Hi All, First time on this forum so appreciate any help i can get.
I have just installed a new merc. 350 mag engine in my 275 bayliner 07 model. All runs fine except i get the two beeps every minute alarm coming on every time i run it. When the merc mechanics scan it it shows a knock sensor code. I have replaced the knock sensor and it still does it.. I have removed the knock sensor from the engine and straped it to a rubber hose and it still goes off so there is no way that it is actually sensing a "knock". We are all convinced the engine is not actually knocking as we have fitted a manual knock box and can't hear anything unusual. The strange thing is that the alarm (2 beeps/min) goes off at exactly the same RPM. It is activated at exactly 3300 RPM every time i run the boat. If i push it out to 4200 RPM the continuous alarm will sound
Any thoughts on this would be most appreciated..
I have just installed a new merc. 350 mag engine in my 275 bayliner 07 model. All runs fine except i get the two beeps every minute alarm coming on every time i run it. When the merc mechanics scan it it shows a knock sensor code. I have replaced the knock sensor and it still does it.. I have removed the knock sensor from the engine and straped it to a rubber hose and it still goes off so there is no way that it is actually sensing a "knock". We are all convinced the engine is not actually knocking as we have fitted a manual knock box and can't hear anything unusual. The strange thing is that the alarm (2 beeps/min) goes off at exactly the same RPM. It is activated at exactly 3300 RPM every time i run the boat. If i push it out to 4200 RPM the continuous alarm will sound
Any thoughts on this would be most appreciated..