76 honda 360
when i rev it up, it stays there for while(10sec) and it comes down to idle.
cable comes back right away
If I rev it up to 5000 , it idles at about 3-4000 for 10sec and comes down to 1200 idle.
Left Spark plug looks wet with fuel
There is popping sound every 5-10 sec with white smoke.
I just rebuild the carb and float was moving how it suppose to.
I turn 1 1/2 on fuel mixture on both carb. Tried 1 turn out but still same.
What else can it be?
thanks guardrail. But it is running better just...having more problem after another....
Thank you
jun
2007-01-24 08:48:32 · 5 answers · asked by junheo01 1 in Cars & Transportation ➔ Motorcycles
You are getting too much fuel through the left carburator. The excess burning off is what's keeping the rpm up. Float moving is good, but float height setting is what's important.
When synchronizing the carburators, the left is adjusted first, and the right is set to match it.
I give up!
2007-01-24 10:25:54 · answer #1 · answered by Firecracker . 7 · 0⤊ 0⤋
Back in the 70s there were alot of motors with a device that didn't let the rpm come down rapidly, it brought it down gradually. The thinking was that it would eliminate operator error when changing gears) you wouldn't get a jerky gear shift from dropping the throttle suddenly.
Like everything mechanical, this little doohickey evidently got a hitch in it's giddy-up.
Since I never had a Honda 360, I don't have a mental picture of what you're looking at. If I had the bike, I'd eliminate the part altogether, but the engine/carb may be so ill mannered it actually needs that little part to run halfway decent.
I solved all my problems by buying a BMW motorcycle.
Good luck with your big red.
.
2007-01-24 08:57:36 · answer #2 · answered by s2scrm 5 · 0⤊ 1⤋
Gaurd rail is correct on this. You for sure have a leak. If I was you I would look at the base of the carbs that you had off.You may not have them set correctly (installed tight,cracked gasket,etc.) and now are sucking to much air which is causing this up hang in the idle and the back fire.
2007-01-24 10:41:47 · answer #3 · answered by vmaxer85 4 · 0⤊ 0⤋
Intake manifold air leak. Either the manifolds are cracked or the gaskets are leaking. When the bike is reving, spray all around the manifolds with wd-40. If they are leaking, it will seal the holes temporarily and bring the idle down. That's a test to find a leak.
2007-01-24 10:32:40 · answer #4 · answered by guardrailjim 7 · 0⤊ 0⤋
It might be the slide in your carb is sticking. If a multi carb bike, the non-sticking carb(s) will return the throttle cable.
If so, you'll need to polish/smooth the slide/bore of your carb so it doesn't stick.
2007-01-24 21:23:49 · answer #5 · answered by strech 7 · 0⤊ 1⤋