dosnt want to go over 3000 rpm

If it's broken or just needs tweaked

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oferbr
Posts: 11
Joined: Sun Dec 25, 2016 10:13 am

dosnt want to go over 3000 rpm

Postby oferbr » Sat Jan 21, 2017 5:30 am

Hi all, I am new here just bought a 1982 cb650. the motorcyle dosen't go over 3000 rpm. When I accelerate it starts to lose power when it gets to 3000 rpm and it starts to backfire. I cleened the carburators and checked the float height. But still no cahnge.
can you please help- what should I do?
Thanks

cb650
Posts: 2959
Joined: Fri Mar 03, 2006 7:20 am
Location: Denver CO USA
Contact:

Re: dosnt want to go over 3000 rpm

Postby cb650 » Sat Jan 21, 2017 5:40 pm

fuel supply air supply and the gap of the pulse generators are other things to look into.
Did you clean the tank out?!?!?!?!

oferbr
Posts: 11
Joined: Sun Dec 25, 2016 10:13 am

Re: dosnt want to go over 3000 rpm

Postby oferbr » Sun Jan 22, 2017 5:38 am

I did not clean the gas tank. I instaled a new gas filter. The gas tank looks ok no rust inside.
fuel supply and air supply all looks good.
I will check the gap of the pulse generators and report back.
Thanks
Ofer

cb650
Posts: 2959
Joined: Fri Mar 03, 2006 7:20 am
Location: Denver CO USA
Contact:

Re: dosnt want to go over 3000 rpm

Postby cb650 » Sun Jan 22, 2017 5:46 am

also does it still have the vacuum shut off?
Did you clean the tank out?!?!?!?!

cb650
Posts: 2959
Joined: Fri Mar 03, 2006 7:20 am
Location: Denver CO USA
Contact:

Re: dosnt want to go over 3000 rpm

Postby cb650 » Sun Jan 22, 2017 5:47 am

also would clean the tank out. Even if just to get the old gas and any water out.
Did you clean the tank out?!?!?!?!


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