[DML] Re: Fuel accumulator Test

["Dave Swingle" <swingle@xxxxxxxxxxx>]

I don't understand that comment. All the fuel hoses are full of fuel 
all the time. By clamping off that relief line you will stop the 
accumulator from allowing pressure on the high side to bleed down 
quickly. This is not a permanent fix by any means but is a very 
legitimate way to test for the problem. 

The cold start injector,although electrically operated, still 
requires pressure from the fuel pump to work. It does not have it's 
own pump. The reason it works is that it will let fuel thru at much 
lower pressure than the mechanical injectors. But it still needs 
pressure and a working fuel pump.

Dave Swingle

--- In dmcnews@xxxxxxxxxxxxxxx, "content22207" <brobertson@xxxx> 
wrote:
> This test may not solve Dani's hot start problem if the accumulator
> piston is leaking too badly -- will simply fill up with fuel BEHIND 
it.
> 
> Alternative test is to pull that hose loose, jump the RPM relay, and
> see if fuel comes out (from the accumulator).
> 
> That hose loops back to the tank via CI return line.
> 
> Is not normally supposed to have fuel from the accumulator in it.
> 
> If fuel leaks past the piston in the accumulator, CI has little/no
> pressure until engine is running and RPM relay closes (that's why 
the
> engine won't start -- no fuel is coming out of the injectors). 
Isn't a
> problem for the cold start injector because it's electrically 
operated.
> 
> Bill Robertson
> #5939
> 
> >--- In dmcnews@xxxxxxxxxxxxxxx, "Dave Swingle" <swingle@xxxx> 
wrote:
> > Yes - on one end of the accumulator there is a single hose. Clamp 
it 
> > with a pair of needle-nose vice grips. If this fixes the problem 
the 
> > accumulator is bad. If it does not fix the problem, it's probably 
the 
> > check valve in the fuel pump.
> > 
> > Dave Swingle
> >




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