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Thread: Engine tuning question - sputters at high RPM but plenty of smoke
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Old 04-04-2007, 06:06 AM
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Tabushi
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Originally Posted by sport10
The base settings for the 427 engine are:

High-Speed Needle- 2.5 turns out from bottom
Low-Speed Needle- 2.5 turns out from bottom

Reset the needles to this and see if your problem goes away. The high speed needle on this motor is touchy. It will go from too rich to too lean in a half a turn so make small adjustments.


Mhhh had same problem with my last STS .21 Team Engine ... and the problem was that i was using a too cold plug, try to go to a hotter one and retune the engine ... at least that resolved the problem for me ...

cya,
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