88 DT85 to much air not enough fuel

[72INVADER90HP]

I am having trouble with my 88 DT85. the speed is spuratic it does 3000 RPMs at WOP and then speed uo to 5000 RPMs at WOP. when I push on the key to choke it when I am doing 3000 RPM at WOP it picks up speed. Could any one tell me what to check for.

 

[jim dozier]

Re: 88 DT85 to much air not enough fuel

You either have dirty carbs or a failing fuel pump. You can check for the fuel pump by having someone pump the bulb while you are trying to go WOT. If that helps rebuild the fuel pump diaphragm. It is more likely the carbs. Remove all of the carbs, disassemble them, clean the orifices with carb cleaner and compressed air, install the rebuild kit parts, check the float settings, set the idle air mixture screws to the factory number of turns out from seated and reinstall the carbs. You'll be good to go.

 

[DJ]

Re: 88 DT85 to much air not enough fuel

Dirty Carbs.