On a cross country flight this week in my RV6A, I noticed my manifold pressure was down to 15 in, but I was still flying at cruise speed. I added full throttle and it resulted in no increase in mp. It had been fine on my departure. When I returned it was fine on take-off, but leaked down again after 20 minutes. I've recently replace the transducer. This is Van's guage. Any thoughts on where I should look. I've already checked the lines at the connnections. This is an O-320 D1A.
Jerry
N331RA
Jerry
N331RA