Will not rev from idle after tuning

If it's broken or just needs tweaked

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Jr102893
Posts: 8
Joined: Sat Aug 13, 2016 1:17 pm

Will not rev from idle after tuning

Postby Jr102893 » Mon Aug 29, 2016 3:23 pm

The bike ran just ok so I figured I'd check the timing and sync the carbs. The timing was good but when I adjusted the carbs the bike began to fail to rev. It idles great.

Note: Cylinders 1 and 2 smoke lightly and cylinder one backfires and does not heat as quickly when warming up from cold

Any help would be greatly appreciated
Thanks
JR

Jr102893
Posts: 8
Joined: Sat Aug 13, 2016 1:17 pm

Re: Will not rev from idle after tuning

Postby Jr102893 » Mon Aug 29, 2016 3:29 pm

I adjusted the carb boots potentially a vacuume leak ?

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tario
Posts: 166
Joined: Sat Mar 07, 2015 2:26 pm

Re: Will not rev from idle after tuning

Postby tario » Mon Aug 29, 2016 3:36 pm

Did you set the valves before you synced them? Also if you put in new spark plugs or anything like that I'd troubleshoot any changes you made. Could be a vacuum leak, you really have to crank the clamps down.
1979 cb650
1980 cb650

Jr102893
Posts: 8
Joined: Sat Aug 13, 2016 1:17 pm

Re: Will not rev from idle after tuning

Postby Jr102893 » Mon Aug 29, 2016 3:40 pm

I pushed the carbs forward because it wasn't fully on the engine boots it may have pulled it off the airbox boots. I'll check the valves when it coolstarts off and it has new sparker plugs but it was running on them before tuning


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