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dubman

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Posts posted by dubman


  1. The car didn't start 3 weeks ago, and now it has occured twice more. After pulling the fuel hose before the fuel rail (I didn't jump the relay for fuel flow test), the car started nicely with the fuel hose disconnected. After the 2nd time it didn't start, I did the same thing but with no luck, and after changing the fuel filter....it started.

    2 days ago, car didn't start again. I put in a new pump today just in case (I know it's bad to throw parts into a unproperly diagnosed issue) as after some reading, the only two things that came up were fuel pump issues, or the fuel pressure regulator was shot (fuel pump was the cheaper of the 2, and mine was old)

    Check list:

    Spark: good

    Fuel pump and relay: good (new pump put in 30th Nov)

    Temp sensor, engine pulse/crank sensor: good

    Vacuum lines and intake gaskets: good

    Since pulling fuel lines made the car start, I'm now thinking its the fuel pressure regulator causing the issue, or a blockage in the fuel return line. The fuel return line right before the fuel pump had very poor flow rate (around 1/3 or 1/4 of the pump flow).

    The car ran briefly when I cranked it with now fuel pump. The common factor with all 3 starts after a "no-start" was the absence of pumped fuel.

    Would love to hear anymore feedback on my gremlin chase (getting pretty ticked off about it). It's either on a tow truck off to Glenns or stumbling there haha

    edit: updated progress with the BS cut out, coz now i'm just annoyed at it


  2. I bought a pintle and o-ring kit on eBay for $20 and got six injectors cleaned and refurbished for my old 528i for $25 each at Edgell on the North Shore. My regular mechanic said he can do for the same price for my V8. About the same price and I won't have to wait for them to go to and from the US.

    +1 for Edgell, they don't muck around and give great feedback about the injectors


  3. the disconnected screw end hose + plug is for emmissions canister? iirc

    the stalling might be a dirty throttle position sensor (oil plus other goop goes in from the bottom of the throttle butterfly pivot). also, check idle control valve, it should make a "click" sound when the key is turned from off to the 2nd ON position (before cranking), and another "click" when you pull the key out (idle valve opening/closing). plus give it a good clean

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