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Author Topic: #1 carb choo choo  (Read 992 times)

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Offline donny

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#1 carb choo choo
« on: May 29, 2008, 01:25:45 PM »
what is causing the carb to "choo' out the air side?   missed spark?
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2007 Husqvarna self propelled lawn mower    1976F    1971K    1974K      1990 FXRS-SP

Offline donny

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Re: #1 carb choo choo
« Reply #1 on: May 29, 2008, 01:43:48 PM »
okay...it is more of a "chit"..........."chit"  sound ?
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2007 Husqvarna self propelled lawn mower    1976F    1971K    1974K      1990 FXRS-SP

Offline 750K2

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Re: #1 carb choo choo
« Reply #2 on: May 29, 2008, 01:49:20 PM »
the intake valve might be hanging open.  have you checked your valve rocker clearances lately?
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Offline donny

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Re: #1 carb choo choo
« Reply #3 on: May 29, 2008, 04:20:13 PM »
damn good call ;D   , I only checked the one valve, it was off, regapped it and the noise was gone. . .  I set the valves last summer, but I guess..whatever.
now there is a little tick, but tomorrow I will re set them all.
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2007 Husqvarna self propelled lawn mower    1976F    1971K    1974K      1990 FXRS-SP

Offline 750K2

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Re: #1 carb choo choo
« Reply #4 on: May 30, 2008, 07:51:17 AM »
there's a guy on here named hondaman who recommends adding 0.001" to both the gaps of the intake and exhaust clearances for the purpose of longevity.  they do make a bit more noise but apparently the added gap means the valve stems last longer.  he knows his stuff.   i found that thread after i set my gaps this spring but will do it next time around.  good luck!
frank
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