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#1
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Runs Awesome! But won't start first try
The only problem is, it takes two or three times to start it! It cranks but nothing happens. I've already changed the crank sensor to no avail. It has always done this intermittently so it doesn't have anything to do with my work. I hear the pump running to prime the fuel system. No codes. Any ideas? |
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#2
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I've noticed if I turn the key off and on about 5 times it starts on the first try. Anyone know what this is??
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#3
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This issue had happen to me a few times since I own my X (11 months of ownership). Not as often as your and I'm wondering why too. Let me know what you found out.
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2003 X5 4.4i w/ Sport Pkg, Cold Weather Pkg. 2010 X5 4.8i w/ Sport Pkg at 19,000 miles |
#4
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Could be fuel pump is going bad. Check pressure at fuel rail, should reach full operating pressure in about 2 seconds after key is turned to the run position.
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'03 X5 4.4 Sport, last of the M62s (8-03 build date) I believe in deadication to craftmanship in a world of mediocrity! |
#5
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I don't know if all BMW's have a similar design, but there is a check valve in the pump that goes bad well before the pump goes bad. Allows the fuel line to depressurize when pump cuts off.
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For Sale Thread: http://www.xoutpost.com/classifieds/...ia-bridge.html 2004 X5 3.0i - Sold 1998 328i Convertible (e36) -sold 2004 325xi (e46)- sold Any questions?: DICE mediabridge|gauge rings|LED Angel Eyes|front door carrier|GT1/DIS/INPA/NCS|bluetooth retrofit|SIRIUS Retrofit|fuel filter|Dorman DISA|Roof Rack Delete|Sunroof drains|AC drains|rear sway bar swap|o2 sensors|VCG|Osram Night Breakers |
#6
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I'll check the fuel pressure at start up.
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#7
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See the 4.4 long crank thread I just bumped for details on what the readings should be and troubleshooting.
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'03 X5 4.4 Sport, last of the M62s (8-03 build date) I believe in deadication to craftmanship in a world of mediocrity! |
#8
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I THINK it is fixed! It has started and run the first try probably 20 or more times now. I replaced the fuel filter/regulator and that was the problem apparently.
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#9
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Most likely the regulator, but now a days the regulator is included with the fuel filter. If you smell gasoline in the vacuum line that connects to the regulator that means the diaphragm is torn.
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2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD |
#10
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Yeah I posted that I replaced the fuel filter/regulator and that fixed it. Its been several days and countless successful starts so I'm calling it good.
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