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Old 04-24-2017, 06:07 AM
170 driver 170 driver is offline
 
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Location: Walterboro SC
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Default alternative for facet fuel pump carburated engine

Does anyone have any experience with other types of low pressure electric pumps? I'm trying to find an alternative to the facet pump. There seems to be a lot of failures. Mine included. Is anyone using a filter before the inlet to the pump?
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Old 04-24-2017, 06:17 AM
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Originally Posted by 170 driver View Post
Does anyone have any experience with other types of low pressure electric pumps? I'm trying to find an alternative to the facet pump. There seems to be a lot of failures. Mine included. Is anyone using a filter before the inlet to the pump?
Same pump since May of 1993, no problem. I do have filters ahead of the pump.
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Old 04-24-2017, 06:21 AM
170 driver 170 driver is offline
 
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Mel, does your filter have AN fittings or is it rubber line and clamps? I was trying to stay away from rubber and use an fittings on everything.
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Old 04-24-2017, 06:56 AM
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I use rubber hoses with clamps. YMMV.
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Old 04-24-2017, 07:33 AM
Tomcat RV4 Tomcat RV4 is offline
 
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You can get same pump at most auto parts store, tell them it's on your tractor !
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Old 04-24-2017, 08:38 AM
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snopercod snopercod is offline
 
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Does it look like this, or is it one of the "cube" types?

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Old 04-24-2017, 08:41 AM
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Sam Buchanan Sam Buchanan is offline
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Quote:
Originally Posted by Tomcat RV4 View Post
You can get same pump at most auto parts store, tell them it's on your tractor !
Be careful, some Facet pumps at auto parts houses contain a check valve to prevent fuel flow with the pump off. Check the spec sheet for the part numbers with correct fuel flow and no check valve:

http://www.aircraftspruce.com/catalo...?clickkey=4377

http://www.facet-purolator.com/cube-fuel-pumps.php
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Old 04-24-2017, 09:05 AM
170 driver 170 driver is offline
 
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it is a cube one, rattle pump. 4 to 6 psi I believe. I have a Van's replacement ready to go back in but I wanted to see if there was a better one out there.
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Old 04-24-2017, 06:08 PM
rv7charlie rv7charlie is offline
 
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I suspect that you hearing about 'a lot of failures' is a simple quantity measurement, and not a percentage measurement. When there are thousands (or hundreds of thousands, or millions) of a device in operation, there will be 'a lot' (in quantity) of failures. Failure *rate* is another matter entirely. And if you read carefully, it's fairly common for those who bothered to investigate their 'defective' pumps to discover that the only thing wrong with them was a piece of trash stuck in the pump (hardly the pump's fault).

Those pumps are actually designed for continuous duty in various non-aviation environments, so if fed clean gas, most will easily last the life of the airframe when used as a backup/boost pump.

Hey Sam, I might be wrong, but aren't you thinking about the PSO (positive shutoff) valve, and not the check valve? If I understand it correctly, the check valve shouldn't prevent flow with the pump off; it just prevents back-flow if you have a pair of pumps plumbed in parallel.
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Old 04-24-2017, 06:41 PM
170 driver 170 driver is offline
 
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Yes I agree about the percentages, but there are more than a handful of failures documented on this site and only one could be disaster. I'd prefer to use another pump if there is another proven option available. Mine probably has trash in it too and I'll put filters before the fuel selector in both tank lines now and replace the pump.
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