tri-z guys get in here

[steven 250sx]

i got a 1985 tri-z everytime i start it up it revs really really high what could it be? electrical? carb? gas mixture?any comments would help thxs

[SYKO]

air leak between the carb and the motor








oh btw im not a tri-z guy im just being nosy!

[225DX DUDE]

I dont have a TRI-Z but it may have to do with your idle screw!? Just thought I'd help.



225DX DUDE

[steven 250sx]

what should the idle screw be at? and i put soapy water n no air bubbles no i don't think there is a air leak

[oldsking86]

I'd choose between the 2 options given.. Yall honda boys beat me to it lol

[tri-Z ripper]

check your fuel filter may be clogged ever heard a 2 stroke as it is starving for gas? it reves like a mother! just throwing asimple solution out there

[steven 250sx]

ok thxs alot guys i think it just myt be my idle screw

[Bryan Raffa]

cable adjusted wrong or bad,, idle screw too high, C clip could have come off,intake boot ripped,intake gaskit, the idle screw should be around 15-1700 rpm, the cable should have a 1/8 slack before the throttle starts to open.then adjust idle..

[steven 250sx]

could it rev out so much that the kill switch won't work?

[225DX DUDE]

could it rev out so much that the kill switch won't work?

Is it running right now and it wont shut off?? Check your connections on the kill switch...

[Bryan Raffa]

could it rev out so much that the kill switch won't work?

only on ALKY!!:naughty: probley a bad switch or connection

[oldsking86]

If it revs up enough yea ayour kill switch won't do you any good sometimes, they call that detonation and that's defiantly not good!! Be careful

[Liquid-Darkness]

could it rev out so much that the kill switch won't work?

I hear this symptom is known as desiling. Its when the fuel supply has been shut off, when there is no more gas. The engine will self-combust from pre-ignition and pressure/heat until its done using all the fuel and vapors left in the cylinder+carb and bowl.

[steven 250sx]

ok where should my idle screw be? all the way in? haf way out? all the way out? a pic wud be helpful

[tri-Z ripper]

huh i told you to check fuel could be bad fuel pump clogged filter could be simple!

[ATC-Eric]

If you get the idle screw, and cables figured out and the thing still reves, could be a base gasket........

If it had a clogged or bad fuel pump, thing shouldnt run at all, much less rev up high....................

[225DX DUDE]

The tri z manual is under this link there may be a picture of it in there

http://www.3wheelerworldforums.com/showthread.php?t=56218

[factoryX]

you also might check the throttle pin becuase it might be stuck...

[steven 250sx]

yea but i wud like to check idle screw *Edited**Edited* checking that cus the idle screw is all out i would try it but i live in condensed neighborhood n cranky ppl so yea gotta wait till tommo

[steven 250sx]

also forgot to add i am new to this so you might have to explain stuff i bit better sorry

[steven 250sx]

also i'm looking for a case saver if any has one forsale thxs

[RID3R]

First I would make sure your getting proper fuel, not enough will cause it to rev high. Then check your throttle and see if you have just a little play. If not adjust the cable so you do, simple stuff that takes 2mins to check. Then go onto the air screw and checking the needle.

[factoryX]

that what i would do if i had a problem like that, that is how i blew up my honda express...

[ceaserthethird]

Same thing happen to me idle up hi , turn out to be the - Idle Screw

Screw was way out !

[ColeTrickle]

could it rev out so much that the kill switch won't work?

That happened to me once when the vacuum fitting for the fuel pump poped out of the cylinder base. (lower right side, see photo) The rig was really hot and raced wide open until it ran out off fuel. Kill switch wouldn't stop it so I pulled the plug cap and it still ran until the fuel was gone. Freaked me right out. It was so hot in the combustion chamber that it didn't need spark to light. This was on pump gas. :eek:

other options;
throttle cable too short
carb too lean
air leak; carb to boot, reed cage, base gasket, hose to vacuum fitting..
needle not seated
(most was already covered but thought I through it in anyways)

[steven 250sx]

wow thxs alot guys and its my idle screw it was all the way out how did it get like that tho? can they come out from the vibration?

[225DX DUDE]

I dont think the vibrating can make it come out. But maybe who ever had it before you did it and they didnt know what they were doin!? Your welcome for my help.



225DX DUDE

[TRI-Z RACER#3]

I would also check the pilot air screw..(the other small screw on the side of the carb) I set them to the motor when idleing. turn out till it picks up a little and then back in1/4 turn..shut off check how many turns it is out..more than 3 .go to biger pilot jet... but carb tuneing is a hole other thing..mabey the guy beforew you fussed with it. still get it running and spray a little wd40 around intake boot and gaskets also base gasket..lisen for changes..crank seals come to minde also..

[honda250sx]

http://sbdesigns.everything2stroke.com/index.php?cPath=39

Check this cat out for the case saver and other goodies! Hes a member. :)

[russell56443]

Hey Thanks Guy's,This answered all my ? without having to post!!!
Checking back posts Kicks A**!!!! :D

[ATC-Eric]

We're so proud of you Russell!1

:D