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Oil Field Engines & Related Equipment

Bovaird Seyfang 40 HP

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Old 06-25-2013, 08:36:20 AM
Tom Poole Tom Poole is offline
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Default Bovaird Seyfang 40 HP

Hello All
I have a 40HP Bovaird Seyfang. I am having a little trouble fine tuneing it. It miss fires quite a bit. Any help is appreciated.
Thanks Tom

Last edited by Tom Poole; 06-25-2013 at 08:47:59 AM. Reason: Miss Spelled word
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Old 06-25-2013, 11:23:32 AM
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Fred Van Hook Fred Van Hook is offline
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Photo Re: Bovaird Seyfang 40 HP

If it back fires every once in a while the timing need advanced just a little. Doesn't need a lot of fuel and restrict the air to very little. If yours has the intake box on top close the gate to less than a 1/4 inch. If you can put it under a load they run great.. Here is a movie of the one I used to have..

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Engine movies can be seen at: pileofiron
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