4 hoses in the fuel pump area...

raceghost · #1 (**permalink**) 11-08-2007, 03:37 AM

Ok, on the bottom side of the gas tank, towards the back, one would find the primarey (large) gas line feed to the throttle boddies. THen one would find the return from the throttle bodies. And finally, that leaves two vacum hoses connections or overflow connections. What does one do with those, when they have done the the flapper, pair, box mod?

heavyzee · #2 (**permalink**) 11-08-2007, 03:49 AM

one is the overflow for your fuel tank... u need that one, so gas doesnt spill out on your motor....

the other one is so the tank can breeth, you want to make sure that one doesnt get pinched between somthing, or you will vapor lock your gas tank

raceghost · #3 (**permalink**) 11-08-2007, 06:59 AM

What if neither hose is there? I new one was the breather, and one was the over flow. I didn't plan on overflowing (famous last remarks). With the big box, pair mod, flapper mod, and removing the evap, those hoses aren't there anymore. What would one suggest doing with said down spouts from tank?

RVTMAVERICK · #4 (**permalink**) 11-08-2007, 12:16 PM

DAMN R/G!

Put them Back! You don't have them... then get them.. That's it man..

Please.. DON"T go making Mountains out of ant piles

Wholey Crap man, how long has this been going on man.. 1 wk., 2 wks., I'm sorry But... I feel bad for you.. truly I do but Come on bro.. What R U Going to do!?

Rigor · #5 (**permalink**) 11-08-2007, 01:19 PM

Quote:

Originally Posted by raceghost

What if neither hose is there?

Vent line isn't that critical that it needs to be on the tank, however, the OVERFLOW line is. If the overflow line isn't on, and your bike happens to spit fuel out that vent, due to a full tank, heat expansion, sloshing around, etc.....it's going all over the hot rear cylinder/pipe of the engine.

If you thought the bike felt hot between your legs in the summer NOW......wait until that happens.

I'd still attach the vent line though. Considering that it allows the tank to "breath" and not implode with the suction of the fuel pump, it may also vent gas vapors on or around the engine, and you want that directed to another area, like below the bike.

raceghost · #6 (**permalink**) 11-08-2007, 03:49 PM

I work 2 miles from home, and the thing has not had a full tank since I have done this mod, since I have had to keep lifting the tank to be in the box. That is why I am asking now. And it has been going on for 3.5 weeks now, I am ending the 4th week, with a bike that still won't idle. And I posted in the other thread, not making mt. out of mole hills. I know it is something simple, just running out of simple. I appreciate all your feedback and help. I will put those back on. where would one aim the vent tube to, since it went to a canister, that is no longer there?

Rigor · #7 (**permalink**) 11-08-2007, 03:56 PM

Quote:

Originally Posted by raceghost

I work 2 miles from home,.......with a bike that still won't idle.

OK....well, I wasn't aware of the other thread...(Mountains out of Mole hills comment..

) but if you're asking if the 2 lines/hoses have anything to do with why your bike won't idle, the answer is no.

Check and make sure you plugged the open vacuum port on the front throttle body, after removing the vacuum reservoir canister line.

Make sure you plugged your Baro sensor, (on top the airbox) back in.

Run the overflow line to the bottom of the bike. Having fuel drip on the ground in front of your rear tire isn't a great idea, but it's better then having it spill onto a hot engine. You can hook it up to a small catch-can if you want.

Lastly, are you sure that all this "2 mile" to work and back driving isn't fouling your plugs?

Hope some off this helps.....

Just Riding Along · #8 (**permalink**) 11-08-2007, 03:57 PM

I think a couple folks here have imploded their tanks, it happens faster than you can kill the motor, get the key out, and open the tank.

raceghost · #9 (**permalink**) 11-08-2007, 04:23 PM

Ok, quick run down.

I am free of debree or blockage on the tank. The two ports in question are the breather, and the over flow. Rigor, I thought the same, they won't affect the idle. Will a two mile run fowl plugs if I am slow, or fast, and I will ride the opposite? Only vehicle, since the electrical issue on my 88 jeep has it dead the same day I put the big box on. Chasing that little problem for 6 months now. LOL.

I capped the flapper vacum port on the front bottom right of the TB's. However, I don't remember doing anything with the Charcoal Canister port on the left side, behind or next to the front TB that is pictured in the thread about T1/Thorsten/Mori Airbox Idle Q's. I have 3 updated posts in that thread about idle issue. You guys deffinitly answered my Q's on what to do with the overflow, and I will fix. The vent tube, I will try and route back underneath. Curiosity asks, on the bikes that don't have the Charcoal to begin with, where does the vent tube go on those bikes? Could one route back into the airbox?

RVTMAVERICK · #10 (**permalink**) 11-08-2007, 06:21 PM

R/G,... Did you ever look at your spark plugs from when I told you to check them like 2 wks ago?

Yes,... When you do short rides... this is when "IMO" you have the biggest chance of fouled plugs!.. The engine doesn't really get up to normal operatiing temps. and or engine speeds, especially ONLY 2 miles!

R/G,do you not have like 4 hoses coming out the bottom of your fairing left side, of which 2 of them should be capped off...? This is where your vent and engine oil mist and overflow, Can't remember what else...
Anyhow, that is where the lines run.
I ended up getting rid of 1 of the with the AfterMarket AirBox

I'll have to look up what the stuff is when I get home...That is if you haven't recieve your answers by then......?

Also,... Sorry about this morning bro., I had a BAD one...

Peace Jeff

Rigor · #11 (**permalink**) 11-08-2007, 07:02 PM

Might want to look at the possibility of a bad fuel pressure regulator, as well. It's on the fuel rail, at the rear throttle body.

If it's bad, it'll have fuel in the vacuum hose, or if vacuum is applied, it won't hold it. Symptoms are a rich running engine and plug fouling, no matter what.

But.....(Everyone I know has a big "But".)

If all you're doing is 2 mile rides, I gotta agree with Jeff on the cause there........that's why I asked about that, in my prior post.

Take it out and flog it. The RC51 is not a putt-putt bike, nor fairs well in slow speed/rpm tooling around town.

raceghost · #12 (**permalink**) 11-08-2007, 08:17 PM

Maverick, no offense taken earlier. Its all good.

Just running out of simple options like I said.

The 2 mile run betwen my house and work average speed is 60 MPH. The speed limit on the road is 55, and yes, through town. You are correct, the bike is approx 150 when I am shutting it off in the garage and/or work.

I got rid of most running down the left side, I was following the write ups, and none of them showed pics of the aftermath with those tubes, so naturally, I thought everyone left them off.

Spark plugs double check. I am writing 2-3 posts per your guys one, so I think your missing some of the things I am doing, and only catching repeat attempts on the same question. I will slow down for sure on my posts. LOL, sorry about that.

Quote:

Rich, WAY to rich. The spark plugs look wet, and fouled, not oil fouled though, just like here: Your spark plugs are trying to tell you something.

RVTMAVERICK · #13 (**permalink**) 11-14-2007, 01:09 PM

[quote=raceghost;432567]

I got rid of most running down the left side, I was following the write ups, and none of them showed pics of the aftermath with those tubes, so naturally, I thought everyone left them off.

quote]

Hey R/G,

What's happening with your RC? Has the dude got it running yet?

FWIW and FYI... I've got 3 of the 4 hoses still running down and set-up as Honda OEM had them.
These ARE the 4 hoses here,
1) Fuel Tank Overflow Hose,
2) Fuel Tank Breather Hose,
3) CrankCase Breather Storage Tank Hose,
4) Air Cleaner Housing Drain Hose

So as you can see and figure out, the OEM AirBox is Gone and so is that hose... BUT I am Still using the OEM Breather Storage Tank, and as that is being used, so is that Hose

and of course Both of the Fuel Tank\AirBox Cover Hoses too...

I Hope this Helps you,

Peace Jeff

RVTMAVERICK · #14 (**permalink**) 11-15-2007, 12:41 PM

Yeah Plus 1 with "thatkindasux"

So, what's the deal R/G....

Why have you not responded to this and other(s) But then you go start another thread.. Which by the way, I have NO clue what you are saying and or asking in that thread!...

Does anyone else understand what R/G is saying in the "Dude....fuel mileage" or whatever it said in that thread?

Does that mean, the guy/ friend of yours got your RC51 idleing now?

vtstrm0709 · #15 (**permalink**) 10-15-2009, 08:56 PM

Sorry to drag up such an old thread, but when I did my search for those four hoses, this is the only thread that came up.

Jeff, do you (or anyone else reading this) know if having fluid in either of the two capped hoses (3 & 4 below) typically indicates a problem? I drained about 4 inches of fluid (likely engine oil) from one (not sure if it was 3 or 4) while getting her track ready. It had stained the hose so I'm guessing its been there for a quite awhile, maybe before I even owned the bike.

Thanks in advance,

-Thomas

Quote:

Originally Posted by RVTMAVERICK

FWIW and FYI... I've got 3 of the 4 hoses still running down and set-up as Honda OEM had them.
These ARE the 4 hoses here,
1) Fuel Tank Overflow Hose,
2) Fuel Tank Breather Hose,
3) CrankCase Breather Storage Tank Hose,
4) Air Cleaner Housing Drain Hose

So as you can see and figure out, the OEM AirBox is Gone and so is that hose... BUT I am Still using the OEM Breather Storage Tank, and as that is being used, so is that Hose

and of course Both of the Fuel Tank\AirBox Cover Hoses too...

I Hope this Helps you,

Peace Jeff

wibbly · #16 (**permalink**) 10-16-2009, 03:29 AM

rip 'em off... i haven't had mine on for years...

don't fill the tank super full, it's not rocket science...

has anyone actually documented a bike burning to the ground from a few drops of gas onto a warm engine? i call bs

UCRC51 · #17 (**permalink**) 10-27-2009, 05:24 AM

i got the POS gas leak from the welds on the sp1 and ive started my bike with gas on my header and as it warms up it just burns off in a white smoke.... i think its partial BS, but its better to be safe... then sorry, or bbq.

RVTMAVERICK · #18 (**permalink**) 10-28-2009, 02:10 AM

Quote:

Originally Posted by UCRC51

i got the POS gas leak from the welds on the sp1 and ive started my bike with gas on my header and as it warms up it just burns off in a white smoke.... i think its partial BS, but its better to be safe... then sorry, or bbq.

Definitely NOT BS guys LOL

Have you 2 forgotten...

You have a "Spark Plug and SP wire\Coils" right under your fuel Cell..

Hell------o........> Kaa BOOM!

Different strokes for different folks... FWIW.. I'm down to only 2... Fuel cell vent and I don't even remember what the other one is right now... LOL I know it's NOT the Crank case breather one, as that goes right into my AirBox now... OH Yeah, it's the fuel cell over flow,.. that what the other one is..

Thomas,... I'm guessing you've figured it out by now,.. sorry I've missed this... but what you've described is perfectly normal... Maybe alittle much but that's it... Be better if you drained at every oil change OR every other oil change... See what flows your boat... ej

Peace Jeff