250yz revs high on idle or when clutch not engaged
I have a 88 250yz and it revs high when it is on idle. it sounds like if the choke was on but the choke is pushed down. also i noticed it leaks gas from a valve on the carberator. it turns on and runs good but as soon as i press the clutch to shift or even if its in neutral it revs high. also it takes a while for it to start after i turn it off. it seems to me that it gets flooded. any ideas how to fix or check the problem?
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do they revs drop off when taking pressure off accelerator pedal when out of gear? if only staying high during gear change it would suggest a worn clutch friction/pressure plate so the engine isn't slowing down when clutch is depressed .I'd also have the OBD codes read to see if there is a sensor/switch at fault , but sounds like the clutch to me
you must adjust the idling level..theres a screw way above the shifter (somewhere there) connected to the end of metal plate, turn to the right and idling level is high like yours, turn to the left and idling level is low...you figure where it'll sit right
I passed this question the first time I read it, so I will take a stab at it now. The fans don't come on until the compressor has pumped the freon pressure up to say 150 or 200 psi. And the compressor clutch has to have voltage to engage the clutch. I wonder if the clutch is going and needs 14 volts instead of 12 to engage ? Or the relay that powers the clutch ? Speeding up the engine would increase voltage from the alternator. This is assuming the serpentine belt is tight and everything else is working correctly. I think I would swap the relay with another and put a meter on that circuit to the ac clutch to see what it takes to engage it.
You understand there is a fast idle start position? If your saw is new it is triggered when the choke is pulled and remians in this position (even when choke pushed in) until the throttle is advanced once. Read your warm start instructions, it says pull clutch, push clutch, start. This is why we should buy saws from a chainsaw seller/mechanic NOT Home Depot!!!
I made the mistake ONCE of attempting to start mine without the fast idle engaged... my shoulder aches just thinking about it. GL