86 Tri-Z carb tuning

[Derrick Adams]

Going to try to post some pictures for you. Just want to make sure you understand what is what. Any year Banshee will work, I believe.

[keith-z250]

Any suggestion on the vacuum fitting? Maybe even stick a small screwdriver in the fitting to flare it out alittle? Then push it back in?

[twgranger]

Any suggestion on the vacuum fitting? Maybe even stick a small screwdriver in the fitting to flare it out alittle? Then push it back in?

mine kept popping out and i had to buy a new one. It is a must to have that pluged in or it will not run right.

[Derrick Adams]

I'll suggest this, because this is what I would probably try.

Assuming this is popping out of the Jug, tap it back in then take a center punch and and carefully tap a couple punch marks into the jug directly beside the insert. This will effectively spread the metal from the jug pinning in the insert.

If you don't follow me, grab a center punch and and tap it onto the very edge of something metal. You'll see it push the metal out past the edge.

Basically your just making the hole a little smaller, after you've put the insert back in.

Just my opinion on how I would do it. But i'm cheap!

[keith-z250]

Maybe JB weld would work?

[keith-z250]

twranger, did you purchase your new one at bikebandit.com? Cause I looked on there and on the cylinder they have a washer and bolt....Mine is just a fitting.

[twgranger]

twranger, did you purchase your new one at bikebandit.com? Cause I looked on there and on the cylinder they have a washer and bolt....Mine is just a fitting.

I called a shop and they ordered it for me.

[keith-z250]

I still can't figure out why my plug isn't brown. It is tan with a 380 main jet from stock 320 main. I warm it up and run it for awhile. THen change to new plug and do the plug check method. It is only tan. It doesn't blow out clouds of smoke and compression is still good when kicking it over which only takes 1 maybe 2 times. I don't think it is jetted to high or low. Should I just wait till I get the vacuum line fixed and water pump seal, then do my testing again?

[TimSr]

Keith, Im concerned about your coolant problem, and your vacuum hose problem and wouldnt touch a thing until you have those fixed. Normally the vacuum hose fitting can be tapped in lightly with a . If it wont stay in, and you cant find another, widen it by using a punch in until it expands just a hair, and tap it in. JB Weld can then be added for an extra measure, and it will hold there.
Your coolant problem may be your carburetion problem as well. The hotter a bike gets, the leaner it runs. If you are blowing coolant out the overflow, it is either leaking compression through the head gasket and into the cooling system, or it is overheating. Start the bike, and take the cap off the coolant resevior. If it leaks compression through the head gasket, the overflow will bubble and blow coolant each time you rev it. If nothing happens here, then you need to pop the radiator cap and check for coolant flow. If you are running a thermostat, it wont flow unless its at operating temp. Otherwise it will be immediately very obvious if you have flow. If you do not have coolant flow, your impeller has come apart, which is very, very common on TriZ's. If your impeller seal is bad, you will have coolant in your case oil. If you do not have coolant in your case oil, the impeller seal (waterpump seal) is fine. If you go to a dealer, all you have to do is ask for one for a TriZ. The correct part number will show up. The Banshee uses the same part number, so you dont need to cross reference anything. When your cooling system is working properly, then do you plug checks and adjust your carburetion. Plug checks should be done at normal operating temperature, but dont warm it up with the clean plug you will be checking it with.

[keith-z250]

Thanks TimSr, I will try that today. I already ordered a seal yesterday since it has never been changed and I see on this forum, it has been a problem with Z's. I will tell you guys what happens when I'm done