-2008, 05:47 PM   #2 (permalink)
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when was last tune-up? and what work was done on it?
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Old 08-16-2008, 06:19 PM   #3 (permalink)
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when was last tune-up? and what work was done on it?
Hey, thanks for the reply!

I bought this car at then end of last year from the 2nd owner. From what I can tell of his records (he bought the car with 35k miles...it now has 135k miles!) it never has had an official "tune-up". Brakes, oxygen sensor, valve cover gasket, a few hoses and plenty of oil changes, however there is no record of the plugs ever being replaced...I suppose I'm lucky it runs at all!
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Old 08-16-2008, 07:45 PM   #4 (permalink)
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don't you think it's about time to get it serviced before it gets worse?

it's a good time to start some maintenance history of your own make be in better "touch" with the car
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Old 08-17-2008, 09:45 AM   #5 (permalink)
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don't you think it's about time to get it serviced before it gets worse?

it's a good time to start some maintenance history of your own make be in better "touch" with the car

Well, of course, I'm definitely going to have it serviced, I was just hoping to get some insight into what I might be looking at here. In general, when I 've searched for threads (non-BMW) on this type of problem the fuel pump is mentioned as a possible causal problem for this type of issue - just wondered if that might apply here as well...thanks!
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Old 08-17-2008, 11:36 AM   #6 (permalink)
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Wink

fuel pump possible... but then if u've never changed fuel filter, then that may be the culprit too.

The only way to check is to check your fuel pump pressure. there is a service port by the fuel rails where u can screw in a guage to measure the pressure.

Then stage 2 of the check is to measure the pressure BEFORE the fuel filter. Same readings as fuel pressure at injection rail port = fuel filter is fine
Higher reading before the filter = time to change filter.

You can use this little trick i use when i diagnose fuel probs for friends:
1) switch on ignition maybe 2-3 times;
2)START.

*if it starts right up, then u do hv a fuel prob.

** if no change from before, then ur prob is electrical

REASON: everytime you turn the key ON, the injectors will shoot some fuel into the combustion chambers to allow for a cold start.
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