When you put it back together, put never seize on the threads! Bill Coleman
On Fri, Jun 6, 2025, 18:23 David Knecht via CnC-List <cnc-list@cnc-list.com> wrote: > Definite mixing elbow problem. I got the hose off the exit side and > virtually nothing coming out. Now to remove it. Two nuts came off easily. > Of course last one wont budge. Hoping pb blaster does its thing. Dave > > Sent from my iPhone > > > On Jun 6, 2025, at 6:05 PM, Richard Arper <rtar...@wavecable.com> wrote: > > > > First of all, I'm a Yanmar guy, so don't know the ins and outs of > Atomic 4's. > > This all started with a lack of water at the exhaust, correct? > > Now we have established raw water flow to the mixing elbo. > > If the amount coming out the exhaust is not normal, then perhaps some > clogging inside the mixing elbo. > > This is common with Yanmar. > > If the raw water can't flow, it can't cool the engine. > > > > If the amount coming out the exhaust is normal, then maybe a fresh water > cooling system problem. > > You stated that the heat exchanger was cool, but maybe this is the raw > water temperature and not the engine temperature? > > How hot did the engine get? Did it warm up faster than normal? > > This could be the fresh water pump or the thermostat, or some other > fresh water circulation problem. > > > > Richard Arper > > rtar...@wavecable.com > > > > -----Original Message----- > > From: David Knecht via CnC-List [mailto:cnc-list@cnc-list.com] > > Sent: Friday, June 6, 2025 1:49 PM > > To: Stus-List > > Cc: David Knecht > > Subject: Stus-List Re: Water pump mystery > > > > Some progress to report. One step forward. One step back. I checked the > strainer last night and all good. Reassembled hoses and found no water > coming out of pump inlet hose at pump height but dropping it to bilge > height got good flow. I could hear lots of air being pushed out and then > just water. Hooked everything up and pulled hose where raw water enters > mixing elbow. Started engine and got a gallon in there time it took me to > get from key switch to engine compartment. Looked good. Started engine and > seemed i was getting some water out back and pump housing stayed cool. But > engine temp started to rise in a few minutes so i shut it down. Hoses and > heat exchanger seemed cool. I know the antifreeze tanks are full. Why is > antifreeze not cooling engine now? I am thinking about taking the mixing > elbow off since it is the only thing i haven’t looked at. If that were > partially blocked what would the engine do? Dave > > > > Sent from my iPhone > > 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. > 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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