 Factoru 914-6 fuel pump with low pressure, Has anyone taken one apart and fixed them. |
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| toolguy |
 Nov 21 2015, 08:49 PM
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#1
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Senior Member  Group: Members Posts: 1,275 Joined: 2-April 11 From: San Diego / El Cajon Member No.: 12,889 Region Association: Southern California 
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I've got an original 6 with the factory fuel pump. . after sitting for 6 months, the pump runs but has low fuel pressure on the carb side. . Has great pressure on the tank return side. .no line obstructions. . . tested out of the car. . . won't lift fuel over level in the tank. . . anyone ever tried to adjust or repair one
Read down. . . Fixed !!! Attached thumbnail(s) 
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| McMark |
Nov 22 2015, 07:11 AM
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#2
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
I was able to find the o-rings in fuel-safe Viton, and have been able to get into the pumps to replace them. But there are two MAJOR issues with resealing a pump.
1. The outer housing is crimped onto the motor. These crimps are very difficult to pry apart and even harder to reinstall. If I were to even have a hope of making a reseal job work, I would expect to make special tooling to release and make those crimps. 2. The small silver 'button' on the side is the internal pressure relief. That cover is also crimped on, so there is a similar issue to #1, but also there is a seal inside that I haven't located (or tried). The best bet is to call Fuel Injection Corp (925-371-6551). They rebuild the 914-4 pumps, including machining a new pressure relief cap (button) from solid aluminum. They should be able to rebuild your pump. Keep us posted. I have two 914-6 pumps that need rebuilding. |
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| rgalla9146 |
Nov 22 2015, 08:53 AM
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#3
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Advanced Member Group: Members Posts: 4,673 Joined: 23-November 05 From: Paramus NJ Member No.: 5,176 Region Association: None
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QUOTE(McMark @ Nov 22 2015, 08:11 AM)  I was able to find the o-rings in fuel-safe Viton, and have been able to get into the pumps to replace them. But there are two MAJOR issues with resealing a pump. 1. The outer housing is crimped onto the motor. These crimps are very difficult to pry apart and even harder to reinstall. If I were to even have a hope of making a reseal job work, I would expect to make special tooling to release and make those crimps. 2. The small silver 'button' on the side is the internal pressure relief. That cover is also crimped on, so there is a similar issue to #1, but also there is a seal inside that I haven't located (or tried). The best bet is to call Fuel Injection Corp (925-371-6551). They rebuild the 914-4 pumps, including machining a new pressure relief cap (button) from solid aluminum. They should be able to rebuild your pump. Keep us posted. I have two 914-6 pumps that need rebuilding. Got a couple myself. Anyone using one of the new Pierburg carb fuel pumps ? |
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Posts in this topic
toolguy Factoru 914-6 fuel pump with low pressure Nov 21 2015, 08:49 PM
914Sixer Has fuel tank screen been replaced recently? May ... Nov 21 2015, 09:14 PM toolguy another issue I found, no screen in the tank, look... Nov 21 2015, 10:37 PM
Mark Henry
Anyone using one of the new Pierburg carb fuel ... Nov 22 2015, 10:31 AM porschetub
Anyone using one of the new Pierburg carb fuel... Nov 23 2015, 02:49 AM 914Sixer Collapsed/missing screen parts makes me wonder if ... Nov 22 2015, 07:41 AM GeorgeRud I've had great results with the Pierburg pumps... Nov 22 2015, 09:08 AM Dave_Darling The Six conversion section was written a rather lo... Nov 23 2015, 09:29 AM toolguy So the answer is, YES, they can easily be taken ap... Nov 23 2015, 12:47 PM pete000 I had an old 914-4 pump laying around and took it ... Nov 23 2015, 02:48 PM pete000 As for no filter this reminds me. The Porsche 914-... Nov 23 2015, 02:51 PM rgalla9146 Factory ?
Not original on a 6, AFAIK only the s... Nov 23 2015, 04:52 PM toolguy the o-ring in the crimp cap appeared to the a squa... Nov 23 2015, 06:49 PM |
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