Re: low fuel pressure

[jtrealty@xxxx]

Remove the 3rd line (the return to the tank) from the fuel accumulater 
and see if fuel is comming out of it as you run the pump. It is 
becomming very common to see the accumulaters fail after 20+ years of 
service. Sitting with fuel in them for prolonged periods of storage 
seems to be hard on them as opposed to ones that remain in continuos 
service. You could also have plugged or kinked fuel lines. Sometimes 
when inexperienced people work on the fuel system they inadvertantly 
twist and kink the lines without realizing it, especially in the area 
of the fuel accumulater. I also once found a banjo bolt that was 
replaced by an ordinary bolt (without the holes in it that allow fuel 
to flow through). I guessed that whoever worked on the motorcycle 
before me lost the proper bolt and substituted what they had. The 
point here is since you have a non-running "D" you cannot take 
anything for granted. If after you replace the fuel accumulater and 
CAREFULLY cut it open (there is a large spring inside) you can check 
the diaphram to see if it is there. When I remove them I shake it and 
most of the time little bits of black rubber come out indicating the 
diapghram disintegrated. After replacing the fuel accumulater it is 
probably a good idea to again replace the fuel filter as the one that 
is currrently on the car is catching all of the parts of the bad fuel 
accumulater.
David Teitelbaum
vin 10757



--- In dmcnews@xxxx, greg@xxxx wrote:
> Hello all,
> 
> I recently purchased a non -running D (vin 6295). It has 80,000mi 
was 
> driven regularly until 1996. I've narrowed it down to a fuel 
problem.
> replaced the fuel pump and filter, cleaned the tank, etc. checked 
> the fuel pressure from the center line of the fuel dist. to the 
cpr--
> less than 10 psi. same on the port coming from the fuel filter to 
> the dist. I wanted to see if the new pump might be the problem so I 
> hooked the pressure gauge to the incoming fuel line without 
> connecting it to the dist.-- effectively creating no return path.
> when i jumped the relay(using a remote starter switch so I could see 
> what was going on immediately) I had fuel pump out of the now opened 
> port on the fuel dist (backfeeding from the return line??). After 
> searching the archives and checking the manual ( and not really 
> finding this problem addressed) it would appear that the fuel 
> accumulator has a blown diaphragm allowing the fuel to return to 
the 
> tank without pressuizing the system. Is this a valid theory? Is 
there 
> a simple way to check.
> 
> Greg