Engine swap new engine won't start

50

Asked by Jun 01, 2017 at 02:47 AM about the 2005 Chevrolet TrailBlazer LS

Question type: Maintenance & Repair

I have a 2005 trailblazer ls I swapped the
engine with an 04 trailblazer same engine
basically and I have used the fuel rail from
the 05 and the intake and exhaust manifold.
Also kept same pcm and all wiring
harnesses everything is hooked up it fires
pumps gas through injectors and cranks
really well almost starts but just won't timing  
is perfect checked that also and it throws no
codes with a basic scan tool so any help
would be amazing because I am banging my
head against the wall here

1 Answer

76,335

Check to see if there is a good spark, should be a white, blueish color spark, make sure you have the proper fuel pressure, it should be 56 to 63 lbs. Change out the fuel filter also, before testing the fuel pressure.

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