Inconsistant spark during crank. 50% of the time i have spark at crank, fires right up and runs good for as long as i want. Other times just cranks and cranks. I have to stop for a second and recrank two or three times - then spark. Using tach reference, everything looks good. Consistant crank signal (vr with 10k resistor), cam sync on rising edge. When i have no spark, there is no rpm signal. I've datalogged and used tachref a few times but don't see anything unusual.
Any suggestions? I've seen a few posts with the same problem mentioned but no definitive answers.
Sometimes spark, sometimes not
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Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.