555E Fuel Issue

[cosmaar1]

Make sure when you check the lines and seals to look inside the banjo fitting at the sediment bowl real close. When I got my machine it had a rust problem and a little wad of rust was stuck in the banjo fitting. My machine wouldn't keep running until I found and cleared that.

sorry to be a pain, but I’ve never taken the bowl apart yet. What do you consider the “banjo fitting”? I’ve heard the term used before on here but never knew what it was.

https://www.partspring.com/catalog/product/gallery/id/53533/image/8765/

 

[NH575E]

 

[cosmaar1]

View attachment 236204

looks like I was off a bit

 

[NH575E]

You might also run into needing seals and the plastic screws for the sediment bowl. The screw in the bottom and the bleeder on top are both illustration number 2. My bottom screw broke so I replaced it with a bolt and copper washer. I never loosened the bleeder because I figured it would break also.

 

[cosmaar1]

You might also run into needing seals and the plastic screws for the sediment bowl. The screw in the bottom and the bleeder on top are both illustration number 2. My bottom screw broke so I replaced it with a bolt and copper washer. I never loosened the bleeder because I figured it would break also.

Yes I already purchased everything for the bowl. My plastic screws are still fine and work good. We had to take these off when trying to prime the system last weekend.

 

[cosmaar1]

While waiting for parts, I’ve decided to also replace the fuel lines for the supply and return.

The only thing I can’t see is inside of the fuel tank itself. The service manual doesn’t say squat about what’s inside or what the fuel lines attach to.

Has anyone ever looked inside to see how the fuel is sucked up? Is it rubber hoses? Steel pipes?

 

[thepumpguysc]

Do forget, the oring(#7) MUST GO UP IN the filter head, not on the bowl..

 

[NH575E]

While waiting for parts, I’ve decided to also replace the fuel lines for the supply and return.

The only thing I can’t see is inside of the fuel tank itself. The service manual doesn’t say squat about what’s inside or what the fuel lines attach to.

Has anyone ever looked inside to see how the fuel is sucked up? Is it rubber hoses? Steel pipes?

Small tube is supply, larger tube is return.

 

[Swetz]

NH575E,
That is a great pic. I too was curious as to what was at the bottom of the tank..TY!

 

[NH575E]

FYI This is what the bottom of my tank looked like when I got it and before I soaked it with a 50% vinegar and water solution.

I think it has the same rust condition in the top but I haven't taken time to pull the tank to try and deal with that. That will probably bite me down the road.



My filters were clogged and the main culprit turned out to be one little chunk of rust in the banjo fitting at the sediment bowl. I had the tank cleaned, filters changed, and hoses replaced and still had the engine shutting off problem. When I found this and cleaned it out it came to life and kept running.

 

[Swetz]

A picture is worth a 1000 words!!
Thanks again, more good info!

 

[cosmaar1]

FYI This is what the bottom of my tank looked like when I got it and before I soaked it with a 50% vinegar and water solution.

I think it has the same rust condition in the top but I haven't taken time to pull the tank to try and deal with that. That will probably bite me down the road.

View attachment 236411

My filters were clogged and the main culprit turned out to be one little chunk of rust in the banjo fitting at the sediment bowl. I had the tank cleaned, filters changed, and hoses replaced and still had the engine shutting off problem. When I found this and cleaned it out it came to life and kept running.

View attachment 236415

If I could like that 1,000 times I would. Thank you!!!

 

[stinky64]

I have used the cider vinegar cleanse method as well, on several different types of fuel tanks, it really gets rid of some crap, just need to remember the baking soda flush afterwards to neutralize the acid.........

 

[cosmaar1]

Well I wanted to give an update on my fuel issue now that everything (knock on wood) has been fixed.

NH575E was correct about one thing, boy were those banjo fittings clogged up with a bunch of crud! Honestly I think this was the culprit, but we decided to replace all of the gaskets, washers, and o-rings for the whole bowl assembly. I also put an inline filter in to try and prevent this from happening again. Just for the heck of it because I figured they were original, we replaced the supply and return hoses.






Next up, we replaced some of the “olives” on the hard lines going to the filter housing and then going to the injector pump. We did have an issue with these. Someone suggested purchasing these from eBay: https://www.ebay.com/itm/Set-of-10-...333260?hash=item4b6db82a8c:g:Y~QAAOSwTtZfc3od

While they did end up working, the ones I got from this link were not thick enough. When we put one on each end of the tube, once connected to the fitting, the tube would be loose and would not seal. We tried using a piece of 5/16 hose, but it was slightly too big and the nut wouldn’t slide over it. We ended up using 2 of the eBay ones on each end and were able to put one on top of the other. This worked good.

Lastly, I bought a fuel pump originally thinking that was the issue, but didn’t need to use it. Amazon will be getting this back

Appreciate everyone’s help, pictures, and suggestions. You guys are the best!


Edit: the machine worked great prior to me running it out of fuel. After running it today, we were able to lower the RPMs with the same performance. The throttle response also seemed a lot better as well. My guess is that we had a slight blockage prior and when I ran it out of fuel it made it worse to make it not want to run at all.

 

[Swetz]

cosmaar1,
That is great news!
The pictures are great as well!

 

[rumblecloud]

bookmarked this string.
Thanks.
R