Re: [DML] Lack of fuel pressure
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Re: [DML] Lack of fuel pressure


I have found that the FD is both a device with a lot of needle size
ports that easily clog and containing 6 small rubber-like diaphrams
that easily could deteriorate with the wrong solvent or with time.

Conversely, I have have been able to recover a few fuel distributors
that had been setting for several years without any fuel stabilizer. In
fact, the FD's seem more durable and more cleanable than I ever

Without any large numbers to justify a statistical support for what's
the best cleaning method, I have had the best success with soaking in
Sea Foam for a week or two. I know the soak has done its job when the
plunger is no longer stuck in the distributor. (Be careful that the
plunger does not drop or get scratched against anything (even a paper
towel)).  I also spray all the port with Sea Foam Deep Creep before
submerging in the Sea Foam Injector Cleaner.  After re-installing on
the car, I add a can of the same cleaner to the fuel tank after each
cleanup for about 3 or 4 fills of fuel.  

If that doesn't work, I send it to a Bosch authorized rebuilder who
rebuilds the unit for about $350.

A word of caution from someone that will try to fix almost anything: 
Despite how much you are tempted, do NOT try to open the FD or attempt
to do an internal fix.  This repair takes special expertise and
equipment and is an extreme safey hazard.

Good luck,


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