Questions from inside my OB fuel tank
03-03-2020, 04:27 PM
#1
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Questions from inside my OB fuel tank
Hi folks, this is my French early 79 with an uncertain story. I am fitting a newly reconditioned WUR, I needed to adjust the gas tank position and also the gauge only ever reads 3/4 full, and so I decided to pull the whole thing and clean it.
This is the view thru the sender hole. My questions:
1. I guess the plastic lid sitting next to the sender receiver cup should be sitting on top, not to one side..I guess its important for something. I need someone with thin arms..
2. Can anyone see any reason for me to change the in-tank screen/filter? It looks good to me and apparently they are easy to strip the threads, so best leave alone?
3. Gunk report looks as expected - lots in the receptacle, I guess they designed that? (And, how do coffee grounds get into the fuel tank? Is it because its French?)
4. The sender is out and I have the tiny nut off of the base. There is a second nut. See pic. Does this come off also, so I can get the base off, so I can inspect the float and guide wires? It looks fragile and I can hear the float sliding pretty freely up and down inside, so I should maybe leave it be.
Thanks as always :-)
This is the view thru the sender hole. My questions:
1. I guess the plastic lid sitting next to the sender receiver cup should be sitting on top, not to one side..I guess its important for something. I need someone with thin arms..
2. Can anyone see any reason for me to change the in-tank screen/filter? It looks good to me and apparently they are easy to strip the threads, so best leave alone?
3. Gunk report looks as expected - lots in the receptacle, I guess they designed that? (And, how do coffee grounds get into the fuel tank? Is it because its French?)
4. The sender is out and I have the tiny nut off of the base. There is a second nut. See pic. Does this come off also, so I can get the base off, so I can inspect the float and guide wires? It looks fragile and I can hear the float sliding pretty freely up and down inside, so I should maybe leave it be.
Thanks as always :-)
03-04-2020, 10:54 AM
#2
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The lid needs to be on top of the bowl - correct.
The strainer looks new to me so leave well alone.
Flush it out as best you can.
The strainer looks new to me so leave well alone.
Flush it out as best you can.
__________________
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
03-05-2020, 02:11 AM
#4
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See this on the gauge. https://members.rennlist.com/sharksk...ugeGremlin.htm
Mine was not working originally. The float has 2 contacts that slide on the wires shaped like > , with the wire on the point. They can get disarranged so the wire is behind the >, and then you get no reading. The wires also get covered in dried fuel, and need cleaning - CAREFULLY - they are fragile! With the float at the bottom you should see ~ 80 ohms . There is also a contact at the bottom to make the low fuel light come on.
Agree with leaving the strainer alone - looks clean. Mine was covered in mud and damaged, and I spun the moulded insert trying to remove it. If you have fuel supply issues I had good results from loading the tank with injector cleaner, and bridging the pump relay, and let it circulate fuel for as long as you can, to flush deposits out of the lines.
jp 83 Euro S AT 57k
Mine was not working originally. The float has 2 contacts that slide on the wires shaped like > , with the wire on the point. They can get disarranged so the wire is behind the >, and then you get no reading. The wires also get covered in dried fuel, and need cleaning - CAREFULLY - they are fragile! With the float at the bottom you should see ~ 80 ohms . There is also a contact at the bottom to make the low fuel light come on.
Agree with leaving the strainer alone - looks clean. Mine was covered in mud and damaged, and I spun the moulded insert trying to remove it. If you have fuel supply issues I had good results from loading the tank with injector cleaner, and bridging the pump relay, and let it circulate fuel for as long as you can, to flush deposits out of the lines.
jp 83 Euro S AT 57k