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Author Topic: shooting ducks  (Read 1165 times)

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74550pa

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shooting ducks
« on: July 08, 2008, 02:12:44 PM »
my 74 cb550 has a problem I can't figure out. I reset the valves,checked the timing,and rebalanced the carbs. it runs great until I get into high gear,then it starts popping and has no power. I have no clue as to what is going on any help would be greatly appreciated
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martino1972

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Re: shooting ducks
« Reply #1 on: July 08, 2008, 02:32:19 PM »
when you get in higher gears or higher rpm's??
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Offline TwoTired

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Re: shooting ducks
« Reply #2 on: July 08, 2008, 04:28:35 PM »
air filter details?  New?
Spark plug deposit description?
Does the bike have all stock components?
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Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline TwoTired

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Re: shooting ducks
« Reply #3 on: July 08, 2008, 06:07:46 PM »
Raise the slide needles one notch.
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Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

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Re: shooting ducks
« Reply #4 on: July 08, 2008, 06:13:22 PM »
+1 on raising the needle clips.  You are running lean.  i had the same issue with my 750 k4.
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Offline Hush

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Re: shooting ducks
« Reply #5 on: July 08, 2008, 06:14:43 PM »
And check carb to head boots for leaks by spraying a little silicone on to them when bike is running to see if there is a change in idle revs.
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I think the thing I most like about motorcycling is the speed at which my brain must process information at to avoid the numb skulls who are eating pies, playing the ukulele, applying make-up etc in the comfort of their airconditioned armchairs as they make random attempts to kill me!!!!!!!

Offline DONZIE

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Re: shooting ducks
« Reply #6 on: July 08, 2008, 08:27:16 PM »
Check the vent on your gas cap
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Offline rbmgf7

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Re: shooting ducks
« Reply #7 on: July 09, 2008, 01:40:37 PM »
what do you mean by "popping"? when you throttle, does it hesitate and sound like it's sucking in a lot of air? you're probably still runnig lean. if you're running stock main jets with those pods, you may need to take it up a size or two.

and what do you mean by your plugs have a lot of color to them? are they white, tan, or black? flat black or gloss black?

and what's so hard about shooting ducks? maybe you need to work on your spread, lol.
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