Vacumn Help Needed.!!!!! HELP!!!!

[TearlessTom]

Okay I've had my Early  '97 Valk for about 6 months now and finally stopped riding long enough to do some digging under the hood.

I've already done my usual with a new bike of changing all the fluids, change out the spark plugs, adjusting the valves etc. However I had not pulled the tank off until now.

The bike is very low miles for its age and I am sure it sat a bit. I ran some cleaners and seafoam through several tanks and it purrs like a kitten.

So I pulled the tank to do some routine maintenance ie :

     1.     replacing the vacuum lines
     2.     check the air filter (filter is D-I-R-T-Y!!!!!)
     3.     install my Audiovox Cruise control
     4.     Balance the Carbs.

Which leads me to my 1st problem (Yes I finally got there)

There are no vacuum lines or at least not all of them!

The #3 carb and the #4 carb are sharing a line that "T"'s off to feed a vacuum unit that ties into the manifold.   ( I haven't gotten my repair manual yet so I don't know exactly what this is)

The # 5 carb is running a vacuum to the tank.

The #1,#2, #6 only have a small bit of the rubber hose that leads to NOWHERE! Just to the atmosphere.?

How are these suppose to be routed? Or are they supposed to be capped off?

PROBLEM #2

There are also four larger connections (two on either bank of carbs.)  One on the top rail and the other on the bottom rail. The are pivoting on the rails if that helps.

What are they suppose to be connected to?

Any photos would help also as I am more visual than verbal...lol

Thanks.

I will provide photos tomorrow. My better half is already asleep so I cant get to my camera.

Thanks in Advance

Tom

[DFragn]

The 4 large tubes to the carb rails = Upper 2 are your fuel supplies & the lower 2 are vents that route to a holder on the rear carb stay.

Pretty much sounds like your bike has been DeSmog'd. i.e. Pair Valves removed, all associated vac lines and your chrome head tubes may be missing too. That's a full DeSmog. Some leave the tubes and plug them when they desmog.

Your intake vac caps probably are aftermarket and if you pull one you'll see that there are plugs in them and a brass tip - my best guess there.

[TearlessTom]

I think your are right. On further inspection they were not rotten hoses but caps on the vacuum lines.

Dang these old eyes!   

As for the two fuel opening on the top rails, I will be replacing all the lines.   She is 12 years old now Time for a little TLC

Should these be "T"'d together then the 3rd leg going to the gas tank?  The lines that came off seem to be different sizes.

On the lower rail I am not following. I don't see anywhere for them to go?  Do they connect together then go or do the go to their respective sides.

Are my 3,4, and 6 routed correctly?

Thanks for the quick response. I know I could count on you guys.

Tom

[9Ball]

The 4 large tubes to the carb rails = Upper 2 are your fuel supplies & the lower 2 are vents that route to a holder on the rear carb stay.

Pretty much sounds like your bike has been DeSmog'd. i.e. Pair Valves removed, all associated vac lines and your chrome head tubes may be missing too. That's a full DeSmog. Some leave the tubes and plug them when they desmog.

Your intake vac caps probably are aftermarket and if you pull one you'll see that there are plugs in them and a brass tip - my best guess there.

from his description it sounds like the bike has not been desmogged.  3 and 4 go to the PAIR valve...sounds like it's still there by his manifold comment.

Tom, the bottom lines are drains for the carbs and all six should run to a  6-way connector, then the single larger hose routes to the ground under the bike.  These were rotted and brittle when I cleaned my carbs.  Honda wants a lot of money for these lines.

You can replace the vacuum caps on 1,2 and 5, the PAIR valve lines 3 and 4, and he petcock line 6 from a guy Redeyetech on ebay.  The main gas line is roughly 5/16" (actually 8 mm if memory serves me) that can be bought at any auto supply store.  I chose to use the OEM lines from the "T" to each carb bank only because the OEM lines have the proper bend to them...not really necessary.  Might as well replace the drool tube (clear tygon with the black plug and clamp) and the tank vent line while you're in there.

Good luck.  It will give you peace of mind once it's all done and should last another 10 years.

[N8171S]

If you have the original side covers there should be a vacuum hose diagram sticker on the inside of the left one.  Three carbs should be plugged and usually # 6 vac line goes to the petcock.

[Chillerman]

I have a Honda service manual that I downloaded from someone on this board.  It may have been Dag.  It is 167 MB so it is rather large and I don't know what the easiest way to get it to you would be.  If you did a search on "Honda Valkyrie service manual" I bet you could get one online and not have to wait!   

[TearlessTom]

If you have the original side covers there should be a vacuum hose diagram sticker on the inside of the left one.  Three carbs should be plugged and usually # 6 vac line goes to the petcock.

Nope the side covers have been custom painted so the diagram is gone.

[TearlessTom]

The 4 large tubes to the carb rails = Upper 2 are your fuel supplies & the lower 2 are vents that route to a holder on the rear carb stay.

Is this backwards. The fuel hose that came off is too big for the top rail so I hooked it to the bottom rail and ran some gas through it and it supplies the carbs.

Do the top rails vent back to the air filter housing?

I've got it all back together but it is running rough. Not much power under hard acceleration and sputters a bit. It was also idling a bit higher but I attributed that to the clean air filter.

I seem to have more hoses than holes to put them in. 

the air filter box has three holes/ports, If the two top rails run back to the air filter box, the third fits onto a hose that is positioned behind the ignition.

So where does the clear hose go to?  I am out of places to put it?

Any ideas?  I will have to go back into it to place a vacuum canister in for the Audiovox Cruise control. It is working but the speed varies about 4 miles per hour on hills. I was hoping I could get away with just two lines running vacuum but I guess not. The auto parts only had two one way valves.

Thanks again
Tom

[9Ball]

take a look at the Honda Service manual page 1-30 for a good diagram of all the hoses...Section 5 has all the carb tubing shown as well.

[TearlessTom]

take a look at the Honda Service manual page 1-30 for a good diagram of all the hoses...Section 5 has all the carb tubing shown as well.

And there lies the problem. I don't have a service manual. I have one on order but it hasn't arrived yet.

[mikeb]

can you email me off line ? partytyme@gmail.com ill try to email ya what ya need

[Duey]

SW1 ON Set the Pulses Per Mile for the necessary manual transmission rate of 4000
SW2 OFF Set the Pulses Per Mile for the necessary manual transmission rate of 4000
SW3 OFF Set the Speed Signal for Tach Only
SW4 OFF Medium sensitivity (I have tried LOW, but MEDIUM functions much better)
SW5 OFF Medium sensitivity
SW6 OFF To use the included Control Pad
SW7 ON Select“coil” as the source of timing pulses


I don't loose or gain any speed up or downhill. 

[Mr.BubblesVRCCDS0008]

Tom you may find some of your answers and some photos in shop talk take a look there.

[Dag]

take a look at the Honda Service manual page 1-30 for a good diagram of all the hoses...Section 5 has all the carb tubing shown as well.

And there lies the problem. I don't have a service manual. I have one on order but it hasn't arrived yet.

Service Manual:
http://www.valkyrienorway.com/1520manual/valkyriegl1500.zip