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Fuel pump problem

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Old 04-05-2018, 06:20 PM
  #16  
John McM
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Originally Posted by Foxman
Can't you just flip the wrench around and slip the box end over the whole bolt?
No, because there is a pipe coming off the banjo fitting.
Old 04-05-2018, 06:23 PM
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No_snivelling
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Originally Posted by Foxman
Can't you just flip the wrench around and slip the box end over the whole bolt?
You might be able to do that once the pump is out of the car, but you cannot use a box end wrench to access that nut with the fuel line connected, unless you want to saw your fuel line in half. I tried a flare nut wrench but its sides are too thick to clear the electrical terminals.
Old 04-05-2018, 08:08 PM
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540964
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Replace the check valve.
Old 04-05-2018, 08:13 PM
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Originally Posted by 540964
Replace the check valve.
Already on order. Actually a new check valve comes included with the new pump.
Old 04-06-2018, 09:08 AM
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cobalt
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Good time to pull the float gage and check to see how it looks. These sometimes can rust and give false readings.

I am assuming you have downloaded a copy of the PET? If not this is a good tool to have. It will also give you a good idea of how things are connected.

​​​​​​https://www.porsche.com/all/media/pd...64_KATALOG.pdf
Old 04-06-2018, 09:18 AM
  #21  
No_snivelling
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Fuel sender was pulled in order to empty tank. You are right, there was rust and some sludge blocking the tiny holes in the bottom. See picture. Yes I downloaded the parts manual. It is worth its weight in gold.
What a great resource.
Old 04-14-2018, 11:05 AM
  #22  
No_snivelling
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Default 964.356.583.01 return line internal cracks

While waiting for the new fuel pump to arrive I started working on the suction and return hoses that connect to the gas tank. They looked good up until I put an inspection camera inside the hose.
Notice the long, parallel striations inside the line? These look like age or stress cracks. Given that the hoses are 26 years old, I will replace them despite the expense.
The hoses bore the following part numbers that have been superceded, but for the record these part numbers do not match the PET numbers for a left hand drive 1992 964.
964.201.581.02 suction hose
964.356.583.01 return line



Inside of return line
Old 04-21-2018, 07:04 PM
  #23  
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After a month of rather depressing dis-assembly and ordering the various bits and pieces, the tide has finally turned. Today I actually got to do some assembly work. What fun!
I got the in-tank fuel filter installed and torqued and also attached and aligned the short rubber fuel hoses to the tank. I was about ready to pop the tank back into place when it dawned on me that it would be much easier to replace the hood shocks while the tank was out. So I gathered my tools and hopped into the trunk, got comfortable and had the shocks changed in no time at all.

It is so rewarding to see the hood go up on its own and not have to tie the hood up to the ceiling or use a piece of wood to support the hood.

While I was in the trunk I noticed rust in the fuel filler neck and started to research that and found that fuel leaks have plagued the 964 and Porsche has 7 versions of the filler neck. Wow. So, I am back to ordering more parts but I am still happy. Progress was made. I know it's not big progress, but progress nonetheless and I got to play the role of trunk monkey. Anyone remember the trunk monkey commercials?



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