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  #1  
Old 06-20-2020, 09:00 AM
ardvark1's Avatar
ardvark1 ardvark1 is offline
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Location: Midlands UK
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Hot and Cold Exhaust

Fired up me bike after 9 years last week-end.
Started straight away this afternoon but.
The middle two exhaust pipes are boiling hot but the outside two exhaust pipes were cold to the touch when the engine started and by the time the engine was taken off the choke there was a hint of warmth. Could have been from the heat of the middle two.
What do you think?
Coils or carbs?
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  #2  
Old 06-20-2020, 09:53 AM
ardvark1's Avatar
ardvark1 ardvark1 is offline
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I've been messing and swapped the plugs around.
The two inside plugs with the two outside plugs.
Started no problem but now all four pipes are getting hot.
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  #3  
Old 06-20-2020, 12:22 PM
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oldyam80sg oldyam80sg is offline
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I would say pick up coil wires. I will be looking at mine Tuesday as I had a cylinder cut out on me the other day.
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1980 XS1100 SG
Inline fuel filters
New wires in old coils-outer spark plugs
160 mph speedometer mod
Kerker Exhaust
xschop K & N air filter setup
Dynojet Recalibration kit
1999 Kawasaki ZRX1100
1997 Jeep Cherokee 4.5"lift installed
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  #4  
Old 06-20-2020, 01:19 PM
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3Phase 3Phase is offline
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Quote:
Originally Posted by oldyam80sg View Post
I would say pick up coil wires. I will be looking at mine Tuesday as I had a cylinder cut out on me the other day.
Same.

Inner/Outer pairs are ignition
Left/Right pairs are fuel

Except when it isn't....
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1982 XJ1100J: "Baby" SS Brakes, '850 FD, ACCT
1980 XS1100G: "Columbo" SS Brakes, '850 FD, ACCT
1979 XS1100SF: "Bush" W.I.P.
2018 Heritage Softail Classic 117 FLHCS SE: "Nanuk"
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  #5  
Old 06-20-2020, 01:39 PM
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oldyam80sg oldyam80sg is offline
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Mine was sitting on bike left inner pipe was not as hot running. I swear I could feel it vibrate when I was riding along at 40 on a back road then it stopped with the vibrations, then rode fine the rest of the way.
__________________
1980 XS1100 SG
Inline fuel filters
New wires in old coils-outer spark plugs
160 mph speedometer mod
Kerker Exhaust
xschop K & N air filter setup
Dynojet Recalibration kit
1999 Kawasaki ZRX1100
1997 Jeep Cherokee 4.5"lift installed
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  #6  
Old 06-22-2020, 05:10 PM
oldyam80sg's Avatar
oldyam80sg oldyam80sg is offline
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Join Date: Apr 2007
Location: Hackettstown , New Jersey
Posts: 1,538
I took off the cover today and started the bike and pulled on the wires. I was able pulling on the wires to rev the engine but the wires are good. I'm thinking there is still some leftover gas from last year in the carbs and it needs to be out. I will take it out tomorrow for a ride but all the pipes are equally hot.
__________________
1980 XS1100 SG
Inline fuel filters
New wires in old coils-outer spark plugs
160 mph speedometer mod
Kerker Exhaust
xschop K & N air filter setup
Dynojet Recalibration kit
1999 Kawasaki ZRX1100
1997 Jeep Cherokee 4.5"lift installed
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