Location: Thousand Oaks, CA
Posts: 242
My VIN: 16563
I start and run the car once every couple weeks or so. Randomly one day the car didn't actually start as if the motor isn't getting fuel. Checked the obvious gas in the motor and good battery etc. It cranks very strong so I guess I want to first check all the quick things first. Fuse, fuel getting to the fuel distributor etc. Any suggestions of the most common things this could be?? Thanks guys
Nathan
1983 Delorean-auto, black/gray int. 38k miles
Location: Leonardtown, MD
Posts: 9,006
My VIN: 03572
When your trying to start the engine, the fuel pump is running. If you remove the air cleaner and tap on that air plate after trying to start the engine, it would have pressure if getting gas. Actually if it has pressure, give it a quick press and try starting the engine again. The "press" would inject fuel from all the injectors.
Location: Thousand Oaks, CA
Posts: 242
My VIN: 16563
My concern is in your first sentence that the fuel pump is actually NOT running when I'm trying to start the engine. However it sounds like your test will tell exactly if the fuel is getting to the injectors at all. Ill try this when I'm home in a couple hours and report back.
Thank you
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1983 Delorean-auto, black/gray int. 38k miles
Location: Thousand Oaks, CA
Posts: 242
My VIN: 16563
I'm wondering if the problem isn't the Bosch 12v regulator
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1983 Delorean-auto, black/gray int. 38k miles
Location: Thousand Oaks, CA
Posts: 242
My VIN: 16563
no pressure on that air plate while trying to start the motor or pressing the accelerator. I also checked the fuel pump fuse but it made no difference in or out. Is there a place I could squirt gas in to just to get the car started and confirm that spark, regulator, spark plugs arent the issue?
1983 Delorean-auto, black/gray int. 38k miles
Location: Rowlett, TX
Posts: 1,533
My VIN: 5482
If you jump the RPM relay, you can manually test the fuel pump. If you can hear the pump running, check the mixture plate like Dave said. If its not firm, you have an issue which could be a number of things. When was the last time the engine ran?
Jeff
Location: Thousand Oaks, CA
Posts: 242
My VIN: 16563
I would start it every couple weeks or so. but there was at least a good month of it not being started when I noticed this. Never had the issue and it used to start right up. Ill try the jump you mentioned. What exactly am I jumping? I have the fuse chart in front of me. But I smell zero gas going anywhere and pretty sure Im not hearing the fuel pump
1983 Delorean-auto, black/gray int. 38k miles
Location: Thousand Oaks, CA
Posts: 242
My VIN: 16563
I just went to turn the key to start it and hear anything that sounded on or running. The only humm I heard was from this module. It would no longer humm when I disconnected this plug
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1983 Delorean-auto, black/gray int. 38k miles
Location: Thousand Oaks, CA
Posts: 242
My VIN: 16563
unless this plug is responsible for power to the fuel pump, there are no other noises that remain on in the car with the ignition on.
1983 Delorean-auto, black/gray int. 38k miles
Location: Leonardtown, MD
Posts: 9,006
My VIN: 03572
That plug you show is your idle motor. The idle motor normally does buzz when you turn the key to on.
Most stock RPM relays will prime (run) the fuel pump for one second when you turn the key to on. Some stock RPM relays will not do this prime.
The "jumper" is when you pull the connector off the RPM relay and jumper the two large dia. wires on that connector (brown to white/purple). That should run the fuel pump without needing to turn the key to on and you should hear it running.
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Dave M vin 03572