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A rat chewed through the fuel line between the tank and filter. I replaced the line and filter and it started up after I primed it by turning on the ignition several times. I ran it for about 30 minutes without any problems and turned it off. After sitting for about an hr it would not start. It turns over but just won't start. Any ideas?
 

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Is the pump priming when you turn the key to the first detent on the switch?

I believe the recommended starting sequence is to first turn the key to start position-wait for the fuel pump to cycle- then turn the key to engage the starter.
 

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Yes, the pump runs when I turn the ignition on. It runs for a couple of seconds then shuts off like it always has.
 

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I have the same issue.
Just bought a 2015 825i and it ran fine for an hour or so... several starts for small rides.
This morning, it turned over... fired, and then died.

After, it just turns over... no fire.

Removed the fuel line from the filter. Turned key, fuel pumps great.
Removed the spark plugs; they are dry and but not sparking when removed and grounded.

Was told the fuse block off of the battery might be blown, it is fine... 12 volts on both sides (at the wires)
Checked the three fuses under the dash.
Battery is 12.5volts

Question: are there any other safety or interlocks that have to be present.. before it fires? Seems like something is keeping fuel flow and spark from happening.

Thanks for any help!
Scott
 

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Perhaps this will help?

 

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I will certainly try these things when I get back to my home.
Hoping something on here will do the trick.

Thank you so much for this information.

Scott
 

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Open the hood and remove the tray, look in the middle up under dash you will see a circuit board. There is a 15 amp ATC fuse nay be bad. Also check any wires that may have been chewed by the rats. recheck that all grounds good. positive cable good connection.
 

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I have the same problem with my 2011 825i when turn the key no fuel took fuel filter off and still no fuel when the key is turned on. Can someone tell me where the relay is before I take the the seats off and check the fuel pump.
Thanks
 

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Check the pins on the connection of the fuel pump .the wire coming out of the pump . the 2 small pins can have issue. also up under the hood on the center relay module is a fuse that may have burned out. also check the ground near battery on frame clean the frame good . All checks out then the fuel pump is bad .
 

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I have the same problem with my 2011 825i when turn the key no fuel took fuel filter off and still no fuel when the key is turned on. Can someone tell me where the relay is before I take the the seats off and check the fuel pump.
Thanks
Unfortunately, the 2011s fuel pump relay is built into the module under the tray that's under the hood. We had to replace ours a while back. $105, I think.

Check the fuel pump harness under the passenger seat to see if voltage is being sent to the pump. Blue and black wires.

To make sure I properly understand you, the pump DOES NOT make a priming noise when you turn the key on?
 
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