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Raw Water Intake
gack
Member Posts: 315 ✭✭✭
Just had my Kohler 5E serviced to the tune of $1800 (fuel pump, PWB, impeller) and was told it will run great now but needs to be hauled and raw water intake cleared of a clog, so scheduled a date for this. I was at the dock yesterday and ran the AC off shore power which ran fine for a half hour then gave me the dreaded HPF code. I haven't had a chance to check/clean the strainer yet, but wondering if these 2 issues could be related. Meaning does the intake for the generator and AC share the same line?
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davidbrooks
Member Posts: 1,342 ✭✭✭✭
That would be highly doubtful. On my 342 the raw water intake is right there in the engine compartment for the Generator. AC intake is mid ship near the toilet intake. All three are separate. It is likely that you just have a lot of stuff in the water that clogged them both. My AC clogs all the time at the dock. I simply pull the line where the water exits the AC from under the berth and give it a healthy puff to clear the line. I have a feeling if i put on a new water pump or larger strainer i wouldnt have this issue. Too many projects not enough $$.It's 5 O'Clock Somewhere! -
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Dream_Inn
Member, Moderator Posts: 7,556 mod
yes, it should be very close to the strainer. You can also try loosening the 4 screws around the pump (with seacock open). As you slowly loosen them, you will begin to hear a hiss, that is the air coming out of the line. When you begin seeing water, tighten them back up. Just don't over tighten (they will strip out).Dream 'Inn III -- 2008 400 Express
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2002 FV 342 on Lake St. Clair - Past Commodore SHC - Vessel Examiner USCGAUX
Dream 'Inn III -- 2008 400 Express
Cut in a tee after the filter and before the pump. On the bull side of the tee add a hose bib to hook a garden hose to. When at the dock, ac or genny off, close the raw water in take valve. Hook the hose up to the newly installed tee. Turn the garden hose on and run the unit. The water pressure from the garden hose, usually 60psi+, will usually clean out the entire line. If you have someone watch it will amaze you how much crap and mud come out.
After a minute or two shut off the engine and then the hose. Disconnect the hose and cap the tee. Open raw water valve and run as normal. I do This at least monthly. After hot days or after runny in shallow or muddy water I do This when I return To dock.
pump should be near the seacock valve. It definitely may need primed. Easiest way to prime, is make sure valve is open and go for a ride. You could also use a garden hose and squirt water thru the input (on outside of boat where it usually spits water out. Doing this, with the seacock open, will allow you to fill it and get rid of prime.
You should be able to hear the pump trying to prime (it will have a hiss sound). If you hear nothing from the pump, then you need to check power to the pump.
Dream 'Inn III -- 2008 400 Express