Hi Jonathon, thanks for the reply. I'm writing from
work so I can't visualize the truck at this time, but
the turbo has a fuel line entering it (low pressure,
about 5/16th) and a smaller line exiting it which is
semi-clear plastic. This small (about 1/8") line then
goes (as I can recall) to be tee'd into the injector
return lines. If I remember correctly the 5/16" feed
line originates at the injector pump. Anyway, my
injector return lines appear to have air in them and I
was wondering what type of pickup the in fuel pump
has. The tank is about 1/2 full; I was wondering if
the pickup is cracked and sucking air. (guess I'll
have to pull it) In the meantime I'm going to replace
the filters and inspect them. The truck actually
seems to run better than it ever did at it's best; it
also produces more black smoke which indicates more
fuel or less air and the air filter is clean. How can
you tell on your truck that the compensator was
bypassed; and could I temporarily bypass mine to see
if that is the problem? Thanks, Rick
--- jonathon <jemery@execpc.com> wrote:
> >... Also took notice that
> >the small return line from the turbo
>
> What return line from the turbo? fuel????
>
>
> > and the return
> >lines from the injectors had air in them. I never
> took
> >notice if this is normal or if it is new.
>
> You may be sucking air somewhere. I have run into
> this a number of other
> diesel vehicles. Although with the M35's in tank
> pump it would have to
> originate in the tank. Replace that short piece or
> rubber fuel hose that
> feed the pump with clear vinyl one (temporarily)
> and see if you are getting
> air in the fuel system from the in tank pump.
> Everything else in the fuel
> system is under pressure and thus should not be able
> suck air in.
>
> My compensator was bypassed by the army so I don't
> have any experiance or
> knowledge of them.
>
> good luck,
>
> je
>
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