idling on choke

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  • catbed
    #46
    i am numbering the cylinders right and i dont think the petcock is leaking because i got it new in october. the number 2 header gets hot after the bike runs for a bit.

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      • 49er
        Forum Sage
        Past Site Supporter
        • Jul 2006
        • 1517
        • Napier, New Zealand
        #47
        Originally posted by catbed
        i am numbering the cylinders right and i dont think the petcock is leaking because i got it new in october. the number 2 header gets hot after the bike runs for a bit.
        Great to hear it's running better. I still think that your #2 pilot circuit needs further investigation!!
        Have a Happy New Year.
        :) The road to hell is paved with good intentions......................................

        GS 850GN JE 894 10.5-1 pistons, Barnett Clutch, C-W 4-1, B-B MPD Ignition, Progressive suspension, Sport Demons. Sold
        GS 850GT JE 1023 11-1 pistons. Sold
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        GS1100GD, future resto project. Sold

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          • catbed
            #48
            i cleaned the pilot circuit again but it still doesnt fire right away. after it warms up for a bit, if i adjust the mixture screw for number 2 the idle speed moves with the screw. i cant find my compression checker right now, but once i get it registered, ill ride it to a mechanic and see if he can tune the mixture and check the compression. its been ridden for 8k miles so could the valves have worn that much?

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              • Guest
                #49
                Originally posted by catbed
                its been ridden for 8k miles so could the valves have worn that much?
                i doubt the the valves would go off after that milage to cause a major problem provided they had been correctly adjusted (so, yes, you do need to check them)
                check the compression and if nr 2 is a lot lower then the other cylinders that'd be a good indication of where your problem is

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                  • Guest
                    #50
                    actually, just remembred, i had the exact same problem with one of my bikes, where one cylinder would fire properly only with the engine warmed - it turned out to be a burnt valve

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                      • catbed
                        #51
                        just got a new compression checker and all of the cylinders are at about 145 psi. well except number 3 which doesnt have any. i was greeted by knocking when i tried to start and ticking when idling. its a stuck valve. now i have a better excuse to do a valve check.

                        would a burnt valve have compression?
                        Last edited by Guest; 01-01-2008, 08:03 PM.

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                          • Guest
                            #52
                            Originally posted by catbed
                            would a burnt valve have compression?
                            nope
                            i'm afraid it sound like it's time to take the head off

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                              • catbed
                                #53
                                i was talking about the #2 cylinder, so it doesnt have a burnt valve. the number 3 cylinder im 99 percent sure it has a stuck valve. im goin to take the valve cover off and check the clearances.

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