noticed the last few times, and maybe it always did this.
While running slow and pushing alot of water, around 1800 too 2400 rpms.
Never does it on plane.
I can hear a slight very soft occasional exhuast pop noise. Motor runs fine, but just an odd sound. Like maybe the exhasut is loaded up and pops. Very soft noise.
I am kinda **bleep** about suonds, sorry guys.
thanks for any help
At 1800 to 2400 rpm your engine may be in the transition stage where it is changing between the lean-burn mode and the regular-combustion mode. That may add some roughness or noisiness in the range.
A good dealer may be able to adjust the TPS calibration one way or another to minimize the feeling and sound. It also depends on how the motor is propped as overpropping puts a heavier load on the motor.
What is your top speed, top rpm with a normal load, and what prop size and boat do you have?
I did notice tonight it seemed too be a little louder than normal.
I did a bunch of hard accderlerations from stop too wot and ran at wot for a few min. every time.
After that it ran alot quiter and seemed even a little bit smoother.
Maybe just needed a little cleaning out.
05-29-2012 07:57 - edited 05-29-2012 08:01
You did not state the model and year of your E-TEC. What motor?
Also this was a major holiday weekend and most folks have the time off for the 3 day weekend.
05-29-2012 01:32 - edited 05-29-2012 01:33
ohhh crap...sorry. Me bad...LOL
Im in Canada, and work shift work. So i'm not sure what a long weekend is anymore or keep track of them...LOl
its a 2012 E150DBXIN
Not a problem, plus you being in Canada may not have been aware of our Memorial Day holiday weekend where we honor our military who did not return alive from war or conflict.
For your muted popping noise, like I mentioned before, have a good tech experiment with the TPS calibration adjustment to see if things improve if the situation is objectionable to you. Since it is in that combution mode transition rpm range, I doubt that it is anything to worry about, plus that is not an rpm that is used often due to the boat not being on plane yet and just plowing the water.