Abby’s Guide > Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) > Discussions > Honda HS928 Engine Surging Between Loads
Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions |
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mml4
 
Snow is good,
Deep snow is better!
Joined: Dec 30, 2003
Points: 544
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Re: Honda HS928 Engine Surging Between Loads
Reply #13 Feb 2, 2011 12:00 pm |
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The altitude kit is to perform the opposite. As altitude increases, it causes the mixture to run too rich thus the requirement for smaller jets at altitude to lean it out. An altitude kit would make the jetting worse in an already lean mixture. Here's an interesting link:
http://www.iwt.com.au/mikunicarb.htm
My bad- I had a Honda powered pressure washer I bought off the net that back fired badlly when new. It appears I completely misunderstood the vendors explanation when I called to complain.
Marc
SnapperV210P,Toro22177,TroyBilt42010Snowthrower,Craftsman Shredder,American Turbo Pressure Washer HondaGX200,Stihl011Saw,EchoPas260Trimmer Edger,EchoPB602Blower,EchoHCR150Hedge Clipper
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friiy
Location: Las Vegas, The Desert
Joined: Apr 11, 2008
Points: 600
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Re: Honda HS928 Engine Surging Between Loads
Reply #16 Feb 2, 2011 8:29 pm |
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Your low speed jet is plugged.... The engine is not getting enough fuel at that (governed ) throttle setting through the low speed jet... The engine starts to drop in rpm, the engine responds by opening the throttle to maintain rpm, the high speed or main jet comes on-line and overspeeds past the desired maintained speed since the unit is under no load, The engine trys to drop the rpm by closing the throttle some.... Then the cycle starts all over again... Find your low speed jet and clean it, it's only partly plugged.. Good Luck, Friiy |
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