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Thread: 1989 Buick Le Sabre Starting Problems:Update

  1. #1
    Join Date
    Nov 2006
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    1989 Buick Le Sabre Starting Problems:Update

    Well,

    I checked for fire, by pulling a plug and it looks to be firing, so I'm assuming its a fuel issue. When I turn the key to the on position, I can hear the fuel pump kick on, so my next guess is the fuel filter. I've heard that if you cannot blow through a fuel filter, then it's time for a new one. So, that's my next step I guess...Any other suggestions or tips?

    Thanks alot...

  2. #2
    Join Date
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    You are correct on the fuel filter and I would pour the fuel into a clear glass to check for water and trash .
    If you check your fuel pressure look for the pressure to hold ( 28 to 36 psi ) after you turn the key off . If it does not hold and drops to zero psi and you have to crank to build the pressure up to crank the eng.
    There is a check valve in the fuel pump that is not seated ( no need to replace pump ) then find the fuel return line at the T/Body ( 5/16 return 3/8 inlet ) and pinch the line off with vicegrips etc. ( donot damage line ) and try to start eng. fuel pressure should go to 80 psi and seat the check valve . HTH I have saved customers from having to replace their fuel pumps using this method , hope it works for you ..
    Sorry for the long reply.
    Guyopel
    The early bird gets the worm but the second mouse always gets the cheese.

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