Re: [DML] NEED HELP! Engine Runs Only for a few seconds
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Re: [DML] NEED HELP! Engine Runs Only for a few seconds



I would verify that you are actually getting fuel through the injectors. Pull the injectors one at a time and place them in a jar while attached to their lines, and with the pump running push down on the plate in the mixture control unit. You should see a steady stream of fuel that increases in volume the further down the plate is pushed. If there is no resistence on the plate, you could have a stuck piston in the mixture control unit. If you are not getting any fuel, then the engine is probably running from the bit of fuel that is injected by the cold-start injector. 

Elke Gazvoda <vgazvoda@xxxxxxxxxxxxx> wrote:          Our 1981 Delorean has not been driven in 6 years (in storage). Trying
to get it going again.

Engine runs only after cranking for a few seconds then dies.

All fuses are OK. 

Checked RPM relay to force fuel pump to run and seems to keep fuel
system pressureized and enough flow thru the fuel filter while
cranking. Pressure seems to remain OK at the injectors.

Changed the idle speed regulator and no help. 

Also checked for spark using a timing light at coil HV output and at
the plugs. Keeps firing while the engine is cranking and while it is
dieing.

Also checked the Thermo Time Switch function by grounding the black
blue wire. Still would run and then die. No change.

Any clues as to what to troubleshoot next?

Is it time to get a pressure gauge and verify the 75 PSI in the system?

Thanks...Vern 



         

       
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