Idle hanging in warm weather

tomseal6

tomseal6

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May 25, 2003
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I could only hope that this is fuel screw setting related. I cleaned the carbs on my SRX but did not clean and reset the fuel screw passages.

The pilots were completely clogged until I replaced them and I am wondering if the same has happened to the fuel screws.

I have the sled idling perfectly at 1800 RPM, I go to rev it up a little bit and the idle stays at 3000 until I blip the choke. This has to be a lean condition somewhere.

I believe there is also plenty of slack in the throttle cable. I can loosely move the cable that is attached to the arm on the carb.
 

should do a more complete cleaning. passages in the castings could have crap in them seeing that pilots were that bad. get em off. do it right. if it is o.k. after but wants to race upon deacceleration lower your warm base idle 2 around 1500 or so see if it helps. this means your cold idle will be fairly low. idle it up warm as close to 1800 as u can without it wanting to race.
 
I know the factory specs is 1800 but I tried it at 1500 and it always would come down on RPM's perfectly.

Is there anything wrong with letting it idle at 1500 rather then have a tuning nightmare?
 
I put it at 1600. Condition has greatly improved. The needle on the tack is 1 click above 1500.
 
david, i saw the other post after i put this thread up. I am having a hard time believing how just turning the idle down slightly solved this issue
 
TOM, MY SRX DOSE THE SAME THING. IDLE WILL HANG IF THAT ADJUSTMENT SCREW AIN,T SET PERFECT. KEEP IN MIND, ITS HOLD PRESSURE DOWN ON THAT THROTTLE ARM UNTIL YOU BACK IT OFF. MY 2000 SRX IDLES AROUND 1600. BESIDES YAMAHA ALWAYS GIVES YA AROUND THREE HUNDRED. PLUS OR MINUS. 3:16 (yammie tony)
 
I was pulling my hair out over the idle hang. Its much better now that I turned the idle down. I guess the triples like to idle close to 1500 or so.

The 01 came factory with 40 pilots. I already upgraded 42.5 Are you running 45's in yours? I guess Ill see how it runs when I get a chance to ride it but I am much happier with the way the sled idles.

I was thinking about putting the 45 pilots in but I was able to set the fuel screws to 1.75 turns out and it seems to be alright at that setting with 42.5 pilots
 
the vipers come with 45 no reason to believe that the srxs would not need them. technically they are a different engine but...... yamaha may have been pushing the limits. 2002 srx ran 42.5, headed in the right direction anyway
 
01 is the only year with the lean pilots (40's) I installed 42.5

If you check out my video in my carb cleaning thread from today bottom of thread, I just posted a video of the sled running today
 
tomseal6 said:
01 is the only year with the lean pilots (40's) I installed 42.5

If you check out my video in my carb cleaning thread from today bottom of thread, I just posted a video of the sled running today
Click to expand...

if u can run the 42.5 and u r happy with how it runs then that is better than running the 45. fine line i would say. they do have different porting maybe different ignition timing than the vipes
 
tomseal6 said:
01 is the only year with the lean pilots (40's) I installed 42.5

If you check out my video in my carb cleaning thread from today bottom of thread, I just posted a video of the sled running today
Click to expand...

Yeah 01 has the leanest pilots but richest mains I believe.
 
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