Has anyone messed with the air screws on an apex?

[relentless rider]

NEW BUILD!I tried to adjust the idle on my t apex by adjusting the 4 air screws and had to take to Yamaha to have them put new screws and set to factory setting.will this fix my idling problem?sled has hard time starting and wont idle!

 

[SRXSRULE]

Dont adjust the small 4 screws, Use the large adjuster. Its a white plastic thumb wheel with a philips head in the center. You can see it from looking through a vent from the side of the side panel. I take my sled from sea level to 10,000 ft and have to adjust my idle. Eric

 

[relentless rider]

Thats the problem,i did adjust the 4 screws!I had the timming off the first time that i adjusted the screws trying to make it run right.So i check the timming and it was off a tooth.fixed timming and now it still wont idle or say running,is this because the air screws are not set right??

 

[zal]

Which kit do you have?

 

[relentless rider]

BD 2860,with fastrax fuel box,

 

[sledfvr]

I helped put the turbo on this sled and it seems to idle good until you get into boost then it blows some black smoke (rich condition) and then usually dies. It runs good without boost hooked up. I'm wondering if its in the fast trax controller. Has anyone tried one of these and had any luck with them?

 

[stepup]

when I did my mcx apex kit I had to go into the diagnostic mode on the stock gauge and lean out the fuel for each cylinder.

 

[relentless rider]

On the diagnostic mode witch # can i find to adjust to lean out the cylinders

 

[stepup]

first ground the pale green wire in the connector on the left side of the delta box with wire or paper clip. Key and kill swit off press and hold select and reset then power up gauge. Wait 8 seconds and "DI" will display. Press select and switch from "DI" to "CO". Press and hold select and reset for 3 sec. Gauge will display "CO:1" (cylinder 1) Press and hold select and reset 3 sec. and 0 should display. "Select" to increase (richer) and "reset" to decrease (leaner). Press select and reset to chose "CO:2". Go through all four.

 

[relentless rider]

first ground the pale green wire in the connector on the left side of the delta box with wire or paper clip. Key and kill swit off press and hold select and reset then power up gauge. Wait 8 seconds and "DI" will display. Press select and switch from "DI" to "CO". Press and hold select and reset for 3 sec. Gauge will display "CO:1" (cylinder 1) Press and hold select and reset 3 sec. and 0 should display. "Select" to increase (richer) and "reset" to decrease (leaner). Press select and reset to chose "CO:2". Go through all four.

Who else has had to do this?First time ive seen this talked about!

 

[jsandgren10]

Ive done it to my impulse apex, made it run a lot better on idle. Most any impulse or I believe Alpine cut the CO values. It's easy to do and if you run 5k feet and up I have mine cut to -25.

 

[Polarisrocks]

If you run a dobeck style box you will need to run atleast a -15, more like a -25. We run the rb3 now and it runs at 0 and runs flawlessly.

 

[relentless rider]

apex

thanks guys for the help! I set it at -25 still will not idle I'm thanking it might be the pressure sensor that has the hose running to it.I tested and I'm only getting 2.5 votes,should be around 4.5 5 right? And code 14 comes up when it wont idle.Have all new hoses to bov,boost gauge and to sensor,so no leaks.What do you guys thank??It idles when first started, than if i rev it up,getting into boost and let off it starts to smoke and than will die.

 

[SRXSRULE]

Who else has had to do this?First time ive seen this talked about!

I play with those settings on my Non-boosted Apex. When you add a high flow exhaust system and mod your air-box you have to play with these settings. Eric

 

[sledfvr]

Has anyone else had problems with the pressure sensor? We tried to dry it out and try it again and it still shows code 14.

 

[skibumm]

first ground the pale green wire in the connector on the left side of the delta box with wire or paper clip. Key and kill swit off press and hold select and reset then power up gauge. Wait 8 seconds and "DI" will display. Press select and switch from "DI" to "CO". Press and hold select and reset for 3 sec. Gauge will display "CO:1" (cylinder 1) Press and hold select and reset 3 sec. and 0 should display. "Select" to increase (richer) and "reset" to decrease (leaner). Press select and reset to chose "CO:2". Go through all four.

Very helpful!