Hi Douglas- I thought about replacing the studs as one is likely thread damaged, but I have no idea how to do that. They are supposed to be threaded into the manifold. Any suggestions? Dave
David Knecht S/V Aries 1990 C&C 34+ New London, CT  > On Jun 22, 2025, at 8:48 PM, Doug Mountjoy via CnC-List > <cnc-list@cnc-list.com> wrote: > > But a quality nut splitter, you'll be glad you did. Also, replace the studs > once you get the elbow off. > > Douglas Mountjoy > 1988 C&C LF 39 > Mexico at large > Transpacific 37 > POYC > Port Orchard, WA > > > On Sun, Jun 22, 2025, 14:55 David Knecht via CnC-List <cnc-list@cnc-list.com > <mailto:cnc-list@cnc-list.com>> wrote: >> Thanks Richard for the Nut Splitter suggestion. That is not a tool I have >> ever heard of, but I intend to give it a try and see if it works. >> >> I am stuck again on this project and really need more of the excellent input >> I have gotten previously. I got the exhaust riser off and was able to order >> a new one. It arrived yesterday and I attempted to compare its function to >> the old one. I can't convince myself that the old one is the source of the >> problem. If I run water from the sink faucet into the input port where the >> raw water would enter, water comes out the back (where it would go to the >> muffler) in both the new and old exhaust riser. I can't see an obvious >> difference in flow rate between the two. Is there a better test or is this >> not meaningful? Obviously, I am going to install the new one, but I am >> unconvinced it is going to fix the problem. The only thing left in the >> system is the muffler. I have not heard of anyone replacing this due to >> blockage. I thought that tended to occur at the exhaust riser instead, but >> I have found online discussions of a blocked muffler possibility. But most >> of the people I see replacing their mufflers are stainless steel ones where >> they begin leaking. That is not my problem. I checked all the hoses >> rearward of the muffler and all look good, so it seems my problem is either >> the riser or the muffler. Are there any diagnostics I should do or just go >> ahead and replace the muffler at the same time as the rest is apart and >> pray. Thanks- Dave >> >> David Knecht >> S/V Aries >> 1990 C&C 34+ >> New London, CT >> >> <pastedGraphic.tiff> >> Your contributions help pay the fees associated with this list and help to >> keep it active. Please help by making a small contribution using PayPal at: >> https://www.paypal.com/paypalme/stumurray All contributions are greatly >> appreciated. > <pastedGraphic.tiff><pastedGraphic.tiff>Your contributions help pay the fees > associated with this list and help to keep it active. Please help by making > a small contribution using PayPal at: > https://www.paypal.com/paypalme/stumurray All contributions are greatly > appreciated.
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