/ Exhaust Mod on my 3725 #41
- Nov 5, 2016
- Sierra Foothills, CA
- 2016 Branson 3520H
All good questions Slim. I think I was maybe jumping to conclusions. When I get back out there this weekend I'll be very methodical in checking everything including the air filter which I haven't cleaned out in a little while. I'll keep everyone updated on the progress and outcome.
After talking with you guys I was pretty sure I had jumped to conclusions about the DPF/DOC being the problem.
I started by pulling the air cleaner. It was quite dusty and it took a lot of compressed air from the air blow gun to clean it. I then went on to the inline water block fuel filter with the "clear" plastic housing.
I unthreaded it open and there was a lot of debris in it. Worse, there was a fair amount of water. Also there was some witish stuff on the ends of the pleated filter element where it meets the steel end caps. I couldn't tell if this is the adhesive they used in manufacture or some byproduct of a diesel and water reaction. I didn't have a backup element so I disassembled the filter and cleaned it by hand. I then dry fit it back together forming it into a cylinder and fitting the end caps on. There's a tension spring that sits at the bottom of the housing and seats the element back into an orifice. I will order backup air and fuel filters from Dave's this week.
After everything was put together I decided to take it down to the bottom of the property and back. I topped off the tank and after a fair bit of cranking she started up. It was about a 20 minute ride and I kept the rpms up, especially coming back uphill. It wasn't but 2 minutes into the ride that I knew I had fixed the problem.
I'll still probably gut the DPF/DOC but some other weekend. Thanks for all the help you guys.