 Where the heck is my fuel filter?!, Don't judge, I'm still new! Haha |
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| tvdinnerbythepool |
 Oct 3 2018, 08:15 PM
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#1
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Member  Group: Members Posts: 310 Joined: 24-July 18 From: Olympia, WA Member No.: 22,336 Region Association: Pacific Northwest 
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Alright guys, I am trying to replace my fuel filter....but I can't find it! (IMG:style_emoticons/default/screwy.gif)
It's a 1970 1.7 with the fuel pump relocated the front, behind the cover for the rack and brake master cylinder. I pulled that metal cover off the bottom of the car, I see the pump and hoses but no filter. Traced the lines in the engine bay....no filter. I suppose it's possible there isn't one installed, but does anyone else have an idea? On the plus side, I pulled my MPS and seems to be holding good vacuum by the old suck on it and see if it holds method...that's what she said? Thanks for the help! |
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| 914 RZ-1 |
Oct 3 2018, 08:44 PM
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#2
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Porsche Padawan Group: Members Posts: 683 Joined: 17-December 14 From: Santa Clarita, CA Member No.: 18,230 Region Association: Southern California |
Get one of those mirrors on a stick and see if you can look underneath the gas tank. Maybe it's underneath there.
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| iankarr |
Oct 3 2018, 08:46 PM
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#3
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The wrencher formerly known as Cuddy_K Group: Members Posts: 2,474 Joined: 22-May 15 From: Heber City, UT Member No.: 18,749 Region Association: Intermountain Region
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We’re all still learning!
Have you looked in the stock location near where the lines enter the engine compartment under the battery tray area? Maybe it was never moved? If your pump is up front, the filter should be too. Good luck and keep asking questions...the knowledge of this community and their willingness to share it is amazing. |
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| bdstone914 |
Oct 3 2018, 09:52 PM
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#4
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bdstone914 Group: Members Posts: 4,523 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
Maybe they did not put one back in when they moved the pump. just add one prior to the pump.
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| falcor75 |
Oct 3 2018, 10:22 PM
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#5
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Senior Member Group: Members Posts: 1,579 Joined: 22-November 12 From: Sweden Member No.: 15,176 Region Association: Scandinavia
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Isnt the stock filter between the pump and the engine?
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| Tom_T |
Oct 3 2018, 11:26 PM
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#6
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TMI.... Group: Members Posts: 8,318 Joined: 19-March 09 From: Orange, CA Member No.: 10,181 Region Association: Southern California
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The factory FP relocation FSB has it as it was supposed to be by the tank & FP just inside the circular port to the tunnel (pic 1) - to the right of the FP (pic 2), & you should be able to pull out the hoses to change it in the open.
  . Use the OE square filters if you can find them. Cheers! (IMG:style_emoticons/default/beerchug.gif) Tom /////// |
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| JeffBowlsby |
Oct 4 2018, 12:45 AM
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#7
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914 Wiring Harnesses Group: Members Posts: 8,510 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None
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Tom, can you send me a copy of this FSB for the FP relocation? I have never seen it.
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| 914Sixer |
Oct 4 2018, 05:47 AM
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#8
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914 Guru Group: Members Posts: 8,886 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region
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I'm with Jeff, never seen FSB on fuel pump relocation. I would like to see it too.
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| tvdinnerbythepool |
Oct 4 2018, 03:14 PM
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#9
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Member Group: Members Posts: 310 Joined: 24-July 18 From: Olympia, WA Member No.: 22,336 Region Association: Pacific Northwest
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Thanks to all, looks like they replaced the hoses and forgot to install a filter!
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| falcor75 |
Oct 4 2018, 10:18 PM
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#10
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Senior Member Group: Members Posts: 1,579 Joined: 22-November 12 From: Sweden Member No.: 15,176 Region Association: Scandinavia
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Most of our cars have been down at the price bottom where nobody cared to spend a dollar more than necessary on them so finding stuff like this isnt that uncommon.
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| Chip |
Oct 5 2018, 12:34 AM
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#11
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Member Group: Members Posts: 125 Joined: 1-April 17 From: Brigham City, UT Member No.: 20,986 Region Association: Intermountain Region |
QUOTE(falcor75 @ Oct 3 2018, 10:22 PM)  Isnt the stock filter between the pump and the engine? The fuel filter should be between the fuel tank and the fuel pump. It can be round or square, usually plastic. |
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| tvdinnerbythepool |
Oct 5 2018, 02:56 PM
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#12
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Member Group: Members Posts: 310 Joined: 24-July 18 From: Olympia, WA Member No.: 22,336 Region Association: Pacific Northwest
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Ok, I finally found the dang thing.
It's under the car at the rear just before the line goes through the sheet metal into the engine bay. I know that ideally the filter should be before the fuel pump, but has anybody had any adverse effects of having the filter farther down the line? |
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| SirAndy |
Oct 5 2018, 06:18 PM
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#13
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Resident German Group: Admin Posts: 41,651 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(tvdinnerbythepool @ Oct 5 2018, 01:56 PM) but has anybody had any adverse effects of having the filter farther down the line? I'm pretty sure those filters were *not* designed for the pressure created by the FI pump. I'm assuming you still have the D-Jet injection? I'd be very concerned about that filter turning into a fuel spraying nozzle, especially since it sits right next to the hot exhaust. (IMG:http://www.914world.com/bbs2/style_emoticons/default/blowup.gif) PS: The rear lower firewall is the correct stock location for a '70 1.7L, your fuel pump used to be right next to it before someone relocated it. |
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| JeffBowlsby |
Oct 6 2018, 09:52 AM
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#14
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914 Wiring Harnesses Group: Members Posts: 8,510 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None
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Sounds like they left the filter in its stock location and just moved the FP upstream. That would mean your 48 year old plastic fuel supply line through the tunnel is also pressurized in addition to the filter and the filter is not protecting the FP, only the injectors.
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| porschetub |
Oct 6 2018, 02:22 PM
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#15
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Advanced Member Group: Members Posts: 4,701 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
QUOTE(tvdinnerbythepool @ Oct 6 2018, 09:56 AM) Ok, I finally found the dang thing. It's under the car at the rear just before the line goes through the sheet metal into the engine bay. I know that ideally the filter should be before the fuel pump, but has anybody had any adverse effects of having the filter farther down the line? Best to have it between tank and pump,check all jointing hoses also,use FI clamps and clean your suction filter in the tank,you need to read up on fuel line replacement and make a decision to replace from a safety aspect,most on here have done their cars. I try to avoid using plastic filters in the engine space,however the plastic ones are fine in your pump location. Good luck. |
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