257 wally,am I too lean????
01-23-2007, 09:02 PM
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257 wally,am I too lean????
Somebody confirm my thoughts.
When I punch the boat it dies, when I slowly advance the throttle it transitions to the high-side fine. Am I too lean on the low??Or too fat??I think I am too lean??.
Thanks,
Jimbo
When I punch the boat it dies, when I slowly advance the throttle it transitions to the high-side fine. Am I too lean on the low??Or too fat??I think I am too lean??.
Thanks,
Jimbo
01-23-2007, 09:44 PM
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RE: 257 wally,am I too lean????
Jimbo,there's an old saying; rich runs...lean dies. The 257 needs a rich low needle. Starting #s would be 2 1/2 low, 7/8 to 1 high. And then fine tune from there. For the high needle, keep an eye on the plug color after running some hard laps ( no idleing time ), needs to be toasty brown.
01-23-2007, 11:31 PM
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RE: 257 wally,am I too lean????
Thanks Slow.
I figured I was too lean, I'm at about 1-3/4 low. I read the plug after a plug-chop , and the high is good. The bog kinda confused me, but makes sense.
Jimbo
I figured I was too lean, I'm at about 1-3/4 low. I read the plug after a plug-chop , and the high is good. The bog kinda confused me, but makes sense.
Jimbo
