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Old 07-16-2011, 11:02 PM
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fuel question...

ok so i bought a crate engine a little over a year ago and ive been driving it around since. i noticed that i was running WAY too rich and decided to rejet the carb one size leaner on the primaries. it still felt like i was getting too much fuel into the carb and to make sure i put a pressure gauge on the thing and i was getting roughly 6.5-8psi. the manuel for the carb said not too exceed 6.5psi. i then decided to install a regulator. it's definitely not running rich but sometimes falls on its face in the low rpm range. now i was wondering, since i installed that regulator, do i rejet the carb to how it was?

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Old 07-18-2011, 09:33 AM
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Old 07-18-2011, 08:27 PM
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Quote:
Originally Posted by Camaro820
sometimes falls on its face in the low rpm range. now i was wondering, since i installed that regulator, do i rejet the carb to how it was?
You say low rpm range as in a corner, quick stop? check the float adjustment. If the rejet cleaned up the rich condition I'd leave that alone for now and watch the plugs for a bit.
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Old 07-19-2011, 04:50 AM
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1.21 giga-watts???!!!!
 
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You would be wise to get a tuning book that deals with your make of carb so you can dial it in. It would be money well spent.
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Old 07-22-2011, 11:28 AM
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turns out, it was the regulator that failed and wasnt letting gas get to the carb. and when i checked the part number on the fuel pump, it was a 8psi pump. carb only requires no more than 6.5. so i ended up buying the pump that compliments the carb and now she runs great. im still new at this stuff, so a tuning book is a great idea. i didnt even know they had tuning books but i will look into one. thanks guys!
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Old 07-22-2011, 06:39 PM
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1.21 giga-watts???!!!!
 
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You won't regret it.
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