I think she's running ok!

[Wrecent_Wryder]

[4

[baco99]

i'll check it again.  i think i did get the bike to start on PRIME, when i switched to ON is lasted for 5 minutes while i played with the idle and then died. 

it might be the petcock. 

the vacuum hose is connected at both ends and fits fairly snug, but there's no "clip" holding it on. 

what i'd like to do it get a T-fitting for the Res and ON sides of the tank and just run it straight into the fuel line on the carb, doing away with that stupid petcock.

[Wrecent_Wryder]

4h

[baco99]

i'll give that a shot and report back tomorrow.
thanks for keeping me in the game!

[The Buddha]

Hydrolock I have heard almost cost one guy his reproductive ability.
He was standing next to a cruiser (I think Virago or vulcan or maybe a magna) and he cranked it and it launched the spark plug straight into his crotch ... The dude that came to buy my vulcan told me of this story.
Cool.
Srinath.

[spc]

  ( note to self: never stand in potential line of fire of spark plug )

[baco99]

OK.  I got her running tonight, but it runs pretty rough.  I checked the spark plug gaps and they were way off spec, too far apart.  cleaned the plugs and regapped to .030 in.  started firing on the left cylinder and then would die again.  Took the plugs out again and the right side had oil on it.  I think they're being Oil Fouled.  According to the book that means anything from potentially bad piston rings to idling for too long. Anyone have any suggestions on what it could be?

Also, the 2nd fuel petcock is definitely damned.  The bike only runs for any length of time on PRIME.  the other thing is that i don't know where the vacuum line to the petcock is supposed to go to the carb.  can anyone show me a picture.  the tube fits in like 4 places.  either way, i want to replace the entire petcock system from tank to carb with one tube, one valve, and none of this vacuum shaZam!.  any suggestions?  i've looked into Pingel and those Petcocks are like $50 not including a custom mount...Any other options?  Like from another bike?

I think with this fouled plug problem and the fuel delivery, I should be able to get it running consistently.


oh, and still for sale, btw...but now running!  $800 OBO.

[The Buddha]

The left carb has a fitting in the front and 1/2 way down and sorta looking at the right carb ... that's where it goes. The tops have vacuum spigots that should be capped off, the right side carb has the similar one to the left vacuum thing that has nothing on it. Its not drilled through and hence can be left alone.
The air sucking makes it run leaner on the left carb. Maybe.
The right is oil fouled - valve adjustment when was that done.
BTW you check the auxillary ground. Small wire from negative of battery terminal to the wiring harness. That fitting being loose = 1 cyl cutting out. Which cyl - random ... depends on the bike.
Cool.
Srinath.

[baco99]

i was able to ride it with both side pumping, so something triggered it. 
by valve adjustment, do you mean shims or something else?

i'll look at the carbs again and see if i can find what you're talking about.  there look like 2 places it will fit on the left, one closer to the intake, and one closer to the engine.  one is bigger than the other, but the tube will fit either. 


i'll also check the ground connection.

thanks

[trumpetguy]

Look at this pic:
http://cgi.stanford.edu/~sanjayd/gs500/Main/1989-2000

The vacuum hose is number 42 on the diagram. 

There are three hoses -- fuel supply, which goes to a "T" fitting between the carbs and low; a vent hose, which goes to a "T" fitting between the carbs and higher; and the vacuum hose, which attaches to a nipple on the left carb that points directly towards the right carb.

The vacuum hose has a 90 degree molded curve in it right where it attaches (see diagram).

Maybe that will help to ensure that all hoses are in the correct locations.

Oil fouling won't be caused by poor valve adjustment.  Faulty valve stem seals, maybe.  Bad rings, maybe.  But not valve adjustment.  Bad valve adjustment would show up in a compression test (especially a leak-down compression test), but wouldn't cause oil in the cylinder to foul the plugs.

[baco99]

so it's the nipple that is closer to the engine and thinner in diameter, correct?

i had it attached to the right carb.  maybe that's the issue.

also, the engine is spitting back fuel , running rich.  is this because i don't have the Wileyco on yet? 

[trumpetguy]

so it's the nipple that is closer to the engine and thinner in diameter, correct?

i had it attached to the right carb.  maybe that's the issue.

also, the engine is spitting back fuel , running rich.  is this because i don't have the Wileyco on yet? 

As you sit on the bike, the carb on your left (closest to the shift lever) has the vacuum port for the petcock.  It is small in diameter.

[baco99]

ok, i'll try that one.  so that makes it the port closest to the engine then.

[baco99]

ok, i did as you suggested and swapped the vacuum line to the left carb.  hit the switches and wroom, she started right up.  held idle nicely.

thanks for all your help guys.  if i decide to continue with this bike, i know what to expect.  and if i decide to follow-thru with a sale, at least it can be ridden home.

the right fork seal is weeping.  i think it needs the retainer clip put back in.  the old one broke off and i had to order a new one.  with that change, the new braided front line, and the exhaust, it will feel like a new bike.