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95 blazer CPI vortec 4.3l vin W timing problems?

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  • #507500
    Brian KohutekBrian Kohutek
    Participant

      Did intake gaskets marked distributor accidentally turned engine with distributor out of engine also new fuel injectors an internal fuel lines installed-62psi fuel rail pressure hot spark new wires, plugs, cap, an rotor TDC on compression stroke on #1 cylinder timing marks aligned with both marks on cover can not get engine to run at all distributor rotor set pointing at #6 pointer on distributor housing. Still nothing have pulse at injector harness tested with test light ???

    Viewing 4 replies - 1 through 4 (of 4 total)
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    • #507726
      R .G.Young,JrR.G.Young,Jr
      Participant

        if you know that you have fuel pressure and spark, and the dist is in the right position, you may want to try a compression test to see if maybe the engine has jumped timing. i/e low compression. the main four components for and engine to run is fuel, air, spark, and compression.
        Also is there any backfire when the engine is turning over? or does it sound like the engine is free wheeling? what kind of problems did the vehicle exhibit before the repairs?

        #507749
        college mancollege man
        Moderator
          #507782
          Brian KohutekBrian Kohutek
          Participant

            Have not done compression test motor ran very good before intake gasket job I turned motor backwards to check play in timing chain there was quite abit but I never felt it slip as I turned balancer with my bare hands free wheels when using no starting fluid I checked injected fuel pulse I removed all 6 nossels as engine revolves while cranking the spray quite a bit of fuel with starting fluid it back fires violently through intake throttle flap louder then a 2 barrel shock gun!

            #507787
            R .G.Young,JrR.G.Young,Jr
            Participant

              I suggest you do a compression test.. that will let you know the integrity of the engine. if it passes this teat, then bring the engine cylinder one to tdc on the compression stroke,i/e piston pushing air out of #1 cwhen turning engine over, be sure the piston is at tdc of the compression stroke and set the diatributer with the rotor pointing at the number one position on the dist. after this is done, your engine should be #1 cylinder at tdc, and dist completely mated to the engine block and the rotor pointing to the #1 position on the dist. bolt the dist down but leave loose enough to turn the dist with some resistance to do final adjustment on timing if the engine starts and runs.once completed be sure to tighten dist bold down. please keep posting to let us know how it is going.

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