Question about 1996 Chevrolet Blazer

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1996 blazer will crank when cold but will not start. I spray starting fluid in air cleaner and it starts right up. once it is warm it will keep starting. Have replaced coolant sensor but still have same problem.

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This could be many problems. But here is one to try. Turn your key on and make sure your fuel pump runs for 3 seconds. It will hum then quit. If you do not hear the pump running with the key turned on, replace fuel pump relay. This may solve your problem.

Posted on Sep 25, 2009

  • eloy83 Feb 09, 2011

    sometimes you will still hear the pump but it will still not start. thats because the fuel pump has a fuel pressure regulator on it that keeps pressure in the fuel line . if this goes bad u wont get the 45 psi needed to start your ride and therefore have to spray the intake to start it. you will have to replace fuel pump

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Posted on Jan 02, 2017

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Hi, if i understand you, do you have to crank the engine over, but it doesnt ignite and run. But if you come back in 10 min. It cranks and starts. First, is this issue happening if the engine is cold or when it warmed up. One of my trix to see of you have a fuel or ign
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sounds like your fuel pump is dead or you still have air in the system

however, even if you had air in the system, it purges itself when you try to start

therefore, a weak fuel pump cannot overcome the air block and your car won't start

however, you did not specify if the vehicle will stay running once started on carb cleaner

if the vehicle starts and stays running with the carb cleaner then you are probably dealing with a defective fuel pressure regulator


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