Octane's Corner

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Re: Octane's Corner

#1

Post by octane »

This section is OPEN for business again !

.-)


.
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Re: Octane's Corner

#2

Post by Hoosier Daddy »

Hurrah!
Pints for the house!!!!
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Re: Octane's Corner

#3

Post by Roady »

Good deal. Make mine a Guinness.
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Re: Octane's Corner

#4

Post by Track T 2411 »

[quote="Roady"]Good deal. Make mine a Guinness.[/quote]

+1

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Re: Octane's Corner

#5

Post by 05c50 »

I'm glad to see it (you) back. Lookin' forward to the future posts.

..........Paul
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Re: Octane's Corner

#6

Post by octane »

Thank you Paul !
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Re: Octane's Corner

#7

Post by figixa »

Hey there Octane, I am new the the ngw site. I just purchased a 77gl1000 last summer. I am looking forward to getting it out ASAP, but last year i cleaned and rebuilt the carbs, but then afterward it would start fine then i would die out after a minute of so. I changed the fuel out and the oil so im not sure what it may be??? Also after it dies out the is a good amount of fuel that leaks out of the exhaust. I have the air fuel mixture at the factory specs. If you have any idea about this i would really appricate it.
thanks
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Re: Octane's Corner

#8

Post by octane »

Hi Figixa.
Welcome to the forum!

Your problem is a bit confusing.

You have spark on all four cylinders ( checking right after it dies ) ?
Are the spark plug wet right after the engine dies ?


Did you adjust the float-level when doing the carbs?
If they are seriously out of whack, you'd drown the engine.
Would probably run for a short while before that.

What exactly did you do and how did you do it,
when you 'cleaned and rebuild' the carbs ?
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Re: Octane's Corner

#9

Post by figixa »

When i cleaned the carbs i basicly cleaned them and bought new o rings and gaskets but did NOT buy new jets. After taking everything out we cleaned everything immaculately using carb cleaner and gasoline. We did adjust the float bowls, but that would make the most sense out of anything. But i know they weren't grimmy or stuck open or closed. We didn't check with stock tolerances, so im thinking im going to have to rebuild them again. :(
If you think i should rebuild them, i have been debating on moving up to a gl1100 carb because of the accelerator pump and word that they are easier to rebuild and tune. What do you think???

I appreciate all your help
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Re: Octane's Corner

#10

Post by octane »

figixa wrote:When i cleaned the carbs i basicly cleaned them and bought new o rings and gaskets but did NOT buy new jets.
There's no reason why you'd want to replace the jets, unless of cause there was something terribly wrong
with them ( unlikely ).
After taking everything out we cleaned everything immaculately using carb cleaner and gasoline. We did adjust the float bowls, but that would make the most sense out of anything. But i know they weren't grimmy or stuck open or closed. We didn't check with stock tolerances...
Sorry: I don't understand;
did you adjust them to spec or ...?

Please check this thread: Carb rebuild
and tell me which of tose things mentioned in the thread you did and did not do,
in particular check this: float height adjustment
(scroll down a bit)
and tell me if that's what you did.
If you think i should rebuild them, i have been debating on moving up to a gl1100 carb because of the accelerator pump and word that they are easier to rebuild and tune. What do you think???..
Don't!

They are not easier to rebuild or tune, and they basically do not fit the engine.
This is somewhat controversial, and others will disagree, but please check here:
Running GL1100 Carbs on a GL1000?
( Scroll down a bit )

Again:
You have spark on all four cylinders ( checking right after it dies ) ?
Are the spark plug wet right after the engine dies ?
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Re: Octane's Corner

#11

Post by figixa »

Yeah i got spark in all 4 cylinders. But why would i want to check them after the motor dies? I guess i dont understand the reasoning behind it.
And the plugs are definitely wet after it dies. I'm heading back home for spring break so i think im just going to rebuild the carbs again. I dont want to but i think it will good to retrace my steps and take my time.
Thanks for the information on the carbs! I just thought having a accelerator pump would make the bike accelerate better.

so is that supercharged gl yours?
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Re: Octane's Corner

#12

Post by rickk »

Octane,

Been looking for a place to ask this question and this seems about as good as it gets.

I have a 1976 GL1000. Just purchased it and it was sitting for 2 years.

bike is cosmetically beautiful but the mechanics need some help.

(carbs had more varnish than my wood deck!)

I rebuilt my carbs with a Randakks kit.

Cleaned and blew out every orifice with cleaner, water, air. (repeat......)

Set float heights to spec: 21mm

Checked plenum seal as per Randakk suggestion. Air lines held solid. Gass lines held solid.

Air/Fuel mixture needles set to 2 turns.

Balanced carbs and before I did any of this, adjusted the valves.

Did not check electrical as it starts right up and accelerates just fine.
Have not inspected the timing belts to see if they are perfectly aligned with the cam sprockets.

The problem is setting the idle. Can't seem to find anything that I can adjust that makes any difference.

The fule/air mixture needles almost do not make any difference when turned.

Because of this, I noticed that I had an air leak in the throttle shafts of Carbs 3 and 4. (I sparingly used some starter fluid and a nozzle to locate this leak.)
So, before I tore into the carbs again, I smeared some grease on these shafts and that plugged up the leak.

But I still have the issue with no significant changes to the idle when the fuel/air needle is adjusted.

That is one issue.


I have another:

After the engine is warmed up, if I close the choke, the engine revs up to 3krpm. (no issue here) BUT, when I open the choke, the engine revs to 4krpm for a second or two and then drops to a very low rpm, less than 950, and sometimes dies. (This is why I initially searched out an air leak, thinking I was running too lean.)

I thought that stopping the air leakage on the down side of the air fuel flow would have fixed this but I quessed wrong.

What are your thoughts on this air/fuel needle thing and the choke RPM thing?

Thanks!
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