#2 Cylinder not firing

Okay so here's the deal... don't think I have a carb issue, I've been puffing smoke out of the left side for about a week so I decided to squirt the front pipes with water. #1 and #4 the water vaporized off of immediately. #3 the water sizzled but a little ran down and off the pipes. #2 no sizzle, the water all ran down and off the pipe and it's cool to the touch.

So here's what I did... I took out the #2 spark plug, it's black. I took the #3 boot and ran it to the #2 cylinder and the bike fires and runs with nothing connected to the #3 cylinder. But when I did this gas

Alright, here's the rest since it didn't all load...

...when I did this gas ran out of the #1 carb overflow hose, a lot. I ordered new plugs and a left side coil since it controls #2 and #3 and the boots come right off the coils I have, no screw in portion just a bare wire inside the rubber boot sleeve.

I'm looking for any suggestions... is this the problem and will new plugs and a coil likely fix it? Is there anything I can do to help the #2 cylinder get running again now that it's pretty gunked up from not running?

Thanks all.

it is fuel related you have a carb problem in no 2 a coil probably won't do anything if you had fuel pouring out the vent it will be needle and seat problems pull your carbs off and check them out again.

The carbs were clean as a whistle when we pulled them off to clean... so I wonder about that. The only thing we were thinking because of the bogging down issue was that I needed to rejet because I have air filters instead of an airbox.

if fuel is pouring out a vent it can be only one thing that will cause that did you inspect the needles for grooving or pitting on the seats or wear on the body of the needle or the bore of the seat. your air filters have no effect on fuel flow into the carb bodies.

No, I did not. I will be tearing them apart again in the next day or two anyway, but I do wonder why the fuel only pours out of the #1 carb overflow when I have the #3 spark plug boot hooked up to the #2 cylinder? Just seems odd to me. It's not doing it when #2 is hooked up to #2 and the cylinder is cold. I'm a new rider so I don't understand a ton yet. :dry:

I took some video, maybe it will help.

Hey bro,

If you plugs are sooty, on 2&3 then swap in new plugs. B7ES are the best for this issue as they are hotter and will not carbonize and foul. Do yourself a favor and order a complete extra set, ie 8 spark plugs, so there will no waiting time. It is always cool to have an extra set on hand under your seat in case of emergency.

Many of us have had the leaking carb problem in the past.It used to happen to me all the time. But it has not happened in 2 years. People say it is dirt under you needles, others say it is related to a problem with the diaphram in you petcock. The solution to both are buy an inline fuel filter and rebulid your petcock.

Regarding the fouled plugs, if not done complete the WG coil mod. Search the forum for posts. One of my cylinders was down and all I had to do was replace the fouled plug and volia, like new again.

Concerning the pissing carb...... you could remove the carbs to inspect them. But it has never worked for me. You could spend hours frigging with them taking them on and off the bike, but I take a PLASTIC OR RUBBER mallet or hammer and rap on the carb! Dont be a wimp, hit it with enough force to drive in a nail. I often use a piece of dowel to reach #2 or #3 if they are the culprits.

KR

Kool Rider,

Thanks for this advice... I already have a petcock rebuild kit on the way because I've had a little leakage so... I'm glad this might solve a lot!

When you're talking about rapping on the carbs are you referring to making sure that they are seated properly? I'm not sure they are incorrectly seated since they go on pretty easily and all the way into their base. They all have good suction I can put my hand on any one of them and get it almost sucked in and nearly stall the bike. So I think you may be right... I'll start with the petcock rebuild, new plugs and we'll see what happens from there.

Thank you!

As crazy as it sounds, I mean take a rubber mallet and hit the number 1 carb!!! (With the carbs on the bike)A normal hammer with a piece of wood will not cause any damage to the carb body. Some guy's might laugh at this solution, but I learned it from someone else on here 2 years ago. It works.

I think it helps dislodge a stuck float in the carb which then closes the carb and prevents the cycle of filling and then overflowing.

I have had to do it 2 times since I owned my bike. Once it was #4 and once it was #1. It really sucks when this happens because gas flows out constantly. I had a tank of gas completely drain into a pale at one point.

I got so frustrated that I hauled off and belted the carb and volia, magically the carb stopped pissing gas in the 15 second intervals. Basically I think that it takes that long for the carb to fill and then "overflow" out of the bottom nipples.

Also, try removing the drain screws. they are flatheads at the bottom of the carbs. Have a spray can top or a pale to catch the gas as it runs out. This may flush out any dirt in the specific carb.

Good luck man because I know how frustrating this can be. Especially with the price of gas these days.

KRB)