Newbie-intro

[J. Forbes]

At 09:50 AM 1/10/97 -0600, John Hess wrote:
>Five and seven on the small block fire consecutively.  It is generally 
>advised NOT to run these two wires adjacent to each other due to 
>cross-fire considerations.
>
>You will find that the MAP sensor engine is rather sensitive to engine 
>changes (much more so than the MAF, which is why I recommended the MAF 
>with the '89 chip).  I will not pretend to try to diagnose your engine 
>from my desk, but this is a consideration.  If the distributor looks 
>funky, replace it!...AND the coil...AND the wires.  The injectors 
>might be suspect, but I would look at the connections before I pulled 
>the injectors (much easier).  Also listen for air.  This system is 
>famous for air leaks.
>
>Good luck.

Thanks!

I am using a 91 computer setup....which is designed to use only the MAP
sensor, not the MAF sensor.

The injectors are bad, we took the two back to the place that "tested and
cleaned" them before and they decided that they really dont work after all.
Thats another story....

The plug wires are new, and routed well enough to not cause problems.  I did
replace the cap and coil, of course it made no difference, as I suspected.
To isolate the problem to the injectors, I also used a stethoscope, and the
two bad ones weren't "clicking" like the rest-- also, disconnecting the
wires from these two injectors didnt make any difference at all in the way
the engine ran.  Combining this info with the exhaust gas being just fine, I
came to the conclusion that the injectors werent working.

We found some used ones at another shop in town, to see if it really fixes
the problem, and at $50 for the pair this is an affordable solution   :)
I'll let you know if it runs on all 8.  Sure seemed strong as a V-6, cant
wait to drive it as a V-8!

Jim
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Jim and Janet Forbes                          jforbes at primenet.com
Sierra Vista, AZ             URL= http://www.primenet.com/~jforbes
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