I thought I would share a bit of my plight with the group in the hopes that it will save someone some time and grief!
I replaced my old mechanical fuel pump with a new electric one from MM. I chose the block mounted version and after painfully mounting it with only about an inch of side clearance (Ericson 29) I discovered that it blocked the throttle cable from attaching to the carburetor! So on a rainy day, prior to sailing weather, I decided to remove it from the engine block and mount it to the rear of the engine compartment. After all mounting, electrical and plumbing connections were complete, I turned the key. There was no clicking pumping sound. Thus I started troubleshooting fuel to the pump, I bypassed the oil pressure switch, primed the pump with a fuel bulb, etc.--all to no avail! After a couple of hours of working on it, it dawned on me that it was an electric pump, but only had a single wire to attach to the coil (via the oil pressure switch)--thus it needed a ground! I added a ground wire to the metal mounting bracket and walla, I had clicks, fuel, my A4 purred and all was well.
Of course it was a duh moment, but again, my sharing might save someone enough time to drink one more beer! Cheers!
I replaced my old mechanical fuel pump with a new electric one from MM. I chose the block mounted version and after painfully mounting it with only about an inch of side clearance (Ericson 29) I discovered that it blocked the throttle cable from attaching to the carburetor! So on a rainy day, prior to sailing weather, I decided to remove it from the engine block and mount it to the rear of the engine compartment. After all mounting, electrical and plumbing connections were complete, I turned the key. There was no clicking pumping sound. Thus I started troubleshooting fuel to the pump, I bypassed the oil pressure switch, primed the pump with a fuel bulb, etc.--all to no avail! After a couple of hours of working on it, it dawned on me that it was an electric pump, but only had a single wire to attach to the coil (via the oil pressure switch)--thus it needed a ground! I added a ground wire to the metal mounting bracket and walla, I had clicks, fuel, my A4 purred and all was well.
Of course it was a duh moment, but again, my sharing might save someone enough time to drink one more beer! Cheers!
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