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Ive called 2 honda dealers to tyr to get a new vac adv. for my 83 gl100 and they have no clue what im talking about.Does anyone know if it can be bought seperate of the pulse generator?God I hope so cause Ill bet one could replace it without pulling the swing arm off.What do yall think?

Thanks Kidarheart
 

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Not sure but some one will know?
 

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I have exactly the same problem, also with an '83.

The pulse generator and vacuum advance are one unit and are often available on ebay. I got one at a reasonable price.

I have not yet heard of an alternative to removing the rear wheel and swingarm just to get at this part. So I am just going to live with it until the end of this riding season.

Good luck,

Gilbert
 

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Yes Tony it sure is there looks like #2 and it looks like the vac advance is not sold seperate. What the heck were they thinkin when they did that?

The other thing too is that ther is very little vac at the port at the carb.Barley moves the vac gage.Im sure the port is not blocked cause when i squirt carb cleaner in it the engine speed changes.

Hey maybe i can take off the vac advance diaphram and hook a cable to it and run it up to the handle bars and manualy adv the timing like a model T Ford!

Thanks kidatheart
 

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Could you see the advance change if you applied vacuum to the hose leading to the advance ?

If so, run down to your local Sears store and buy one of their "Miteyvac" hand vacuum pumps, invaluable little tool usefull for checking things like this and bleeding any hydraulic systems, brakes clutches, etc.

http://www.sears.com/sr/javasr/product.do?BV_UseBVCookie=Yes&vertical=TOOL&pid=00947058000

They have a vacuum gauge on them and if you have a manual you should be able to find the advance:vacuum spec.

You might find a bad hose or a plugged port.
 

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In checking online, I found that BikeBandit lists the parts as discontinued

Partfish lists them as available, but before ordering online I'd call to make sure.

They list the "alternator set" at 188.99 (Item #2)

Partfish website is

http://www.powersportspro.com/partsfish/login.asp

Their contact phone number is

Call Our Specialists
1-800-964-1882


 

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Hey Kidatheart, Your apparent lack of vacuum at the carb port was also one of my symptoms.

I hooked up the unit I got from ebay to the port and I was surprised at how little vacuum it needed to operate.

It seems to be vital that there is no air (or vacuum) leak from the diaphragm on the vacuum advance unit.

Gilbert
 

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Kidatheart,

There is not supposed to be vacuum at that port unless the throttle is open. You cannot hold the throttle open for long unless there is a load or the engine will over rev. That makes it hard to test. I test a vaccum diaphram by putting the hose in my mouth and sucking on it. You can create enough vacuum to operate a good advance unit. You can do an easy diaphram leakdown test by sucking on the line and putting your tongue over the end to determine if the diaphram holds vacuum. This sounds primitive, but it works. Ifthis isdone with the motor running, there will be an increase in RPMs if the advance is working. No need for fancy equipment, just a good pucker.
 

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Kidatheart,

Hello to a fellow Floridian, If you're anywhere south of central FLA you're probably sick of all the rain. I get a shower every afternoon on my way home from work.

So, I was wondering, what kind of gas mileage are you getting? I am suspecting a vacuum advance problem with my 82 Aspencade. I am only getting 30mpg after going through everthing else. The #3 cylinder runs rich, evident by the spark plug. I thought this rich condition on #3 could be caused by a vacuum leak in either the diaphram or the hose. What are your symptoms?
 

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Discussion Starter · #11 ·
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Ive tried thesuck with the mouththing and i can hear the adv working(click click) but it wont hold a vac long when i use the tonge to block off the line and i borrowed a hand vac pump and it will barley pull the adv on so im sure its got a leaking diaphram.Oh well.Thanks guys for the links to check out a new one.Dont think ill ebay id rather find new its to much of a pain to change to put on a used part that could crap out in a month.What id like to do is find a junk one first to see if i could mouse on a automobile vac diaphram sum how ill do anything to save a buck (ha ha)gas milage is only so so but i live on the west coast of florida(further south thanDaytona Cardkev)in a city so lots of stop and go plus i ride it hard.Thanks agin hope i answered questions asked of me also

KIDATHEART
 

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:DHey Smitty,

How many vac advance units do you have?

I am in need of one also for my 83' Interstate.

Post here &let me know.

Thanks, Mel
 

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Hey Smitty! Welcome to the board.... I'll be hollering at you soon, I need some parts for a GL1100 Standard...

Raymond in Austin
 

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MrMegoo wrote:
:DHey Smitty,

How many vac advance units do you have?

I am in need of one also for my 83' Interstate.

Post here &let me know.

Thanks, Mel
:waving::waving:Welcome to the Best Goldwing Site on the Internet MrMegoo!:waving::waving:

Glad to see you posting!
 

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Now that I know for sure that the vacuum advance unit is leaking, and I have a replacement waiting, it is going to bug the life out of me until I do the job.

The only problem is......... stripping the back of the bike down and removing the swingarm just to get access to this offending unit. This is an '83 GL1100.

It looks to me as if it might just be possible to get in through the battery box, and some very delicate finger work would be needed.

Has anyone ever replaced one of these things? Is it possible without major dismantling?

Thanks,

Gilbert
 
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Hey, Kidatheart,I can't get this forum to let me into the private messages? Call me 830-560-1872 or send your ph #,I will call you! Smitty
 
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