Fuel pump/lines/filter
Posted: Fri Apr 19, 2019 9:30 am
Hello ,
This is my 1st post after many hours of reading all of this great info . Thank you to all who give to this forum .
I am the original owner of a '92 907ie (25,000 mi) . I am waking her up after a lengthy slumber and all has gone well ... until today .All of my questions are related to 'inside the tank' . I do have a tendency to 'overthink' things . Sorry .
The inside of the tank looks pretty good ... not much rust or any real visible clues as to the real health of everything in there . In retrospect , my attempt to start the bike without completely going through everything was in poor judgement . After I reinstalled the injectors after a rebuild/service , I turned the key and the pump did ..nothing . I checked for power at the connector under the tank , and all was well . One thing that I did notice was that when the key was turned , I would have power for about 5 seconds and then I would hear a click from what sounded like a relay (?) and then power would cease . This seemed to be consistent with how I remember it acted many years ago . So ...
1. After getting everything apart ... I hooked up the pump (with no lines attached , holding it in my hand) , and the darn thing shot fuel 10 feet across my shop . When I originally tried it , I had a hose on the 'output/supply' that led into a bucket . Why would the pump not operate then , but yet it did function normally after removal ? Even if the pump is/was fine , I get to buy another one because I broke the hose fitting off during removal . oops .
2. After complete dis-assembly I figured that making sure all of the hard lines in the tank were clear would be a good idea ... I noticed a couple of things that seemed odd.
A. the line that goes up to the bottom of the fuel cap is blocked . It will not accept air . Since the other vent line is clear ... my thinking is that as long as I do not overfill the tank I will be ok . Am I correct in this assumption ? The other vent line is fine .
B. I realize that the 'return' port on the bottom of the tank has a one-way valve in it that prevents all of the fuel from draining during tank removal . When I blow through that line into the tank using just my breath , it seems plugged . When I gently use an air hose it will allow air to pass . Does this seem normal ? I see that the fitting is removable . Maybe a good question would be ... what is the return line psi ?
3. I used a good quality fuel injection hose to make up all new lines on the engine . However , I wonder if being 'submerged' in the tank is ok . What type of hose is rated for that ? All of the vent lines are very thin-walled ... almost like a vacuum hose . What is appropriate here ?
4. The strainer that attaches to the bottom of the tank is in poor shape . Can anyone advise where I might get one . In the US preferably .
Thank you for your time .
JD
This is my 1st post after many hours of reading all of this great info . Thank you to all who give to this forum .
I am the original owner of a '92 907ie (25,000 mi) . I am waking her up after a lengthy slumber and all has gone well ... until today .All of my questions are related to 'inside the tank' . I do have a tendency to 'overthink' things . Sorry .
The inside of the tank looks pretty good ... not much rust or any real visible clues as to the real health of everything in there . In retrospect , my attempt to start the bike without completely going through everything was in poor judgement . After I reinstalled the injectors after a rebuild/service , I turned the key and the pump did ..nothing . I checked for power at the connector under the tank , and all was well . One thing that I did notice was that when the key was turned , I would have power for about 5 seconds and then I would hear a click from what sounded like a relay (?) and then power would cease . This seemed to be consistent with how I remember it acted many years ago . So ...
1. After getting everything apart ... I hooked up the pump (with no lines attached , holding it in my hand) , and the darn thing shot fuel 10 feet across my shop . When I originally tried it , I had a hose on the 'output/supply' that led into a bucket . Why would the pump not operate then , but yet it did function normally after removal ? Even if the pump is/was fine , I get to buy another one because I broke the hose fitting off during removal . oops .
2. After complete dis-assembly I figured that making sure all of the hard lines in the tank were clear would be a good idea ... I noticed a couple of things that seemed odd.
A. the line that goes up to the bottom of the fuel cap is blocked . It will not accept air . Since the other vent line is clear ... my thinking is that as long as I do not overfill the tank I will be ok . Am I correct in this assumption ? The other vent line is fine .
B. I realize that the 'return' port on the bottom of the tank has a one-way valve in it that prevents all of the fuel from draining during tank removal . When I blow through that line into the tank using just my breath , it seems plugged . When I gently use an air hose it will allow air to pass . Does this seem normal ? I see that the fitting is removable . Maybe a good question would be ... what is the return line psi ?
3. I used a good quality fuel injection hose to make up all new lines on the engine . However , I wonder if being 'submerged' in the tank is ok . What type of hose is rated for that ? All of the vent lines are very thin-walled ... almost like a vacuum hose . What is appropriate here ?
4. The strainer that attaches to the bottom of the tank is in poor shape . Can anyone advise where I might get one . In the US preferably .
Thank you for your time .
JD