Re: what would a bad fuel accumulator do?

[dherv10@xxxx]

Andy, In short: The accumulator keeps fuel pressure on the system 
after the engine has been shut off to make it easier to start when 
turned back on. Cold or Hot when restarting. Cold start 
valve /thermal time switch aids in starting cold. Lambda unit along 
with 02 sensor adjust the air/fuel mixture to help smooth out the 
engine idle after a couple of minutes. The large swing could be the 
02 sensor trying thru the Lambda to correct the mixture. Air vaccum 
would affect the up and down if not correctly hood up or leaking.A 
lot of these things work together to ensure a good start and economy 
in running. The surging could also be the slow correcting of the Idle 
speed motor /speed ECU unit. Like cleaning off your desk. Track down 
the problem one at a time and fix it. Or like some do just get a leaf 
blower.
John hervey
www.specialtauto.com



--- In dmcnews@xxxx, Soma576@xxxx wrote:
> Hello guys,
> 
> as a summary, my symptoms are:
> 1. hard starting when cold
> 2. somewhat hard starting when warm, but MUCH easier
> 3. engine dies sometimes even after being warm
> 4. RPM's flow from 1000 to 500 when idling. as it approaches 500 
every time, 
> the engine nearly quits but it surges back up like it should.
> 5. extremely high fuel pressure - over 100 psi, probably closer to 
130 or 
> greater.
> 6. recently had a fuel line leak near the accumulator. i do not 
know if it 
> was a hose that connects to it or where exactly it was. i had the 
car towed 
> and 'they fixed it'. i had problems starting the day the leak 
happened. it 
> could have happened before or after i had trouble.
> 
> do these symptoms or problems have a good relation to what happens 
when you 
> have a failed fuel accumulator? i am still trying to figure all of 
this out.
> 
> thanks as always,
> Andy
> 
> 
> Soma576@xxxx
> 1982 DeLorean DMC-12 VIN#11596
> Fargo, ND 58102
> 
> 
> [Non-text portions of this message have been removed]