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techtalk:ih:engctl01a [2018/09/19 12:19] hippysmack [Setting /Adjusting Ignition Timing] |
techtalk:ih:engctl01a [2019/01/09 02:49] ixl2relax ↷ Links adapted because of a move operation |
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| * One cylinder on compression stroke, firing the combustion gas creating the power stroke. | * One cylinder on compression stroke, firing the combustion gas creating the power stroke. | ||
| * The other cylinder through the exhaust stroke (wasted spark). | * The other cylinder through the exhaust stroke (wasted spark). | ||
| + | * The non-firing plug will run at the same temperature as the firing plug as long as they're all the same heat range. ((rivethog of the XLFORUM http://xlforum.net/forums/showthread.php?t=1916320&page=4)) | ||
| + | * If the firing plugs aren't building up carbon, the "spares" shouldn't either. | ||
| + | * A spark plug's running temperature/heat range isn't correlated to being connected to the coil. | ||
| * Timing is advanced or retarded by manually rotating the circuit breaker base in relation to the breaker cam. | * Timing is advanced or retarded by manually rotating the circuit breaker base in relation to the breaker cam. | ||
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| ==== Timing Adjustment ==== | ==== Timing Adjustment ==== | ||
| - | * First, set the front cylinder on the compression stroke. \\ You [[techtalk:ref:trouble05#find_tdc_compression_using_the_rocker_arms_as_a_visual|can watch for both front push rods to become bottomed out]] ((doodah man of the XLFORUM http://xlforum.net/forums/showthread.php?t=2071019&highlight=circuit+breaker)) (collapse the push rod tubes to see the push rod action) \\ See also [[techtalk:ref:trouble05#find_compression_using_the_finger_method|Using the finger method to find the compression stroke]] and [[techtalk:ref:trouble05#find_compression_using_a_tdc_whistle|Using a TDC Whistle to find the compression stroke]]. | + | * First, set the front cylinder on the compression stroke. \\ You [[techtalk:ref:svcproc22#find_tdc_compression_using_the_rocker_arms_as_a_visual|can watch for both front push rods to become bottomed out]] ((doodah man of the XLFORUM http://xlforum.net/forums/showthread.php?t=2071019&highlight=circuit+breaker)) (collapse the push rod tubes to see the push rod action) \\ See also [[techtalk:ref:svcproc22#find_compression_using_the_finger_method|Using the finger method to find the compression stroke]] and [[techtalk:ref:svcproc22#find_compression_using_a_tdc_whistle|Using a TDC Whistle to find the compression stroke]]. |
| * Next, remove timing hole plug from the left crankcase. \\ Put the front cylinder advance timing mark in the center of the hole while still on the compression stroke. | * Next, remove timing hole plug from the left crankcase. \\ Put the front cylinder advance timing mark in the center of the hole while still on the compression stroke. | ||
| * This sets the front piston at 40° before Top Dead Center (TDC) on the compression stroke. \\ (where the spark occurs when the engine is revving at high revs, with the auto advance unit at full advance). | * This sets the front piston at 40° before Top Dead Center (TDC) on the compression stroke. \\ (where the spark occurs when the engine is revving at high revs, with the auto advance unit at full advance). | ||
