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Discussion Starter #1
2016 TV

Anyone have any ideas on how to replace this hose without pulling the fuel tank? Sigh....looks like someone took an exacto knife and sliced it perfectly open. It's literally right next to my fuel pump. I tried to do a progressive zoom out to zoom in so you could get an idea of the area I'm talking about.


Oh and I got a thorn in my rear tire that I have to patch. Do the problems ever end!?



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Arizona

If it helps at all, I have a friend who always says, 'don't sweat the small things.' I find cliches annoying, but I take his point. Some folk say 'shit happens'. More annoying cliches.

I have had a number of bikes that had seat or tank designs that made taking them off even more annoying than cliches. On more than one occassion that has discouraged me from taking off seat/tank and on more than one occassion I regretted not taking them off, and had to anyway.

There are manuals available for your bike on this site, I can't remember where, I think it took me a while to find it (TV), if you dinnay have one do a search. I have yet to take the tank off my TV, I suspect I will either be pleasantly surprised how easy it is, or not.

Make sure all cables, lines and hoses are free and have play when you put the tank back on, if it has to come off.

That thorn may not have even punctured your tyre? If it has, it is an easy fix, go to a car parts store that sells the super duper (not a brand name) glue, and get some of the little rubber bizzos, I have heard of them referred to as 'dog dick' plugs, and you should be sorted. Pull out thorn, glue bizzo, shove it in, leaving a bit sticking out. If you are a cyclist, you may have a floor pump.

I assume that 'looks like someone took an exacto knife' was a figure of speech, and that nothing untoward has happened?

I hope it goes well.

regards
Scott
 

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FIG looks more like a bad luck situation than a bad bike situation. Upside is usually after you fix small odd problems the bike will run for 50k without a hitch. its the way the motorcycle gods work.
 

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Discussion Starter #4
FIG looks more like a bad luck situation than a bad bike situation. Upside is usually after you fix small odd problems the bike will run for 50k without a hitch. its the way the motorcycle gods work.
I like the way you think. I sure hope your right.

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Discussion Starter #5
Arizona



If it helps at all, I have a friend who always says, 'don't sweat the small things.' I find cliches annoying, but I take his point. Some folk say 'shit happens'. More annoying cliches.



I have had a number of bikes that had seat or tank designs that made taking them off even more annoying than cliches. On more than one occassion that has discouraged me from taking off seat/tank and on more than one occassion I regretted not taking them off, and had to anyway.



There are manuals available for your bike on this site, I can't remember where, I think it took me a while to find it (TV), if you dinnay have one do a search. I have yet to take the tank off my TV, I suspect I will either be pleasantly surprised how easy it is, or not.



Make sure all cables, lines and hoses are free and have play when you put the tank back on, if it has to come off.



That thorn may not have even punctured your tyre? If it has, it is an easy fix, go to a car parts store that sells the super duper (not a brand name) glue, and get some of the little rubber bizzos, I have heard of them referred to as 'dog dick' plugs, and you should be sorted. Pull out thorn, glue bizzo, shove it in, leaving a bit sticking out. If you are a cyclist, you may have a floor pump.



I assume that 'looks like someone took an exacto knife' was a figure of speech, and that nothing untoward has happened?



I hope it goes well.



regards

Scott
Thanks buddy, yeah it punctured the tire...its the only thing I can see that would do it. I will definitely do what you mentioned.

And I'm trying to keep a level head but it's just literally problem after problem after problem with this thing...

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Discussion Starter #6
Well I took the tank off. I had to. Sigh...

Tell me someone didn't knife these lines!? I mean they are perfectly split. The sad thing is they don't even look like fuel line made for ethanol blended fuel. I am going to replace all the fuel lines with High quality fuel lines. I know they are just vapor but come on!!

They don't even look like the right size. The y fitting is massive and the outer diameter of the hose is the same as the outer diameter of the fitting! No clamps or anything either. That all will change.

A glimpse into the mystery box of WHY is that the previous owner deleted the carbon canister so he might have screwed things up when he was messing with the vapor system.

Not only one line was "sliced" but 2 of them failed the same way at the same time??



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Discussion Starter #7 (Edited)
Not the correct size but this is what I'm talking about. This hose is actually rated for use in the vapor system.

Anyone who is about to do a valve service replace these lines while your in their! They are so rubbery and pliable its laughable. New lines are reinforced and made for fuel.

And for people that like photos I took a bunch so you can discover what fun I am having! Haha

The last picture I posted is where the two vent hoses come out of the tank then they come into the Y and go into the lower split hose. I am ASSUMING that the lower hose goes to the use to be carbon canister....but if I don't have one where should it be connected? Pre throttle body or post? I didn't have any idling issues so my assumption is pre throttle body/airbox area. Since the latter would mean I would have a vaccumm leak. I guess I'll have to do more digging.


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Well I took the tank off. I had to. Sigh...Tell me someone didn't knife these lines!? I mean they are perfectly split. The sad thing is they don't even look like fuel line made for ethanol blended fuel. I am going to replace all the fuel lines with High quality fuel lines. I know they are just vapor but come on!! They don't even look like the right size. The y fitting is massive and the outer diameter of the hose is the same as the outer diameter of the fitting! No clamps or anything either. That all will change. A glimpse into the mystery box of WHY is that the previous owner deleted the carbon canister so he might have screwed things up when he was messing with the vapor system. Not only one line was "sliced" but 2 of them failed the same way at the same time??


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Those lines have the look of a hose that has been forced onto something? Your startegy of fixing all the things that look like they may need it is most wise. If there is room, and a bike does not have a fuel filter on the line, I ususally bung one on while I am at it.


I may have misunderstood what you were saying, you do not run your bike on an ethanol fuel do you?
 

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Here we go....

The only way to effect that repair, as you have discerned, is to remove the tank.

The way you have suspended your tank puts your fuel pump connector at risk of failure as they do become brittle. You should disconnect that quick release fitting and properly service the fuel pump plate.

If the previous owner did remove the charcoal canister, you will know because it won't be hanging off the right side near the radiator. The hoses circled in red must be plugged, or removed and the throttle bodies plugged at the read circles. After that operation, the bike should be remapped to compensate for the lost air flow into the throttle bodies from that path.

The green circled hoses would have been "wyed" together to a single drain line. That is where your splits occured. Those split were not "cut". It is simply heat and age related failure...nothing to do with ethanol. A simply single walled nitrile tubing of 5/16 inches is sufficient for this application. Using Fuel Injection hose that is not rated for engine heat exposure will cause additional failure and is an unnecessary expense.

Working on a bike while frustrated is the quickest way for something else to go wrong.

As for the advice to "bung in" another fuel filter...well, that is patently absurd. There is a high quality rated filter inside your tank along with an intake suction screen for additional protection. Adding an additional filter takes up space that isn't really available, adds at least two more failure prone connections and adds a component that is redundant. Why would you do that to yourself?!

Since you have the tank off, and the previous owner shows signs of a lack of Mechanical Sympathy, do yourself a favor and pull the fuel pump plate and see what is going on in there. You may save yourself a headache....and another Weekly Problem post... down the line.

1.jpg


This is where I put my pitch for you to add your bike model and year to your signature line so those of us who are trying to help don't have to go searching for it.

2.jpg
 

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Oh, and while I'm at it, the hose routing is correct. The issue will come when you sit that fuel tank back down and you find you have pulled hose line toward the tank. Be cautious and take your time to ensure nothing pinches and all goes back as intended.
 

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Discussion Starter #12
I may have misunderstood what you were saying, you do not run your bike on an ethanol fuel do you?
No I don't but out where I live they blend 10-15% ethanol into the fuel. I know because i haul the fuel I put into my bike. I've never put more than 15% into my tank. The ethanol content is regulated by region and season. Further north they put a higher concentration and down south they put a lower amount. But anyway those hoses are junk. They are melting away and getting replaced.

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Discussion Starter #13
The hoses circled in red must be plugged, or removed and the throttle bodies plugged at the read circles.



The green circled hoses would have been "wyed" together to a single drain line.



View attachment 470939





View attachment 470941
Can I not connect the green circled vapor lines together and run them up to the red circled lines next to the throttle body?


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Discussion Starter #14
There is literally fuel steady dripping out of my vapor line....after I got it back together. So that why I'm thinking of just connecting the lines together then the engine will suck up the fuel instead of it coming out and onto the ground on my garage floor.

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Discussion Starter #15
The only downside I can think of is if my fuel keeps dripping out of that line it could run into the engine and potentially hydrolock the motor.

But why is dripping so much from the vapor lines????

The tank isn't overfilled.

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Discussion Starter #16
When engine is running both lines neither pull vacuum or are pressurized.....


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Normally when you get fuel dripping from the external vent hose one of the internal vent hoses in the tank is split or damaged
which causes the fuel to syphon from the tank and drip out the external vent hose.
 

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Discussion Starter #18
Normally when you get fuel dripping from the external vent hose one of the internal vent hoses in the tank is split or damaged
which causes the fuel to syphon from the tank and drip out the external vent hose.
Yeah that would make sense...sigh...

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Fuel dripping from either hose...cap area drain or evap system vent.... is from a leaking internal hose. I believe your bike has the hoses molded into the tank. Ther have been other reports of this failure...

This is a serious safety hazard (think house on fire!!!). This is also part of the bike covered by the Federal Emissions Warranty (5 years or 30,000 kM)....

Contact MV Agusta directly and tell them about this. You need a new fuel tank and the should be thrilled to get one to you before your lawyers reach out to them over the cause of your house burning down.
 

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Can I not connect the green circled vapor lines together and run them up to the red circled lines next to the throttle body?


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No you should not do that. One line is a vapor line and can go th the Throttle Bodies...the other is a liquid drain that will allow water and spilled fuel to enter your intake. That is a bad idea.
 
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