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Old 11-07-2009, 12:51 AM   #1
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Questions?? SH .21 engine tuning issue!

Hi

i have a sh .21 engine in my truggy. I have got it started but when i go to take off it bogs down and sometime stalls but if it gets over the bog it hits high revs great.

how do i solve this problem all answers would be great.

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Old 11-07-2009, 12:54 AM   #2
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sounds like a rich LSN, turn the LSN clockwise in one hour increments till its got a crisp take off and still has good smoke
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Old 11-07-2009, 02:03 AM   #3
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Originally Posted by NRGman View Post
sounds like a rich LSN, turn the LSN clockwise in one hour increments till its got a crisp take off and still has good smoke
ok i will try that. when i turn the LSN it semms to affect the idle do i just set the idle needle at the same time?

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Old 11-07-2009, 03:15 AM   #4
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i normally tune the HSN and the LSN before i re-set the idle
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Old 11-07-2009, 04:03 AM   #5
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Typically when you lean out the bottom end it is going to raise the idle on the engine. You will have to turn down the idle. And if you fatten the bottom end you need to turn up the idle.
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