GL1200 carb issue, or electrical issue - Steve Saunders Goldwing Forums

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post #1 of 23 (permalink) Old 09-17-2012, 05:56 PM Thread Starter
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Location: webster mass, USA
Year: 1985
Make: honda
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this is my first post,
after starting in the am after off choke,i take off with my 1985 aspy will popp and backfire till i get over 3000 rpm,i was trying to get the carbs sync before we did that we did a compression check 3 cyls has 180lbs.1 cyl had 130 lbs we added oil and it cam eup to 180 like the rest,i have taken the carbs apart twice and cleaned them,still having the same issue,and it seems to be getting worse since the mornings are getting colder
sorry for the long post any ideas thank you
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post #2 of 23 (permalink) Old 09-17-2012, 06:13 PM
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Location: Glendale, Arizona, USA
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Welcome to the forum.

Sounds more like you are sucking air somewhere.

Why ain't we ridin'?
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post #3 of 23 (permalink) Old 09-17-2012, 06:26 PM Thread Starter
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Location: webster mass, USA
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the plenum was drilled out by the po is the old spray test the best way to check around
all the mount surfaces thanks
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post #4 of 23 (permalink) Old 09-17-2012, 07:45 PM
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Take a close look at the o-rings where the intakes mate up to the cylinder heads. They will flatten out over time and tend to cause a leak issue which can be worse when cold and as everything warms up, the problem can go away. The best source for carb parts is Randakk's...... Good Luck!

76 GL1000/ 48,000 miles-Sulfur Yellow
76 GL1000LTD
84 GL1200 (LTD Clone)
85 LTD w/ PoorBoy conversion
98 GL1500SE
2004 GL1800 (double darkside)daily driver
2007 GL1800
and several doner bikes.
The numbers are ever-changing
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post #5 of 23 (permalink) Old 09-18-2012, 05:54 AM
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A good test for vacuum leaks is an unlit Propane torch on low setting. If the rpms increase you found the leak(s).

Stu
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John 14:6 Psalm 118:19-29
CMA Wings of Eagles-Escondido, Patriot Guard Ryder
+2008 Cabernet Red ABS/Airbag bought 6/2013 @16,000
+1983 ASPENCADE Barn find @36,000 to be sold
+1976 CB750K6 @25,000 was Dad's
Previous bikes
-1999 GL1500 ASPENCADE Red Sold barn find restored
-1999 GL1500 SE(@57k)(totaled by cagger @105,000) Feb 2013
-76 CB750K Red(new) sold @ 45k
-75 CB750K Blue(new) 9,000 mi Before cousin totaled it.
74 CB450 Burnt Orange(new) 9,000 miles sold
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post #6 of 23 (permalink) Old 09-18-2012, 06:04 AM
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ole wing wrote:
Quote:
this is my first post,
after starting in the am after off choke,i take off with my 1985 aspy will popp and backfire till i get over 3000 rpm,i was trying to get the carbs sync before we did that we did a compression checkĀ* 3 cyls has 180lbs.1 cyl had 130 lbs we added oil and it cam eup to 180 like the rest,i have taken the carbs apart twice and cleaned them,still having the same issue,and it seems to be getting worse since the mornings are getting colder
sorry for the long post any ideas thank you
More info needed.

How did you clean the carbs?
What is the history of the bike?

Pull the plug wires and caps and inspect for corrosion. Replace with new 7mm bulk wire, 6' cut to 18" ea. New NGK spark plug caps. Ambient moisture will get in the cracks of old wires and plug caps and you will get the popping, hard starting while cold and smooth out as engine heat warms up and dries the moisture in the cracks out.

Stu
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John 14:6 Psalm 118:19-29
CMA Wings of Eagles-Escondido, Patriot Guard Ryder
+2008 Cabernet Red ABS/Airbag bought 6/2013 @16,000
+1983 ASPENCADE Barn find @36,000 to be sold
+1976 CB750K6 @25,000 was Dad's
Previous bikes
-1999 GL1500 ASPENCADE Red Sold barn find restored
-1999 GL1500 SE(@57k)(totaled by cagger @105,000) Feb 2013
-76 CB750K Red(new) sold @ 45k
-75 CB750K Blue(new) 9,000 mi Before cousin totaled it.
74 CB450 Burnt Orange(new) 9,000 miles sold
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post #7 of 23 (permalink) Old 09-18-2012, 06:25 AM
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How long are you running with the choke on ? My 1200 needs a little choke when still cold or it will cough/stumble, the colder the longer it needs it. Just a thought.

Jim

Body and Bike in southern Georgia,heart and head back in the Del/Mar/Va.
Jim

"Member of lousy spellers of America"
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post #8 of 23 (permalink) Old 09-18-2012, 06:35 PM Thread Starter
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Location: webster mass, USA
Year: 1985
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i took the carbs apart but left left them on the plenum,i took out the all the needles and float valves and cleaned them with a very thin wire,the history for the bike was the po left it uncovered and tank full of fuel for the 3 years,he lost the title and b.o.s
he left it for dead
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post #9 of 23 (permalink) Old 09-18-2012, 06:38 PM Thread Starter
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Year: 1985
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i had the issue before it started to get colder,but not as bad,i was reading in this forum about shimming up the needle valve with the correct part numberwasher from home depot for the part i can say this did not cure this issue,so i returned it back the way it was
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post #10 of 23 (permalink) Old 09-18-2012, 06:38 PM
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My 83 was neglected that way for 13 years in a hot garage. 3 months of restoration.
b.o.s.?

Stu
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John 14:6 Psalm 118:19-29
CMA Wings of Eagles-Escondido, Patriot Guard Ryder
+2008 Cabernet Red ABS/Airbag bought 6/2013 @16,000
+1983 ASPENCADE Barn find @36,000 to be sold
+1976 CB750K6 @25,000 was Dad's
Previous bikes
-1999 GL1500 ASPENCADE Red Sold barn find restored
-1999 GL1500 SE(@57k)(totaled by cagger @105,000) Feb 2013
-76 CB750K Red(new) sold @ 45k
-75 CB750K Blue(new) 9,000 mi Before cousin totaled it.
74 CB450 Burnt Orange(new) 9,000 miles sold
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