Author Topic: MY engine NEEDS 1500 RPM Idle Speed....Is this Bad?? (Read 4851 times)

Sandman9270 · « **on:** March 31, 2007, 05:32:40 PM »

So as long as I have had the bike, I noticed it idles rough below 1500. According to the manual, top normal is 1300rpms. I figured I would fix this when I adjusted the valves and synched the carbs but it still seems to need 1500....any ideas why this is? Anyone else have to idle this high?

If I do it any less the engine seems to stumble every 4-5 seoncds at idle. I am going to re-synch the engine as I rushed it a little bit (I don't have an Aux. tank so I just used the fuel that was in the carbs. But all columns were within 2 lines/marks of each other, I wouldn't think they would have to be PERFECT......

Bob Holland · « **Reply #1 on:** April 01, 2007, 05:32:19 PM »

Check for vacum leaks around carbs.

Sandman9270 · « **Reply #2 on:** April 02, 2007, 01:17:53 PM »

Will do, thanks!

pmackie · « **Reply #3 on:** April 03, 2007, 06:35:32 PM »

You could need a air screw adjustment. Have you drilled out the screws and checked the factory air screw setting? Many guys have found a LOT of variation in the factory setting.

solman · « **Reply #4 on:** April 18, 2007, 07:32:51 AM »

They don't have to be perfect, but they have to be very close. You may want to take a look at your plugs as well. On a side note, does it need it when it is cold or all of the time?

Daytona · « **Reply #5 on:** April 18, 2007, 09:44:34 AM »

Quote from: "Sandman9270"

So as long as I have had the bike, I noticed it idles rough below 1500. According to the manual, top normal is 1300rpms. I figured I would fix this when I adjusted the valves and synched the carbs but it still seems to need 1500....any ideas why this is? Anyone else have to idle this high?

If I do it any less the engine seems to stumble every 4-5 seoncds at idle. I am going to re-synch the engine as I rushed it a little bit (I don't have an Aux. tank so I just used the fuel that was in the carbs. But all columns were within 2 lines/marks of each other, I wouldn't think they would have to be PERFECT......