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Only starts with starter fluid?

Tiny
DARELL MORRISON
  • MEMBER
  • 2004 BMW 325I
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 170 MILES
It will only start If I spray starter fluid in the filter box and will run until ether is burned off and other times will stay idling. I have new crank shaft sensor, new mass airflow, and new camshaft sensor.
Monday, May 22nd, 2023 AT 4:37 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

If it stays running sometimes and not others, it sounds like we have low fuel pressure. I attached the directions for testing pressure below. You will need a fuel pressure gauge, but most parts stores will lend one to you.

Also, the last pic below provides the manufacturer's pressure specifications. It shows 3.5 bar. That is approximately 50 PSI.

Let me know what you find or if you have questions.

Take care,

Joe

See pics below.
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Monday, May 22nd, 2023 AT 8:57 PM

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