Agreed, run it without the filter as a test. ( a boat is one of the least dusty environments a diesel will see.). Not sure I’d be too concerned about getting a ‘high performance’ type for this use, I’d just re-foam the metal cone-thing. Weird you can’t find an OE filter, No problem for my 2gm. I assume you’ve verified that the fuel flow is unimpeded?
Good luck. Dave, 33–2. Sent from my iPad > On Oct 31, 2019, at 4:15 PM, Gary Nylander <gnylan...@atlanticbb.net> wrote: > > First thing I would try is just to remove the foam part of the air filter and > see if that makes a difference, just for a short trip. Even though you > cleaned it, there could be some collapse inside. > > Gary > > From: CnC-List <cnc-list-boun...@cnc-list.com> On Behalf Of Bruce Whitmore > via CnC-List > Sent: Thursday, October 31, 2019 3:30 PM > To: C&C List <cnc-list@cnc-list.com> > Cc: Bruce Whitmore <bwhitm...@sbcglobal.net> > Subject: Stus-List Air Filter Media, Yanmar 3JH2E > > Hello all, > > Some of you may remember a few weeks back I was inquiring about an apparent > lack of power on our 3JH2E. This was resulting in the engine, when in > forward, not getting up above 2,800 rpm when I used to be able to get up to > 3,200. > > Lots has been happening since then, as we figured out: > > A). We had a transmission problem (bearings spinning, trans slipping, etc.) > that required a rebuilt transmission. > B). I realized that my rather robust job of re-insulating the engine > compartment might be causing the engine to starve for air. > C). I removed a Panda generator in the port aft locker that was entirely > seized. That included removing and covering a very large air vent measuring > 11' x 7" in the side of the locker, meaning that if we were really pooped by > a large wave, the boat could ingest a big volume of water while the cockpit > drained. I subsequently heard you folks talk about engine blowers, which my > boat never had, and I overlooked. Had my boat included a blower, I would > have known not to entirely cover the vent. > D). The "intake silencer" noted in my Yanmar 3JH2E manual and which looked > mostly like a metal mesh/stainless cone with holes from the inside is > actually removable and has foam that is now clean. I got a reasonable amount > of crud out of it, but I don't want to say it was fully clogged. > > As we got this done, coincidentally the diver came by and cleaned the hull. > Here in the warm, shallow Tampa Bay area, we tend to grow stuff pretty > quickly in summer and fall, so the timing was perfect. Once we got all this > done we went out and motored and, with one of the engine side panels removed > to ensure good airflow (I've not yet addressed the vent where the generator > was as of yet), the engine will now go to 3,000 rpm in gear, but still not to > 3,200. It revs to 3,600 WOT at the dock in neutral. Fuel filters are good, > I don't think I have any air leaking into the lines. I'll seriously look for > black smoke under hard acceleration thought I have not noticed it in the > past. > > I want to start by eliminating the easy stuff. like improving airflow. I > tried to price out the filter with Yanmar, but they only sell the complete > silencer, metal casing and all for $132. Sigh. > > I can get green 65 PPI foam online, but there's always the quality issue with > Amazon. > > I can't seem to find an aftermarket K&N or other high performance filter > (which I would prefer instead of relying on foam). > > Once I'm 100% sure the airflow is not restricted, I'll make sure the > injectors are really clean, then move to timing & injector testing. etc. as > per your previous recommendations. > > What would you do about replacing the foam/filter? > > Thanks in advance, > > Bruce Whitmore > > > > > Bruce Whitmore > > (847) 404-5092 (mobile) > bwhitm...@sbcglobal.net
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
