Question about 1994 Chevrolet S-10
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Posted on Jan 02, 2017
Fuel enrichment? The TBI /ECM system increases fuel mixture when cold starting. If you have low fuel pressure or dirty injectors it will impeed this function. The computer will continuely try to solve but cannot do to the low fuel function, should get it fixed right away as it will burn out the phase of the computer that controls this. Fuel pressure test first, it should hold between 9 -13 lbs of pressure. If you have not changed the fuel filter inline located on the frame do so $10 and it could be the fix. You can hookup a timing light and point at the injectors and this will illuminate the spray making it easier to see, the spray also will run in time with the light so if it is not there is a sequence problem between modulator, computer and possibly a crank/cam position sensor. Good Luck
Posted on Nov 19, 2010
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