number 1 & 2 exhaust not getting hot and motor popping

[Crage]

I in fact DO KNOW that a CV bike will run on all 4 without the airbox and have throttle response..not optimally as I said, but it will run.

2..The only logical thing is that 1 and 2 are dirty inside...otherwise they would be firing.

Spark, air, and fuel are the three necessary elements for igniton.

He states there is spark on all 4 plugs...element one covered.
He has air obviously around the bike...element two covered.
He isn't getting fuel to the cylinders...element three FAIL.

What causes element three from getting to the cylinders?? Thats right junior scientist!!!!!! DIRTY PASSAGES IN THE CARBS!!!!!!!!!!!!!!!!

You missed the fact that there may not even be fuel in the bowls. Calm down mad scientist.

[chuck hahn]

See Crage..I talked to himon the phone right after he made the firat post...so you need to get some facts before you tell ANYONE to calm down!!

[Crage]

See Crage..I talked to himon the phone right after he made the firat post...so you need to get some facts before you tell ANYONE to calm down!!

You need to calm down.

[esmithers]

Loosen the fuel drain screws and see if you are even getting fuel to those 2 carbs. I bet you aren't, this has happened to me twice after putting rebuilt carbs on. I take a rubber mallet and tap the carbs until the floats drop and allow fuel to fill the bowls. I bet it something simple.

People tend to jump to the more complex solutions before checking basics.

when i notice they were not getting hot enough the first thing i do for both a overflowing and non flowing carb is tap the boats with a wooden dowl and a rubber mallet.

Additionally i tap them once i get them on so to not have them leak on me because of the aggressive movements.

[Crage]

Cool, I just know this has happened to me a couple of times after rebuild.

[hjfisk]

Have the valves been adjusted ? and if they have do you have the plug wires in their prospective places left coil wires #1-4 right coil wires 2-3 ?

[JTGS850GL]

So, after all this BS, Smithers, your other shim thread concludes you had wires crossed. Seems others in this somewhat vicious thread had their wires crossed too.

Some of you guys bashed each other and a few of you bashed the**** out of Chef, a member who has been here for a very very long time. A new comer pops up, and the conclusions jumped to and comments made are almost scurrilous. Shame on you guys.

Agreed... I read this post a while back and was very concerned about sending my carbs out. Seems that some were way too fast with the gun on Chef. Reputations are hard to earn and easily damaged. I would think twice before you speak out and do damage without knowing all the facts and jumping to conclusions.

[londonboards]

Does it sound anything like this:

https://www.youtube.com/watch?v=BcN2MbdMcgk

Go to 1min 57 secs

After complete and utter carb clean, it was only going on 2 cylinders.

Two things to look for:

1. Make sure you have the leads on the the correct cylinders.
2. Make sure the vacuum hose has no leaks and is connected to the petcock or is blocked off. Air getting into no. 2 carb through the vacuum hose would mess things up.

I checked both of those things and then had a 4 singing the same tune.

Greetings