Re: WHAT IF.... [DML] Re: HOT START HELL -- Nothing Works!

[Soma576@xxxx]

In a message dated 4/8/02 10:45:22 PM Central Daylight Time, dherv10@xxxx 
writes:


> Jason, My car has sat for sometimes a month and still start right up. Does 
> anyone know how long the pressure can stay on the syste. I don't. Call if 
> you 
> need any help with the adjustment.
> 

John,

when my car was having running problems last year (which i have since 
completely rectified, thank god), i found that the system held measurable 
pressure on the order of a few hours. in the shop manual section D:02:01 you 
can see that the system must hold 3.3 bar immediately after engine shut down 
once the pump stops. this is assuming that you had adequate running fuel 
pressure. after 10 minutes, the system should be holding at least 1.7 bar. 
i am postive that if you drove your car home one evening, there would be very 
little if any pressure the next morning.

the cold start valve, as someone else stated, is supposed to enrichen the 
mixture when the engine is cold. this makes sense because by the time the 
engine is cold, there is no more fuel pressure in the lines. and if there 
is, it is a negligable amount because obviously it doesn't make starting 
difficult with pressure AND a cold start burst.

Andy

Soma576@xxxx
1982 DeLorean DMC-12 VIN#11596
Fargo, ND 58102


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