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Showing results for tags 'ignition timing delay'.
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Hi, G4+Storm running a Nissan VH45DE(+T). Engine has been running on a rough initial starting, warm up and idling tune only. Went to recheck the trigger calibration with a timing light while idling at normal temp and found the engine running slightly advanced by approximately 3 degrees from my initial calibration set up. However when putting the engine in "set base timing" mode another timing light check shows the timing marks (15 degrees BTDC) spot on again?? My first question is do I just leave the offset setting as is when in "set base timing" mode and ignore the obvious timing mark misalignment under normal conditions or the opposite? I've found I can get the marks aligned reliably under normal conditions by factoring in the 3 degrees when in "set base timing mode". Second question related to this is the ignition timing delay setting. Again, when locked, no movement between timing marks but in normal running mode it moves with throttle input regardless of the delay setting entered. I'm using the OEM Nissan CAS fitted with a 24 tooth disc, have had no problems with the triggers since being set up with the engine running fine apart from this discrepancy since. Am I missing something? Cheers, Pete. vh45det1.pclr