CARBS...I give up

Contrary to the EXPERTS. ROUGH idleing is a fuel problemo. {Intake loss} or not enough fuel getting to the bowl to keep up with consumption yo the intake. Ill get hanged by what IM saying but after years of working on various equiptment Im sure of what Im saying.

I was using a paper filter element...switched to screen and my problem pretty much went away...noticed you are up north gotta be worse up there. Take out the fuel filter for a test run and see. It wouldn't hurt if you posted pictures of your carb including everywhere the cable runs.

George your a Berryman adda fuel too make it better believer right? recent thread...I disagree.

I can attest to this, most Japanese manufacturers of engines with lawn applications do extensive studies as to what constitutes problemic perforformance of the "model # and where its sold" carburation difficulties and performomance issues.

As of now, 11/5/09 the japanese are world leaders in engine technololgy, surpassing BMW AND MERCREDES.

New Lexus US is almost as balanced as a hand made rolls at 40% of the cost.

Is there anything I can do to get rid of the crusty buildup in the dome of the combustion chamber? It is only building up on the front half where the fuel sprays in and hits.

YES there is, stop using 5 year old gas!......I respect you G but its the truth!

or lean it out. i had the same build-up. then i figured out where my engine liked to run. spark plug gap, higher octane, correct fuel mixture, needle setting...

play with it. you'll know when it's right.

"Lowered the needle slide one notch down". Do you mean you moved the C clip one notch up? This would aggravate your problem. I think it's an air leak.

Some of these carbs come with an idle screw that isn't long enough, no matter how far you turn it in, it won't idle.

Youi said the engine either races or dies, that's an air leak.

Also, putting silicone on your head gasket is bad news.

I would remove that and replace the head gasket with no sealer of any kind. A leaking head gasket will generally show itself as a mess on the engine, and loss of power, not as the symptoms you've described. A leaking base gasket will act the same as an air leak, partly because it is.

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If it ain't broke, and you mess with it long enough, it will be.