Article [13] ST1300 - Fuel Pump Replacement

Thanks a bunch!
But how does draining the lower tank from the hose connection #6 on the top of the lower tank drain the gas out of it?
 
The gas gets siphoned out as long as the hose that you put in to your catch-can is kept below the level of the bottom of the lower tank.
 
I just got through doing this. Pull the fuel return hose. (The one with the clip) Attach you siphon hose to this and suck. (I got a cheap siphon from Harbor Freight and it worked great.) The return line goes to the bottom of the tank and you can just about get it sucked dry this way.
 
Mellow said:
When I did mine, I ordered a new gasket and it leaked... I reused the old one with all the indentions from being installed and it didn't, I just cleaned it real good.
Click to expand...
Here's why I replaced my "packing". Note the indentations from the contact and extended compression of the material, likely hardened with agetempImageKpsbVP.png, retained after removing:
 
Good idea using the OEM hoses, however, looks like you may have tightened the one at the fuel pump a little too tight.
Is that bits of rubber coming through the worm clamps?
Many failed fuel pump repairs are due to leaks from these clamps.
The spring clamps HONDA used are safer.
Did you also follow the correct torque sequence and pattern on the nuts?
The cap nuts only fit on certain studs.
And the sequence is different between some years.
 
Igofar said:
Good idea using the OEM hoses, however, looks like you may have tightened the one at the fuel pump a little too tight.
Is that bits of rubber coming through the worm clamps?
Many failed fuel pump repairs are due to leaks from these clamps.
The spring clamps HONDA used are safer.
Did you also follow the correct torque sequence and pattern on the nuts?
The cap nuts only fit on certain studs.
And the sequence is different between some years.
Click to expand...
Thank you for your scrutiny! It will be worth me pulling the assembly and double checking the hose clamps. As for the torque specs, I saw and followed the >'03 pattern for my 'LowerFuelTankTopInstall.jpg06. I torqued in 2 steps; 45"lbs, then 100"lbs. Of note, #4 cap nut would not acknowledge, so I stopped by feel. I have experienced that painful "SNAP" before, and it can REALLY ruin your day.... I guess I will have a look at number 4 cap nut when I open it up again.
 
I trust your feel more than an unknown torque wrench.
I wouldn’t open back up just to check the hose clamps as you can’t do anything at this point.
Wait for failure, then use the spring clamps next time.
Nice job replacing everything.
Don’t break those studs as the lower tank is now obsolete.
 
Igofar said:
I trust your feel more than an unknown torque wrench.
I wouldn’t open back up just to check the hose clamps as you can’t do anything at this point.
Wait for failure, then use the spring clamps next time.
Nice job replacing everything.
Don’t break those studs as the lower tank is now obsolete.
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Larry,
Thank you much for your advice!
/r
Brad
 
Just finished reading this very informative thread. My 2007 ST1300 has 43,000 KMs (or around 27,000 miles) and since I did not get a maintenance history when I took possession, I have done just about every (preventative) steps (flush/fill coolant, new thermostat, new brake pads, serviced calipers, bled brake and clutch fluid, new spark plugs, new air filter, oil filter, changed engine and final drive oils). However, the fuel pump and filter never occurred to me---until I found this thread. I would assume that the fuel filter is due for a change, but I am debating whether I should also change the fuel pump while I am inside that second tank. From what I have read, fuel pumps tend to last around 100,000 miles but considering the age of the bike (18 years), should I go ahead and change it? What do you guys think?
 
Dobby said:
Just finished reading this very informative thread. My 2007 ST1300 has 43,000 KMs (or around 27,000 miles) and since I did not get a maintenance history when I took possession, I have done just about every (preventative) steps (flush/fill coolant, new thermostat, new brake pads, serviced calipers, bled brake and clutch fluid, new spark plugs, new air filter, oil filter, changed engine and final drive oils). However, the fuel pump and filter never occurred to me---until I found this thread. I would assume that the fuel filter is due for a change, but I am debating whether I should also change the fuel pump while I am inside that second tank. From what I have read, fuel pumps tend to last around 100,000 miles but considering the age of the bike (18 years), should I go ahead and change it? What do you guys think?
Click to expand...
I spent right at 50 years restoring old Hondas....and one triumph, one Kaw H1. I'm in the habit of not trusting old stuff, especially if it is crucial to the proper running of the bike. Blew a whole lot of $$$ putting them back into showroom condition. Nasty, expensive, rewarding habit. I bought spares for that bike, and the 2006 1300 I got from my little brother. Old habits are hard to shake so I stocked up on spares that may be needed based on all my previous experiences.
Did a major refurb of our 1991 1100 and was absolutely amazed at the number of parts I replaced with new that did not need replacing. One of the few exceptions was the fuel pump assembly. There was no visible rust on the walls of the fuel tank, I removed the pump assembly to check the filter. It had trapped a bit of rust which was falling from the underside of the top of the tank, not visible looking into the tank from the filler hole. Since I had prepared for the worse, I had a nice used tank, new cap, new level sensor assembly and new pump assembly. Got all that for around $100 from various sources. Guess I was lucky and found spares at the point when the model's desirability is waning and just before it becomes collectable....part prices follow suit.
Looooong story short, to me it's common sense to inspect while you are on a roll. One way or another, you will be surprised with what you find.
So far, our ST1300 has just needed fluid changes, tires and two batteries now. Always inspect what's visible when you do any maintenance. Leaks may be difficult to see, corroded wiring connectors and ground wires may be waiting, look for over heating indications on all the wiring/connectors you can see...same with the hoses of all sorts and their clamps....don't forget to clean and lubricate anything in your path...the shifter linkage comes to mind.
If you have questions or concerns, ask away here. Most responders are familiar with the bikes and DO know what they are doing.
Glad I stumbled onto it while searching online for 'Honda ST1100 Parts'.
 
Very interesting @Oldbikefixr!!. You can be sure I will inspect, clean and lube everything in the most inaccessible places while I have the chance. And, I agree, this place is a treasure trove of knowledge. I have been reading and bookmarking quite a few threads for future referenence.
 
@Dobby , I recently completely your "overhauling" actions (and many more) on my '06 at 70k miles. A few thoughts come to mind:
1. "43km may be premature", however;
2. "While your in there...", however;
3. If you do replace the pump, it wasn't needed but you'll never have to do it again; if you don't, for some reason it will fail ("I wish I had..."), and you'll have to go in again.

I replaced my fuel pump. Here's what I used:

Fuel Pump/Filter $100

https://www.highflowfuel.com/search.php?Year=2006&Make=Honda&Model=ST1300
 
Does anyone have a link to a video on how to access/change fuel pump and filter? Searched Youtube but could not find anything. The Opening Post refers to a document on this but that link does not work for me.
 
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