 Bench test a fuel pump, how to do it (if possible) |
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| Rav914 |
 May 29 2007, 01:53 PM
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#1
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All-weather fan  Group: Members Posts: 740 Joined: 15-April 07 From: WA Member No.: 7,669 Region Association: None  |
Here's the situation: I recently purchased a 50,000-mile '74 1.8 that has been sitting for 12 years. I have the engine out for maintenance prior to starting it up. Yesterday I was replacing the fuel lines to/from the fuel pump and got to thinking - if this thing is not working it'll be much more difficult to replace with the engine installed. Best to find out now if it doesn't work.
So, is there a way to "bench" test the pump with the engine out? Electrical systems are not very intuitive to me. Thanks. |
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| Joe Ricard |
May 29 2007, 02:49 PM
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#2
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CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
Hook 12V to it, the contacts are marked + and -
also there is markings for suction and return and discharge. Oh and no smoking |
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| Rav914 |
May 29 2007, 02:59 PM
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#3
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All-weather fan Group: Members Posts: 740 Joined: 15-April 07 From: WA Member No.: 7,669 Region Association: None |
I was hoping it'd be that simple. Thanks!
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| Katmanken |
May 29 2007, 07:59 PM
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#4
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You haven't seen me if anybody asks... Group: Members Posts: 4,738 Joined: 14-June 03 From: USA Member No.: 819 Region Association: Upper MidWest |
Um, they are designed to run with gas in them to avoid damaging the pump and to avoid explosions. I have been known to pump gas between two 1 gallon cans on a bench.
Ken |
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| 914Sixer |
May 29 2007, 09:24 PM
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#5
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914 Guru Group: Members Posts: 9,123 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region 
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I build a small loop just like way the fuel system runs. You can even put a pressure gage in line to check the output.
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