Re: 2007--250xs???? (steveschrank)
Do you know if they ran an "Auto Self Test- Plugs OUT of Cylinder Head" while on the Computer Diagnostic System?
If not, I would ask them to run this test a couple of times (COLD and HOT), while monitoring SPARK on a spark tester.
Of course, there are many other potential causes.... but this would be a good starting point.
PRINTOUTS of the RUN HISTORY and FREEZE FRAME (Fault) History might also contain helpful information and data (not always readily apparent.... sometimes the "devil is in the data details"). http://www.bassboatcentral.com/smileys/wink.gif
One more simple item that can cause INTERMITTENT performance problems:
http://www.bbcboards.net/zerot...first