Re: [DML] Re: more info on my car...

["chris" <chris@xxxx>]

In the technical manual it states the system has 29 gallons per hour running
thru the system which is basically 2 litres a minute. If Andy had 2 litres
back in a minute then all is OK and start checking the Control Pressure with
a gauge.
If there was a blockage then in 1 minute there would obviously be less fuel
back to the pump, if more than 2 litres then either the pump is working to
hard or the primary CPR needs adjusting.

A little tip DMC Joe gave me....Pull out the injectors and putting them
into jars, then run the fuel pump. When the air flow sensor is closed the
injector should be closed with maybe just a SMALL amount of fuel forming on
the injector. Then as soon as you touch the air flow sensor the injectors
should start spraying (cone shaped), and be proportional to the pressure on
the air flow sensor.

If the CPR was faulty this could cause the car to run rich all the time and
like David mentioned cold start/cold acceleration problems.

Like David said Andy needs to eliminate the Control pressure by using a
gauge (as per workshop manual ) connecting it inline with the fuel line from
the top centre of the fuel distributor and the CPR ( left hand rocker cover
behind the oil filler ).

A quick test of the Lambda system.. Andy said it was buzzing so when the car
is at running temp, press and hold the microswitch by the throttle spool and
the engine tone should change and the FV will buzz at a constant.

I thought at first you had opened the fuel distributor, just a note do not
remove the 3 screws that hold the 2 parts of the distributor together. Once
you open it you will never get it to seal again and you will need to spend
$500 to get it repaired by a Bosch centre.

regards

Chris Spratt
Vin 16327
DOC UK


----- Original Message -----
From: <jtrealty@xxxx>
To: <dmcnews@xxxxxxxxxxxxxxx>
Sent: Sunday, March 25, 2001 10:34 PM
Subject: [DML] Re: more info on my car...


> Just because you are getting fuel flow from the return line doesn't
> mean it isn't restricted. You NEED to get a gauge setup on the car so
> you can find the source of the problem. I think you will find it to be
> either a resticted return line or a stuck Primary Control Pressure
> Regulater. The warm-up regulater is the control pressure regulater on
> the left valve cover and the primary control pressure regulater is on
> the side of the fuel distributer. If you assume the test you performed
> gave you 2 liters of fuel when you should have had 3 then you would
> know with certainty that the line is blocked. Unfortunatly I do not
> know the return flow rate so I don't think that is a valid test. If
> the system pressure is too high it can only mean that the Primary
> control pressure regulater either isn't working or the return line is
> restricted or blocked. I think the regulater you took apart is the
> control pressure regulater (warm-up regulater) and I don't think it is
> the source of your troubles. Failure of this component usually results
> in hard cold start conditions and trouble with cor fuel
> enrichment.
> David Teitelbaum
> vin 10757
>
>
> --- In dmcnews@xxxx, Soma576@xxxx wrote:
> > Hey All,
> >
> > today i took off my control pressure regulator and opened it up. it
> appears
> > to be quite clean, and the screen is clear. i only unscrewed the
> bottom four
> > screws and checked it in there. i blew air thru the vacuum nipple
> on the
> >
> > Andy
> >
> > Soma576@xxxx
> > 1982 DeLorean DMC-12 VIN#11596
> > Fargo, ND 58102
> >
> >
> > [Non-text portions of this message have been removed]
>
>
>
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