Bucket test

'The Works' toilet cleaner makes a good agent for cleaning out the manifolds if they are off the boat. All kinds of nasty crud came out of mine when I used that. Just plug the hose barb & pour it into the riser port. slosh it around & rinse after an hour.

+1. I like taking a look see inside. I have stored dry for 8 seasons now with no issues.

Manifolds and risers - if not cracked or completely choked with corrosion, you should be able to use them. see how much you can clean and flush out of them, as long as there's a clear path there's not much more to them.

Thermostat was rusted open. I decided this winter I'm going to replace a bunch of the cooling system. The water pump was definitely the problem...replaced. Now I have replaced the thermostat housing (upper and lower) and the elbow pipe. Everything is good now. Boat runs at 140 in the driveway--haven't put it in the water yet. Risers are cool to the touch after engine has warmed up. I'm happy with everything.

I've got manifolds and risers sitting in my garage. Will probably replace this spring, but may run the boat for a while first and see if there are any issues with them. The insides of my thermo housing were pretty corroded. Probably didn't have to replace, but glad I did. I'm guessing my manifolds look the same way.

Thanks for everyone's help. This is such a great forum.

peace out.

no. do you prefer the 143?

I guess it also could be temp gauge, but that's been fine up to now.

Hollywood wrote: Even during/after skiing you never went above 125? Now we have another problem!

Yes, you need to check out the T stat if there's even one on the engine?!!

installed new rwp today. Wallah. Not only is it sucking the bucket dry fast (about 30 seconds at 800rpm), I took it to the water and ran it and it never went above 125F. manifolds and risers were warm, but not hot at all.

Apparently when I re-tapped the bolt holes on this pump, it's been sucking air ever since. Only in the last year did I really notice the temp jump, but good grief, my risers have never been this cool (Of course I'm usually running in 90 degree water instead of today's 50 degrees, but still!).

Since we were out there, I pulled my 19 year old on a quick run. Nothing better than a January pull.

thanks guys.

correct 63. Not plumbed to engine...clear hose about 1 foot out of outlet from pump...not connected to thermostat housing. So manifold pressure was not an issue.

Jbear, you are definitely an old timer. However, since you can still barefoot, you are exempted from the title.

The Dude wrote: I love it when I'm not on here for several months, but one post gets responses from old timers like Gary, Tim, and Kevin.

Finally..not included in the 'old-timers'...altho I bet you did not mean age!
None-the-less...it is always cool to have a Dude sighting!



john

OK. Bucket test with clear hose on both intake and output. Running at idle the 5 gallons empty in 90 seconds. There are bubbles in the outflow, but they aren't consistent--some bubbles, then no bubbles, then bubbles again. I made new gasket on the pump side of the brass cover plate and feel confident in the Oring seal. It's just not pumping enough water.

I love it when I'm not on here for several months, but one post gets responses from old timers like Gary, Tim, and Kevin.

I may not get back to this until Sunday now (Irish playing tomorrow and I have to go to a frickin wedding). I did the bucket test with just the intake hose to the pump put directly in the bucket, but I haven't taken the outlet hose off for any test yet. Will do that like HW said and probably get clear hose to see if I can see bubbles.

And we still don't even know how exactly fast a good one empties a bucket...

Yeah, I'm usually on top though and then do like 19 edits.

Point being, you can do more free/cheap tests before paying $400 for a new pump. Swapping in a known good one is a always a great idea too.

Run a RWP intake hose straight into the bucket. Go buy some clear vinyl tubing for IN and OUT, this way you'll probably see bubbles coming out if the pump itself is sucking any.