Too much fuel, running rich!

Having trouble with 1973 t140v bonnie.

Have just fitted brand new wassel carbs and new boyer ignition system! Had full electronics tested and checked and all is working the way it shud except for the right side of the engine. Once started the right side is alot cooler than left. Spark plug becomes wet with fuel and upon inspection with a camera found a liitle fuel sitting on piston! When i shut the fuel off on right hand side the black smoke from exhaust stops and bike runs sweet and heats up perfect, then have too put fuel back on to fill carb. Obviously there is too much fuel going into the engine on that side. Been told its the float level. Anyone had this issue or have any idea if im missing something.
Cheers
Tiger

 

Done that and its all clean, compared float to other side and they are identical in set up!

 

Hi Steve, thanks for your reply again.

Im almost aure both cutaways are identical, and the circlips are in the same position.
I have swapped over float bowls and floats and getting the same problem, my next step was to as u said swap complete carbs over but after working on this constant for last 2 days i stopped earlier and decided to try that tomorrow after work. It is really getting a pain as ive not been out a run longer than 30 mins haha.

I do know that there is fuel getting into engine and not burning which results in the at side of the engine not sparking and therefor not heating the same as left side. I am hoping the problem will carry to other side when i swap carbs over so i know it is a carb problem for sure. If that is the case i will try contact wassell!

Thanks again for the help steve

 

Hi graham. Thanks for the advice.

Bike already had boyer system fitted. Also amal carbs. But bike had lay for 10years without being started so had an overhall.

To date i have cleaned out tank, new fuel pipes, and cleaned carbs. Had trouble with carbs so just bought new wassell ones as read and heard they were worth it. also got new spark plugs, and champion spark plug caps. Ht leads tested and main coils tested (all good) and had witing all done to way it should be by a very experience auto electritian who loves old triumphs.

When i fitted new carbs the right side was mis firing at times and was not running as smooth as left side. I got a 30 min run and bike cut out, turned out to be boyer system, so got new system fitted. Also one of the new champion plug caps went faulty (open circuit) so went back to old ngk plug caps which have been tested. And all electrics checked and swapped plugs and main coils over to eleminate possible electrical faults.

Yday i swapped floats over, same thing. Then swapped float bowls and floats together, same thing. Tonight i swapped complete carbs over and now the problem is on the left side of engine, so it is definetly the right carb.

I am going to take carbs off tomorrow night and take them apart to compare and see what the difference is. Hopefully i find something obvious.

What should i look for in particular? Adjustment screws are set the same on both carbs so it has to be somethin inside the carb?? I am totally new to all this the past week but getting a rough idea from feedback here and youtube vids.

Really appreciate the help graham

 

Forgot to say sparks are good and all is good with new battery. Still have to get the timing perfect but was put in position of previvious. Just the carb is running far too rich.

 

Cheers dave

Have read that new carbs can be funny and do need the adjustment.

 

Have swapped float bowl, floats and and float cut off needle round before i swapped complete carb and there was no difference. So must be pilot jet. These wassell carbs are a complete copy of the old amals, thats a reaseon i got them. It is mainly on 1/4 throttle so will check that tomorrow graham and let you know how i get on.

Thanks again for info.

 

Have now swapped complete carb round and prob was now on the other side so it is defo the carb. Tonight i have cleaned the carb out, jets everything and still no joy. Everything was clear. Sent the seller a message so see what he says. Very frustrating this

 

Hi camman. Got a replacement carb and is running better. But i now have puffs of white smoke coming from carb on right side. Someone told me its the intake valve needing re-seated?? So head off and check over weekend. The joys of an old bonnie eh haha.