Question about Cadillac SRX

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My grandaughter put diesel fuel in my daughter's 2007 cadillac srx all wheel drive 3.6.with my fuel pump i could only get half the gas out i think the screen may be clogged.is there a access hole under the rear seat to get at the fuel pump or will i have to drop the drive shaft and exaust to remove the tank?do you think the injectors will be okay or will i have to replace them too?my grandaughter drove the car untill it quit.

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  • Raymond A. Yoder Sr. May 03, 2010

    I think the screen has plugged up because my pump will draw a vacuum in the line and little to no fuel with a half a tank.I could try to blow compressed air threw the line to clear it and see if i can draw any fuel out after that.but if i have to pull the pump do i have to drop the tank or is there a access hole under the seat.thanks for all the info so far and when we are done how or where do i rate your help. Thank you again Ray...

  • Raymond A. Yoder Sr. May 03, 2010

    The solution was very helpful,Roniecon is very helpful and knowledgable. Thank you for all the help.Ray...

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  • Cadillac Master
  • 6,826 Answers

Most of the time ,adding more fuel (gas)will delute the diesel fuel,and allow the engine to run,not real well,but then you can run the fuel out by driving it,now the fuel screen,and the fuel pump,are more likely ok,but I have seen the fibers collect around the screen and cause this.But it is worth a try,unless the fuel pump is not pumping at all,check the fuel pressure at the fuel rail,and if it has fuel pressure,I would add more gas,enough to out weigh the diesel fuel,and run the engine,yes it is possible the injectors could have been damaged,but try this to make sure,the fuel filter will catch the fibers,but change it also,and add the gas to the tank,and go from there,Most likely adding the gas,and changing the fuel filter will correct the problem.

Posted on May 03, 2010

  • Ronny Bennett Sr.
    Ronny Bennett Sr. May 03, 2010

    You will have to pull the tank,sorry,but it does sound like the fuel pump screen is restricted,but check the return line to the tank,blow back threw the tank on the return line only.Replace the pump,and the screen,you do not want to go back in there,and flush the tank out too.Submit the thumbs up,and there should be an accept button.Thank you,and you seem to know the answers already,but just trying to confirm your solution.

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