[DML] Continuing: won't start (Testing David T's theory)

["content22207" <brobertson@xxxxxxxxxxxx>]

This is a replacement fuel distributor, isn't it? As I recall that's
why David theorized *POSSIBLE* incorrect calibration.

Try jumping the RPM relay to force the pump on (car doesn't even need
to be energized), then lower the air sensor plate by hand. The pulled
injector should start spraying at some point. If it doesn't spray you
could have a main line pressure problem. Let the pump spin like that
for several minutes, then try again. If it only sprays after spinning
for a while you've definitely got a main line pressure problem
(assuming fuel is reaching the distributor in the first place). The
injectors don't even crack until some PSI I can't remember (50 or so?)

The air sensor plate on an empty fuel distributor is very floppy with
no resistance. Fuel in the upper chambers will make it perceptively
harder to lower. Properly functioning CI also makes a weepy/whining
noise as the plate is lowered under pressure.

Potential causes for a main line pressure problem:
1) Bad fuel pump or constricted tank pickup
2) Too much fuel leaking past piston in the accumulator.
3) Bad or leaking regulator in the fuel distributor

To test the accumulator, disconnect its drain hose and jump the pump.
Much more than a few drops coming out is bad.

You may have reached the point where further diagnosis requires a
pressure gauge. The Bosch setup includes banjo fittings. John Hervey
sells individual fittings to use a generic gauge.

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, advantics@xxxx wrote:
> I put some fuel into the air flow meter plate and the car started up
for a 
> few seconds and then died. I pulled an injector and plugged the hole
that it 
> came from and began to adjust the 02 screw. I adjusted clockwise a
turn at a 
> time, and each time I got no fuel out of the injector. I went a
total of 5 turns 
> before I stopped. I'm getting fuel to the distributor (a ton) and
through the 
> could start valve, but nothing to the injectors. The only thing I
didn't 
> replace on the fuel system was the accumulator. I didn't think there
was anything 
> wrong with it, could I be wrong?
> 
> John 5326 & 1383
> 
> 
> [Non-text portions of this message have been removed]




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