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GMC V6 and V12 Engines Engine repair and rebuilding |
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#21
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In my 50 years of driving V6 powered GMCs, I've only experienced one fuel pump failure while driving. I credit most of that good fortune to using nothing but ethanol-free gasoline. The one failure I did have happened in stop-and-go traffic on the interstate in Seattle. Pulling onto the shoulder would have been difficult at best due to vehicles all around me. Fortunately I overcame my initial panic and remembered to flip on the toggle switch for my backup electric fuel pump. The engine restarted before I had even coasted to a stop, so I didn't even get honked at.
Thus, my recommendations -- use ethanol-free gas and install a backup electric fuel pump for emergencies.
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Ed Snyder Medford, Oregon 1962 1000 Pickup 401M & Muncie 318 with overdrive 1962 K1000 Suburban 401M & SM420 1967 CM1500 pickup 351E & NP435 |
#22
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Good idea to check for the original style filter, but remember he bypassed everything when doing the gas can trick. That is how you troubleshoot. Isolate a part so as to either eliminate it as a cause, or prove it is the cause.
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#23
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fellas, the original AC-Delco fuel pump # for all 305-432 & 478 gas pumps are as follows: 1960-65 4755; 66-74 40050. This was the only two numbers we stocked at the dealership and for years afterward. I hope this helps with the identification process.
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#24
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Unfortunately, most, not all, A/C Delco parts are made off shore. Mostly China. Only N.O.S. will be USA. N.O.S. fuel pump can have a dried out diaphragm.
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#25
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Just installed this weekend, Precision #M20021; fits as advertised!
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#26
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azken, I only provided the ac/delco #'s for a reference point and where the break in production was in the pumps.
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#27
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Lewis, Just to avoid any confusion, wasn't the 60-65 fuel pump #4754?
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#28
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you are right, snazzy. I have fat-finger syndrome again.
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Thread | Thread Starter | Forum | Replies | Last Post |
Re: [6066 GMC] 305E Fuel Pump Location Question | Archiver | Previous Forum Posts | 0 | November 11th, 2004 02:50 AM |
Re: [6066 GMC] 305E Fuel Pump Location Question | Archiver | Previous Forum Posts | 0 | November 11th, 2004 02:48 AM |
Re: [6066 GMC] 305E Fuel Pump Location Question | Archiver | Previous Forum Posts | 0 | November 11th, 2004 02:35 AM |
Re: [6066 GMC] 305E Fuel Pump Location Question | Archiver | Previous Forum Posts | 0 | November 10th, 2004 12:53 AM |
305E Fuel Pump Location Question | Archiver | Previous Forum Posts | 0 | November 10th, 2004 12:34 AM |