Idles at 5k after clearing a pilot jet??? HELP!

[gs45082]

Have a 1982 gs450t doing exactly the same thing. Similar results pulled carbs airbox checked everything can't figure out why the idle won't come down. Any help would be appreciated

Hey I got it figured out, the carbs were so badly out if sync one was held open quite a bit. Been riding her around on some errands, feels like a dirtbike after the gs1000 around for weeks.

@Brodavid, are you absolutely certain the throttle cable is slacked? What changed when it started idling high?

[gs45082]

Here's a pic image.jpg

[Brodavid]

Original problem was that it started and ran and installed when shifted into gear brought it home checked everything out pull the carbs clean the carbs inside and out put it back on and the idle was high. Check the slack in the throttle cable and took the throttle cable completely off the idle went down but then it chugged installed. Took the carb apart again and did a more thorough cleaning pulled diaphragm slides needles pilot jet everything I could think of the carbs spotless. We did the airbox check the throttle cable we ran it so it was no problem with the cable put it all back together and it still idles at 5 grand. Also check the sync bench check that and it seems fine.

[60ratrod]

Bench sync is a good starting point, but a vacuum sync should get rid of the idling problem. A bad sync will mimic vacuum leak issues

[Rob S.]

You said starting on full choke causes 5k rpm rev, then turning the choke off kills it?

What about slowly backing the choke down a bit at a time?

It's normal, according to Cycle World, for my bike to start instantly on full choke, with idle then climbing to 4500 rpm and rising unless the choke is quickly backed off to about half.

[gs45082]

Original problem was that it started and ran and installed when shifted into gear brought it home checked everything out pull the carbs clean the carbs inside and out put it back on and the idle was high. Check the slack in the throttle cable and took the throttle cable completely off the idle went down but then it chugged installed. Took the carb apart again and did a more thorough cleaning pulled diaphragm slides needles pilot jet everything I could think of the carbs spotless. We did the airbox check the throttle cable we ran it so it was no problem with the cable put it all back together and it still idles at 5 grand. Also check the sync bench check that and it seems fine.

So are you saying disconnecting the throttle cable reduced the idle to normal speed? Could you elaborate a little?