gl1500 sudden loss of 3 cylinders.


Information and questions on GL1500 Goldwings (1988-2000)
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virgilmobile
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gl1500 sudden loss of 3 cylinders.

Postby virgilmobile » Sat Mar 16, 2013 12:50 pm



I just filled up.Drove 5 miles through town and 5 miles on the interstate.
When I pulled from the off ramp stop light,the engine died as soon as I let out the clutch.
It was difficult to start and obviously running on the right side only.
a bit of throttle and the left side would kick in, jerking the bike.
I babied it back home jerking and bucking all the way.

I put a clear cup under the drain tube(right side of the engine)and opened the only drain valve I can reach from the front(through the radiator).
It drained 2 tablespoons of gas out and in the bottom was a bit of water.
Assuming that was the problem,I gases it back up but it refused to idle well,still not firing on the left side.

Out comes the compressor.....Using compressed air and a trigger nozzle stuck in the breather tube,I opened the drain valve again and blew compressed air into the breather tube.It blew the gas out fast so I refilled the Carb again and blew it out again.

I guess whatever was lodged in the slow speed jet was blown out in this process.....the bike starts and idles on all 6 cylinders now.

I pulled the fuel pump to look in the tank but found no water or garbage.The filter screens are intact.....
So this one is a mystery.

I suspect condensation accumulated in the airbox( Louisiana weather) and got into the left Carb.....My bike sets on the side stand....
A bit of the water ended up plugging the slow jet and compressed air into the breather tube dislodged it.



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virgilmobile
Posts: 7653
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: gl1500 sudden loss of 3 cylinders.

Postby virgilmobile » Sat Mar 16, 2013 4:35 pm

I'm also considering the condensation theory.But not in the air box.In the breather tube.
.On my 88 there is a "T" connector just in front of the gas cap.It goes to each carb body.
If condensation accumulated in there,it would end up in the idle/slow speed pathways.
Using compressed air forced the remainder of the water through the system and into the plenum safely.

I'm thinking of adding a charcoal canister to that empty line to prevent any further problems.
Any comments or other ideas????

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WingAdmin
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Re: gl1500 sudden loss of 3 cylinders.

Postby WingAdmin » Sun Mar 17, 2013 10:14 am

virgilmobile wrote:I'm also considering the condensation theory.But not in the air box.In the breather tube.
.On my 88 there is a "T" connector just in front of the gas cap.It goes to each carb body.
If condensation accumulated in there,it would end up in the idle/slow speed pathways.
Using compressed air forced the remainder of the water through the system and into the plenum safely.

I'm thinking of adding a charcoal canister to that empty line to prevent any further problems.
Any comments or other ideas????


Fuel/water separator from a boat? :)

User avatar
virgilmobile
Posts: 7653
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: gl1500 sudden loss of 3 cylinders.

Postby virgilmobile » Sun Mar 17, 2013 11:50 am

No I don't think it would help.I verified that day they there was absolutely no water in the tank or fuel lines.it had to be from morning dew accumulated in the breather side of the carbs.it settled on the low side.The left bank due to the angle of the bike on the kick stand.
It can't be inside the air cleaner box so the only thing left is the open breather tube.
I'm going to pipe it down to a charcoal canister and cross my fingers.
Lots of humidity this time of year here.




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