Parts missing missing on my 97 Valk

[herc770]

I was doing some work on my carbs to eliminate a fuel leak.
As I was removing the carb set and cross referencing parts I noticed that my bike doesn't have the air control valve that helps reduce the popping/back firing that happens when letting off the throttle.

My bike, which I've had only one year looks very stock under the air cleaner.
I watched a video on carb work being done on a 98, it also had this air control valve.

Can someone with a 97 confirm for me whether or not they have one?
I am not a fan of the popping. But I don't really want to mess with it if it came that way stock

[Thunderbolt]

If I am interpreting your question correctly, you are getting decel or intermittent popping.  Several things can cause this, mostly all vacuum related.  Change the small hoses on the side of each carb, they are about 2 inches long.  Tighten the band clamps on each intake.  Change the intake o-rings, and check the vacuum hoses on #3,#4, and #6 intakes.

[9Ball]

If you're missing the PAIR valve, then someone desmogged the bike before you bought it.  That is not the stock configuration for a USA bike.

The PAIR is more for meeting exhaust emissions standards than anything else.  If you have popping, then check the vacuum plugs on the intakes (if the bike was desmogged you should now have 5 of these plugs and one vacuum line for the petcock from #6 carb).

Check the tightness of the intake runner boots....there are hose clamps on both the top and bottom of each intake.  Also, check that the intake o-rings are in good shape....if you see brown staining on top of the engine where the intake meets the cylinder head then that is a visual clue that these need replacing....if not, just snug each intake down to the proper torque setting.

Good luck...post your progress.

[Bigwolf]

   Plus 1 what JR said. 

If the desmog was properly done, that source for decel popping has been eliminated.  Do be sure to check everything already mentioned plus be sure to test each air cut-off valve while you have those carbs out of the bike.  When I rebuilt the carbs on my '98 standard at 25k miles, 5 out of the 6 air cut-off valves were leaking vacuum.

Bigwolf

[herc770]

If you're missing the PAIR valve, then someone desmogged the bike before you bought it.  That is not the stock configuration for a USA bike.

The PAIR is more for meeting exhaust emissions standards than anything else.  If you have popping, then check the vacuum plugs on the intakes (if the bike was desmogged you should now have 5 of these plugs and one vacuum line for the petcock from #6 carb).

Check the tightness of the intake runner boots....there are hose clamps on both the top and bottom of each intake.  Also, check that the intake o-rings are in good shape....if you see brown staining on top of the engine where the intake meets the cylinder head then that is a visual clue that these need replacing....if not, just snug each intake down to the proper torque setting.

Good luck...post your progress.

I have it all back together now and was hoping that I had eliminated the popping.
Replacing the O-rings on the intakes is one of the items I also did.
Just to clarify the vacuum hose configuration on the bases of the intake tubes:
On the right side, all three are teed together.
On the left they are also teed together but from the tee a vacuum line runs to the petcock valve.

I may be reading your post incorrectly, but it sounds like the vacuum line should run directly from #6 only??

[Ricky-D]

I may be reading your post incorrectly, but it sounds like the vacuum line should run directly from #6 only??

Not necessarily!

What you see is probably an attempt to get better results from the stock petcock.

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[Patrick]

Those intakes should not be T-d together.. First we need to know whether this monster has or has not been de-smogged..
Right side[ brake levers] cylinders are from from to rear,, 1,3,5 .. 1 and 5 should be capped.. 3 is coupled to 4 if not de-smogged.. If de-smogged then 3 is also capped..
On left side.. 2 is capped.. 4 is coupled to 3 if not de-smogged,, capped if de-smogged.. 6 goes to petcock or is capped if a non-vacuum petcock is used..

[herc770]

Mine must be done incorrectly or something.
1, 3, & 5 are teed together on right 2, 4, & 6 teed together then hose branches off that to what i am guessing is a vacuum petcock (fuel hose, air vent hose, & vacuum hose.

[9Ball]

not necessary....that was someone's idea of a creative way to block off the intakes.

In a stock setup, intakes 1, 2, and 5 have vacuum caps.  Intakes 3 and 4 go to the PAIR valve.  Intake 6 goes to the petcock vacuum port.

My recommendation is to go on ebay, buy 5 redeyetech vacuum caps (they come 3 to a set) and one new piece of vacuum hose (he sells this too) for the petcock and get rid of the "octopus" the previous owner created.  Every connection is a potential vacuum leak and is really a wierd solution in my book.

http://www.ebay.com/itm/Vacuum-Cap-Kit-4mm-Viton-B-Honda-Valkyrie-GL1500C-GL1500CT-GL1500CF-GL1500CD-/330829430199?pt=Motorcycles_Parts_Accessories&hash=item4d06f87db7

http://www.ebay.com/itm/OEM-Petcock-Vacuum-Line-for-Honda-Valkyrie-GL1500C-GL1500CT-GL1500CF-GL1500CD-/230882258949?pt=Motorcycles_Parts_Accessories&hash=item35c1a7b005

Good luck, you're almost there.

[Chrisj CMA]

Mine must be done incorrectly or something.
1, 3, & 5 are teed together on right 2, 4, & 6 teed together then hose branches off that to what i am guessing is a vacuum petcock (fuel hose, air vent hose, & vacuum hose.

you are correct, that is incorrect.

http://www.hdlparts.com/fiche_section_detail.asp?section=2552174&category=Motorcycles&make=Honda&year=1997&fveh=132664

On this fishe #21 and 24 go the the two center carbs (one on each side) and then there is a vacuum line to the petcock from the rear carb on the left side (#6) thats it, the rest of the nipples are capped off

[9Ball]

vous ja De....

[herc770]

Thank for all the help!
Caps and vacuum hose now ordered!
Guess I will read up on de-smogging and see if I've missed anything else.
Once I straighten this out I'm hoping for a little better gas mileage also.

So far I've only been getting 25-27 mpg

[9Ball]

desmog won't really help much in the mpg area, if at all.  You'll just eliminate the sources of vacuum leaks and clean up excess tubing.

[herc770]

Ah ha!!!
After reading the De-smog link in Shop Talk my bike hasn't be completely de-smogged.

Still has all the chrome air feeds pipes, and both reed valves cases.
Looks like the only thing that had been done was remove the PAIR valve and splice the two hoses together that drop down to the reed valves.
Then they re-routed the vacuum lines like I described above.

What a pain now that I have it all back together.
There was no mention of any adjustments that needed to be made after the de-smog, like valve or carb adjustments, etc.
Is that true?

Guess I will be pulling it back apart again sometime soon...

[sandy]

In '03 I went to the Long Beach motorcycle show. As I got off the Valk in the parking lot I was approached by a man. I think his last name was Lyon. He had run a Valk at Bonneville. He told me to tie all (6) the vacuum lines together for smoother carbs. It reduced the pulse vacuum in each runner tube. I've never tried it but apparently someone has.

[vic]

I'm assuming "Nor Cal" below your screen name refers to Northern California (where I'm originally from) and if you have a California bike, the vacuum routing to the petcock is a bit different than the rest of the 49 states.   I have a "98 Tourer that I bought new in California.  I've kept everything stock.   The vacuum hose to my petcock runs from the #6 intake runner to a tee midway above the motor.  The tee then has 2 vacuum hoses running out.....one to an air valve and one running up to the petcock.   If you don't have a California bike, disregard.

[herc770]

I'm assuming "Nor Cal" below your screen name refers to Northern California (where I'm originally from) and if you have a California bike, the vacuum routing to the petcock is a bit different than the rest of the 49 states.   I have a "98 Tourer that I bought new in California.  I've kept everything stock.   The vacuum hose to my petcock runs from the #6 intake runner to a tee midway above the motor.  The tee then has 2 vacuum hoses running out.....one to an air valve and one running up to the petcock.   If you don't have a California bike, disregard.

Yes I'm in Northern Cailifornia.
I'm the third owner, and the previous owner was local also. I also have a strong feeling the original owner was close by also.
The one side you are describing sounds so similar to what I saw.
Does the right side look similar to what I've described? Non are capped.

[vic]

My setup on my stock California bike is just like J. Horton described earlier in this thread.   On the right side, # 1 & #5 is capped.   On the left side, #2 is capped and #6 does not run straight to the petcock...it runs to a tee that you really can't see unless the airbox is off.  That tee sits right above the middle of the motor.  Then from the tee, one vacuum hose goes to an air valve and the other hose runs up to the petcock.   I have a shop manual that shows how the stock vacuum lines should be routed.  If you have the manual it would be a great help.  If you don't have it, I believe you can download it from Dag's site in Norway.  Somebody here will have that link.

[vic]

Another thing I forgot to add about our California bikes being different from those in the 49 states.   The 49 States Valks have the vent hose from the fuel tank running down to a tee midway to the ground.  From that tee, the hose continues on and vents to the open air.   On the California bikes, we don't have a tee on that vent hose running from the fuel tank.....it's just a straight shot down to that cannister (looks like a coffee can) on the bottom of your Valk.  Do you have that cannister or was that removed?

[PhredValk]

does the bike have cruise control? With the Audiovox cruise setup the vacuum nipples are tee'd together like that to the vacuum canister .
Fred.

[Ricky-D]

There was a thread that DAG started some time ago where he was going to try and gallery all the vacuum barbs together in a common togetherness and see what the result might be.

Sounds interesting, not sure of what the outcome would be nor how it would affect the performance or fuel mileage.

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