News:

This forum is run by RPM and donations from members.

It is the donations of the members that help offset the operating cost of the forum. The secondary benefit of being a contributing member is the ability to save big during RPM Holiday sales. For more information please check out this link: Membership has its privileges 

Thank you for your support of the all mighty FJ.

Main Menu

Almost there........

Started by Riolongo, May 23, 2013, 10:02:35 PM

Previous topic - Next topic

Riolongo

Okay, so I've cleaned the carbs, replaced idle jets, new plugs, new fuel and air filter, cleaned gas tank, synced carbs and still have one small issue.  When I snap the throttle there is a slight bog.  When I checked the carb sync all four carbs were fine, between 8-10 Hg, the carb idle is set at 1000 rpm, carb #1 has the mixture screw out 2 turns, #2 is out 3 turns, #3 is out 3 turns and #4 is out 2 1/2 turns. Also, for reference when I changed the plugs all the old plugs were a light brown or tan in color, I believe that tells me the bike was running okay, not lean or rich, but not 100% sure.

Any suggestions or helpful hints?

Thanks,

Mike

Dads_FJ

turn your idle up a bit (1200/1500).  Then maybe also turn the mixture screws out a quarter to half turn.
John S.

'84 Yamaha FJ1100
'89 Yamaha FJ1200
'92 Yamaha TDM850
'80 BMW R100S/Sidecar
'81 Yamaha IT250(H)
'77 Yamaha IT175(D)
'39 BSA WM20

Riolongo

Okay, so I turned #3 & #4 in 1/4 of a turn and that seemed to do the trick, idle is steady at 1000 and throttle response is much better.  Looks good for now, I'll ride a few miles and make further adjustments if needed.

Mike