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Antique Gas Engine Discussion

fairbanks 3 hp Z not running help

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Old 06-13-2005, 09:19:46 AM
Havvey Havvey is offline
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Default fairbanks 3 hp Z not running help

i have a throttle govern Z very very hard to start seems to have good fire. problem appears to be carb timing or low compression when it runs its very good. how do i trouble shoot would some of you guys hepl? email me thanks.
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Old 06-13-2005, 09:56:19 AM
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Elden DuRand Elden DuRand is offline
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Default Re: fairbanks 3 hp Z not running help

Probably a sticky intake valve stem or burned valve.

Oil the intake valve stem and work it a few times with your finger. It should move freely.

While cranking slowly, gently hold the intake valve stem back. If you have higher compression when holding it back, you probably have a weak spring.

Take care - Elden
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Old 06-13-2005, 04:03:56 PM
Andrew Mackey Andrew Mackey is offline
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Exclamation Re: fairbanks 3 hp Z not running help

Also check the flutter valve at the inlet to the carb. It should cover the inlet completely, and burp a bit when running. it too has a spring behind it, and that spring rusts off too. If you dont hear it, or see it close - check it out. If it does not close, the engine will run too lean at low load, and flood when the throttle is opened
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