Question about 1986 Honda GL 1200 Aspencade Gold Wing

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We had a reed valve leak which caused a problem with the idle. This was fixed by the mechanic, but, as he describes, the idle seems as though it is not running on all four cylinders, only on three. It runs find once under power and driving on the street. Any help?

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I drove a Goldwing home from a dealer that ran terribly. It was a $350 motorcycle, they just wanted gone. All it needed was four new spark plug caps , about $5 each. After 10 years I still drive it 600 miles to Sturgis,SD. Always try the cheap stuff first. Don't forget to put in new plugs at the same time.

Posted on Jul 28, 2010


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The Homelite 330 has a set of "reed valves" (thin fiberglass flaps held in a V shaped holder, narro end of the V point to the engine) in between the carburetor and the intake port of the cylinder.

Looke here,M1

then look at part #26 on page 218.

basically it does:

Airflow Reed Valve engine
----> >

Their function is to open slightly when the air is rushing through them toward the engine, and yet flap closed again to stop the backflow or air/fuel from going out of the cylinder. The sucking action of the engine lets the air slightly move the reed off of the small part of the "V" and the air flows in. As the airflow is reduced the mechanical tension of the reed, trying to remain flat and not bent, closes it.

Since they are flaps there is a momentary time then the air will rush out as they close. But you not should see "lots" of fuel coming out of the carburetor.

Two symptoms will cause excess fuel/air rushing out of the carb.
1. if they are old the reeds can be slightly warped and just not seal against the reed valve cage. That means replacing the reeds (if servicable) or the reed valve (cage and reeds together).
2. If any dirt or sawdust ever got into the engine, there could be some particles stuck between the reed valve and the cage. This is usually near the top of the reed valve and once it's in there, it can't get out. You can sometimes tage out the reed valve cage, remove the reeds and clean everything. The foam seal around the perimeter if the black top cover of the Homelite 330 usually breaks down over time and lets dirt/fine sawdust into the "Clean side" of the air system. You should see no dirt/sawdust or debrea around the carburetor.

In either event you would want to make sure that when you are lookin at the part that the reeds are perfectly seated on the reed valve cage. If not, you get the symptoms that you described.

Good luck!

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Hi , i have a 1995 Escort with 1.9 4 cyl engine , at cold start the engine revs ok but as it get warmer it start to idle rought and die , with a scantool the o2 sensor always reed lean at idle , after checking fuel pressure , air mass meter , EGR valve , and potential vacuum leak at intake and hoses , its the PCV valve that give me that problem , as i remove the pipe with the valve there was a whissle noise comming from it , when i block the valve at its tip the whissle noise stop the engine revs smooter and the o2 reads normal , i replace the PCV and its idling good .

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