Rejetting

[JMiller]

I think my trike is running a little rich, how should I rejet the carb? Should change the pilot jet, main jet, both or what?

[Tri-Z Pilot]

Where is it running rich? I.E. 1/4 to1/2 throttle? 3/4to full throttle?

[JMiller]

smokes and loads up while ideling and low throttle

[Tri-Z Pilot]

That would be your pilot jet, check and see if your pilot passage is clogged, or try adjusting your idle mixture. Is the carb dirty?

[Tri-Z Pilot]

Forget what I said about a blocked passage, I was thinking lean. Is this a bike that you just bought, or is it new?

[JMiller]

I've had it @ 1 year. Just rebuil the engine,(crank bearings, crank seals, all other seals, piston, & rings). The carb is spotless.

[Tri-Z Pilot]

Did it act like this when before you rebuilt it?

[JMiller]

Yes it did.

[JMiller]

The carb has stock jetting.

[Tri-Z Pilot]

Hmm, could just be the climate where you live, have you tried adjusting the idle mixture to lean it out? Make sure you do jetting changes when the bike is warmed up.

[JMiller]

The only adjustment on the carb is the idle screw. Could be the climate.

[Tri-Z Pilot]

You mean the one on the left side with the spring behind it?

[JMiller]

right side

[Tri-Z Pilot]

There should be a tiny screw somewhere on the carb which adjusts the idle mixture. If it is on the front of the carb (motor side) turn it clockwise to lean the mixture, but if it is on the back of the carb (airbox side), turn it counter clockwise to to lean the mixture. What kind of carb is it?

[JMiller]

Mikuni