My FI Frustrations Continue, Still have engine cutting out |
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My FI Frustrations Continue, Still have engine cutting out |
dralf |
Jun 15 2019, 01:26 PM
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#1
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Member Group: Members Posts: 230 Joined: 24-January 04 From: Dayton, Oh Member No.: 1,597 |
I keep purchasing components for my 1975 D Jet system but to no avail in solving the mystery of why it will sometimes cut out when the reves are about 2500 and the engine is under load. For those who have read my earlier posts, I now have new wiring harness, coil, points, condenser, cleaned the dizzy, new Auxiliary Air Valve, and cleaned all wire connections. Also replaced the fuel filter. My recent purchase was a new MPS for mine had a diaphragm leak. I drove around the block and was happy for the first lap since my adjusting the valves and timing seemed to improve acceleration. Unfortunately by my second lap the engine started to randomly cut out as it have before. My path forward is to replace the vacuum advance diaphragm on the dizzy which I found a leak. also to check the cylinder head temperature sensor, and the throttle position sensor. I there anything else I should be checking or replacing ? I am thinking about setting up my timing light inside the cabin so I can verify that during those times where the engine cuts out the spark plugs are still getting power. I hate to think my ECU is bad. Also where or who can check that out if it comes to that ?
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dralf |
Jun 19 2019, 05:06 PM
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#2
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Member Group: Members Posts: 230 Joined: 24-January 04 From: Dayton, Oh Member No.: 1,597 |
Another day working on the baby. I took a spin around the block a few times with the fuel pump connected to a volt meter. After a few laps the engine started to sporadically started to cut out and the voltage to the pump went to Zero each time. So the pump and the fuel tank are not the issue. Before the rain started I had a chance to pull the pump relay and check it using the headlight. It seems to be OK. I now am trying to study what activates this relay. As always I am appreciative of any suggestions where to look next. I recall someone posted his issue with the fuel pump not activating and as a temporary fix he hot wired it. I may need to go this route if I finally need to take this car to a shop. Not ready to quit yet.
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