Recently got my boat back from my mechanic. He replaced my oil pressure gauge during the engine rebuild. I have taken it out 3-4 trips now and I have had some fluctuating oil pressure readings. Cruising speed around 3200-3800 rpm I have noticed my tach start jumping around at random times and then go back up to a consistent pressure. Slow down during the fluctuation and it goes back to a decent pressure and stays and even if I speed up it'll stay up and consistent.
I do have a stereo and my mechanic suggested going to a mechanical gauge with the thought of the stereo causing problems.
Any input would help.
Thanks, Dave
