One header Warm, the other Cold
Moderators: CYBORG, Oldewing, robin1731, Forum Moderators
- codyjames707
- Billet Alum. Member
- Posts: 299
- Joined: Wed May 14, 2014 3:53 pm
- Location: Vallejo, CA
One header Warm, the other Cold
Hey everyone!
Well, my motorcycle has been acting funny after i had to to take the carbs off for a bit. It wasn't able to hold the idle like it should and kept dying on me. I have a laser thermometer and when the bike was running, the front header would increase in temp. 200, 300, and so on; but the rear was barely hitting 100 degrees Fahrenheit. What is the issue?? I'm thinking the fuel jet for that rear carb might not be working properly? Thank you in advance!
.
Well, my motorcycle has been acting funny after i had to to take the carbs off for a bit. It wasn't able to hold the idle like it should and kept dying on me. I have a laser thermometer and when the bike was running, the front header would increase in temp. 200, 300, and so on; but the rear was barely hitting 100 degrees Fahrenheit. What is the issue?? I'm thinking the fuel jet for that rear carb might not be working properly? Thank you in advance!
.
- gltriker
- Honored Life Member
- Posts: 5053
- Joined: Fri Sep 24, 2010 9:11 pm
- Location: central NY State
Re: One header Warm, the other Cold
#35 Slow fuel jet is obstructed.
Cliff (74yrs )
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
Keep your eyes and ears open and you'll learn something new, everyday.
New users please visit our "Shop Talk" for common tips and help: <---jdvorchak
http://www.ngwclub.com/forum/page/ST
^^^^^^^click up here^^^^^
RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi
"Can't see the paint when your looking thru the handlebars..........." -Oldewing
"I'd rather Ride than Shine" -RAT Me Too!!
Cliff
'75 GL1000 home built trike; http://www.ngwclub.com/forum/viewtopic.php?f=30&t=39996
October,2017 BOTM https://nakedgoldwingsclub.com/forum/page/Welcome
previous rides:
1953 H-D Servi-car, naked, 1969-1978 (serial#53G1559 committed to memory!)
1980 CB900 Custom (triked) 1997-2003 .... R.I.P.
- robin1731
- Membership Admin
- Posts: 21724
- Joined: Mon May 29, 2006 8:31 am
- Location: Decatur, Indiana
Re: One header Warm, the other Cold
What bike?
1976 Goldwing Super Sport
1985 Honda Elite
1976 KZ900 Dragbike
1992 ZX7 Dragbike (KZ900 style motor w/NOS)
and a rotation of various purchases
Randakk approved Carb Rebuilder
1985 Honda Elite
1976 KZ900 Dragbike
1992 ZX7 Dragbike (KZ900 style motor w/NOS)
and a rotation of various purchases
Randakk approved Carb Rebuilder
- codyjames707
- Billet Alum. Member
- Posts: 299
- Joined: Wed May 14, 2014 3:53 pm
- Location: Vallejo, CA
Re: One header Warm, the other Cold
1977 GL1000
- chewy999
- SUPER BIKER!!!!
- Posts: 3214
- Joined: Tue Oct 16, 2012 11:21 am
- Location: Haddenham, Cambs, UK
Re: One header Warm, the other Cold
Sounds like a blocked jet. When I first got my bike, I could put my bare hand on one pipe while the others were hot. Had a go at cleaning the carbs myself and it improved, but then got them professionally cleaned to get them even better. On mine (1980 1100) the jets are pressed in but are possible to remove by inserting a screw and levering them out, so thinking of replacing them.
Previous Rides,
1980 CB250N Good to learn on
1981 CX500 good mid range tourer, went to Austria on it!
1983 GL1100C Pride and joy, sold when I bought my 1st house, big mistake
1985 GL650 Silverwing another mistake, horrible bike
1986 CBX550 Good commuter
1989 Suzuki GS750 (1976) cheap and cheerful until a dog ran out in front of me on Xmas Eve, 1991
Current bikes
2010 CB1300 back on a bike after 19 years, two divorces, children grown up etc
1980 GL1100 NOW ON THE ROAD, still use CB1300.
1980 CB250N Good to learn on
1981 CX500 good mid range tourer, went to Austria on it!
1983 GL1100C Pride and joy, sold when I bought my 1st house, big mistake
1985 GL650 Silverwing another mistake, horrible bike
1986 CBX550 Good commuter
1989 Suzuki GS750 (1976) cheap and cheerful until a dog ran out in front of me on Xmas Eve, 1991
Current bikes
2010 CB1300 back on a bike after 19 years, two divorces, children grown up etc
1980 GL1100 NOW ON THE ROAD, still use CB1300.
- robin1731
- Membership Admin
- Posts: 21724
- Joined: Mon May 29, 2006 8:31 am
- Location: Decatur, Indiana
Re: One header Warm, the other Cold
" the front header would increase in temp. 200, 300, and so on; but the rear was barely hitting 100 degrees Fahrenheit."
Four pipes. Are the rear pipes on both sides cooler or just the rear pipe on one side? One could point to a carb issue. The other to a possible ignition issue.
.
Four pipes. Are the rear pipes on both sides cooler or just the rear pipe on one side? One could point to a carb issue. The other to a possible ignition issue.
.
1976 Goldwing Super Sport
1985 Honda Elite
1976 KZ900 Dragbike
1992 ZX7 Dragbike (KZ900 style motor w/NOS)
and a rotation of various purchases
Randakk approved Carb Rebuilder
1985 Honda Elite
1976 KZ900 Dragbike
1992 ZX7 Dragbike (KZ900 style motor w/NOS)
and a rotation of various purchases
Randakk approved Carb Rebuilder
- codyjames707
- Billet Alum. Member
- Posts: 299
- Joined: Wed May 14, 2014 3:53 pm
- Location: Vallejo, CA
Re: One header Warm, the other Cold
It is actually BOTH the rear pipes on each side that are remaining cold. Spark plug issue??
(Thanks for the help here guys)
(Thanks for the help here guys)
- RB
- Honored Life Member
- Posts: 4268
- Joined: Sun Apr 29, 2007 7:26 am
- Location: AZ
Re: One header Warm, the other Cold
Could be your coil for 3/4..miss firing look at eh plugs are they wet/fouled black/sooty??? Pull the plug wires add a plug and check for spark..or you could swap some wires around and swap wires to the plugs and see if the issue follows. requires swapping some wires on the coils.
98 1500 SE..
99 1500 SE SOLD
97 SE 1500 SOLD
83 SOLD
82 REBUILT sold!!!
81 DAILY RIDER sold her ((!
81 REBUILT SOLD!!!
81 REBUILT SOLD!!
80 REBUILT SOLD
79 IN BASKET PARTS FOR SALE
79 CLEANED UP AND SOLD
78 REBUILT SOLD
77 REBUILT SOLD
76 SOLD/PARTIAL REBUILD
76 REBUILT AND SOLD
75 REBUILT SOLD
75 REBUILT SOLD
75 REBUILD SOLD
FAIR WINDS,
RB
99 1500 SE SOLD
97 SE 1500 SOLD
83 SOLD
82 REBUILT sold!!!
81 DAILY RIDER sold her ((!
81 REBUILT SOLD!!!
81 REBUILT SOLD!!
80 REBUILT SOLD
79 IN BASKET PARTS FOR SALE
79 CLEANED UP AND SOLD
78 REBUILT SOLD
77 REBUILT SOLD
76 SOLD/PARTIAL REBUILD
76 REBUILT AND SOLD
75 REBUILT SOLD
75 REBUILT SOLD
75 REBUILD SOLD
FAIR WINDS,
RB
- chewy999
- SUPER BIKER!!!!
- Posts: 3214
- Joined: Tue Oct 16, 2012 11:21 am
- Location: Haddenham, Cambs, UK
Re: One header Warm, the other Cold
You could swap the plugs to see if that helps. You do get dud plugs more often that you'd think, but I think you are unlucky to have two failures. Also check the plug gaps and the condition (oily, sooty, clean).
Previous Rides,
1980 CB250N Good to learn on
1981 CX500 good mid range tourer, went to Austria on it!
1983 GL1100C Pride and joy, sold when I bought my 1st house, big mistake
1985 GL650 Silverwing another mistake, horrible bike
1986 CBX550 Good commuter
1989 Suzuki GS750 (1976) cheap and cheerful until a dog ran out in front of me on Xmas Eve, 1991
Current bikes
2010 CB1300 back on a bike after 19 years, two divorces, children grown up etc
1980 GL1100 NOW ON THE ROAD, still use CB1300.
1980 CB250N Good to learn on
1981 CX500 good mid range tourer, went to Austria on it!
1983 GL1100C Pride and joy, sold when I bought my 1st house, big mistake
1985 GL650 Silverwing another mistake, horrible bike
1986 CBX550 Good commuter
1989 Suzuki GS750 (1976) cheap and cheerful until a dog ran out in front of me on Xmas Eve, 1991
Current bikes
2010 CB1300 back on a bike after 19 years, two divorces, children grown up etc
1980 GL1100 NOW ON THE ROAD, still use CB1300.
- Track T 2411
- Honored Life Member
- Posts: 8482
- Joined: Thu May 29, 2008 9:37 pm
- My Album: http://www.ngwclub.com/gallery/v/wingmans/Track+T+2411/
- Location: Prairie du Sac Wisconsin
Re: One header Warm, the other Cold
Both rear pipes (one on each side) suggests an ignition issue, as Robin said above. Quickest way to check is to pull each plug wire while the engine is running. You should notice a drop in the RPM's inn the good cylinders, and it would be less noticeable inn the poor running ones. You can also often hear the spark 'snap' across the gap if you have good good spark.
"I have no special talent. I am only passionately curious." - Albert Einstein
"He that is good with a hammer tends to think everything is a nail" - Abraham Maslow
"If you can't take the time to do it right the first time, how are you ever going to find the time to do it over?" -Unknown
Current Rides:
'Grumpy' - '81 Standard, now fully dressed.
'Layla' - '81 Standard w/dealer installed fairing and Hondaline bags.
'Scarlett' '76 'Survivor' nekkid as a j-bird!
Under Construction:
The 'Jalopy' '78-'79 Mash-up
'Quikie' '81 gl1100I back on the lift, project with the step-son!
In The Shed:
'81 gl1100I barn find aka "Josie, the farmer's daughter." (almost comatose build)
'77 gl1000, roller parts bike.
'82 gl1100I, 'Old Crusty' titled roller parts bike (free!)
'82 gl1100I, My first 'Wing, and an expensive lesson!
New2U Bike? Read Me.
"He that is good with a hammer tends to think everything is a nail" - Abraham Maslow
"If you can't take the time to do it right the first time, how are you ever going to find the time to do it over?" -Unknown
Current Rides:
'Grumpy' - '81 Standard, now fully dressed.
'Layla' - '81 Standard w/dealer installed fairing and Hondaline bags.
'Scarlett' '76 'Survivor' nekkid as a j-bird!
Under Construction:
The 'Jalopy' '78-'79 Mash-up
'Quikie' '81 gl1100I back on the lift, project with the step-son!
In The Shed:
'81 gl1100I barn find aka "Josie, the farmer's daughter." (almost comatose build)
'77 gl1000, roller parts bike.
'82 gl1100I, 'Old Crusty' titled roller parts bike (free!)
'82 gl1100I, My first 'Wing, and an expensive lesson!
New2U Bike? Read Me.
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