? about exhaust pipe heat.

Started the bike first time today. Did not ride, just wanted to get battery back in and hear it run. I need to replace the steering bearings and wanted to get going on it before too long. My ? is, when i first started bike it appeared to be running good like it always has that i know of. While it was warming up on the choke, i touched all the headers one at a time to see how fast it was warming up. The #1 cylinder was cold down low and starting to get hot up at the top. The other 3 were quite warm down low already and were close to the same with #3 being slightly cooler too. I put the spark tester on and that looked great. What would be your first thing to check? Should'nt all the cylinders heat up at the same rate? It did get hot after about 5 minutes of running.
Help anyone?

 

I am now assuming carb problems in the enrichment circuit area. They were cleaned and synched last year. Ran great all year, but i never felt the headers as it was warming up last year either. So this could have been like this last year. If it is due to the enrichment circuit on the #1 carb, will this have ill effect in overall performance after warm up? or is this only when starting the bike? I will pull the plugs and see how they look.

 

I'd check the plugs Dave but while chasing 2 cylinders not firing on my bike I did notice some discrepancy in heating - not a lot but some.

 

Plugs are dark dark brown. Borderline black on the tips on all plugs. the white area around the electrode is pretty much white. They are not wet. I did let bike warm up to where it would run with out choke. Then i shut it off.

 

I should mention that i have not colortuned or even pulled the plug on the pilot adjustment screws. They are still set to stock. After a carb cleaning would you always want to adjust these along with a colortune? Or will the stock positions be alright?

 

Yea they will soot up good when you just run it with choke and don't take it out. Clean them and swap say 1 and 4 then check your pipes. You can see if it's the plug or what. I also fouled a set of plugs just running it every couple of weeks. Spent hours trying to figure out what was wrong - new plugs and it fired right up!

 

Things change over time so you would want to tune it. now If you clean the carbs you should take the mixture screws out anyway which of course changes things.

 

Bingo! I did not remove the tamper proof plugs when i cleaned them. In fear off wrecking something i left them alone. I might just pull the rack of carbs again and have another look.
Thanks

 

Hmm then I have to ask did you soak the bodies in carb cleaner or other? There is a spring washer and oring in there. The oring would be damaged if you soaked them. If not they may be ok but you want to take it apart and clean well anyway.

 

are these double wall pipes ?

 

Not sure what you mean?
If your talking the headers, then i can tell you there original and im assuming then yes they are.


I did not soak them so hopefully i will be ok.

 

Id suggest running plug chops if you think its a fuel/air issue

The cold #1 could be a symptom of a richly tuned cylinder...

 

now see what you went and did, planted the seed of doubt
the enrichment circuit is just there to get a cold motor warm, then it's just along for the ride
there could be some leaks in the inner pipe that let the outer pipe heat up faster

 

When doing a plug chop you want to look at the "white area around the electrode", the insulator, this is what should be tan.
I would try to colortune first before I ripped them back off.
Might save you some time.