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View Full Version : Mercury Tech 2001 240 HP EFI sounds like a diesel



Rider
07-04-2010, 04:27 PM
Idling it sounds good, I was adjusting timming and as I did, it stated knocking, litterally sounding like a diesel truck. Throttle position didn't change, just advance. As the timing is retarded, it gets worse. Right now, it is at 8 degress, at 10 it got worse. It is just starving of fuel, late detonation from timing, or something serious, the engine was rebuilt not long ago and I'm still trying to get it dialed in.

helios2001ve
07-04-2010, 06:34 PM
power pack!!!

Rider
07-05-2010, 01:59 PM
are you talking about the ignition control box that lists for over $250 bucks?