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09-11-2019, 08:18 AM #1Member
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- Mar 2016
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2016 Craz 400 Coolant consumption
In 2017, my second summer with the boat, I got an overheat warning on my boat. I shut her down and took her to the dealer. Solution was it was low on coolant. Dealer added a gallon or so! and told me he let it run for an hour and never saw a leak. So the past 2 summers I keep a close eye on the coolant level. It “consumes” about 1 cup every 2 weeks or so. Is this normal? If it’s anything like my automobiles I never need to add coolant. What are others experiencing?
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09-11-2019, 09:14 AM #2Member
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- Mar 2016
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Quick addition to my thread. Owners manual says “ Check engine coolant “DAILY”! Failure to maintain the coolant at proper level can cause engine damage..... Does this imply Inmar knows these engines consume coolant??
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09-11-2019, 10:13 AM #3
You shouldn't be losing that much coolant, there has to be a leak somewhere. Do you have a heater? I think that's a common place to have a leak, and it would leak there even if you're not running the heater, the coolant is always circulating through it, at least that's my understanding.
2016 Mojo surf edition
1100lbs rear w/ 475lbs piggyback mid/ center 700lbs/ 500lbs IBS/ 600 lbs lead
ACME 2315
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09-11-2019, 05:10 PM #4Member
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- Mar 2016
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Thanks for the suggestion! Looked at my heater box under seat on port side. 2 heater hoses enter the box and there was a puddle underneath. I’m going to tighten the clamps and see if that’s it. Unfortunately I already have the boat winterized so I can’t test it. Thanks again for the great idea!
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09-11-2019, 05:14 PM #5Senior Member
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http://www.instgram.com/jlyons30
2002 Moomba Mobius LSV - Sold
2006 Moomba Mobius LSV - Sold
2017 Moomba Craz - Enzos, Lead
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09-11-2019, 05:34 PM #6Member
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- Mar 2016
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09-11-2019, 05:37 PM #7
I had the same problem. Leak at the heater. Tightened the hose camp and it has been good all year.
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2018 Moomba Craz
6.2L Raptor 400
6 Pump Ballast, Autowake 2.0, Flow 2.0 Surf System
OJ 15x13 Wake Prop
Digital Cruise Pro 3 (paddle wheel)
Wetsounds Rev 10's
2005 Supra Launch 22SSV - Sold
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09-11-2019, 06:31 PM #8Senior Member
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- Aug 2011
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http://www.instgram.com/jlyons30
2002 Moomba Mobius LSV - Sold
2006 Moomba Mobius LSV - Sold
2017 Moomba Craz - Enzos, Lead
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09-11-2019, 07:18 PM #9Member
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- Mar 2016
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09-12-2019, 08:15 PM #10Member
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- Mar 2016
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Update on the coolant loss! I saw a puddle under the circulation pump for the heater, thanks to parrotthd for the tip. It’s mounted on the port side rear of the engine compartment. At first I thought it was the fittings and hose clamps which seemed loose. But after tightening and running the engine I saw a slow drip UNDER the pump. That’s where the impeller housing is so it looks like a pump failure. Dealer will warranty, BUT since it’s past 3 yrs. “parts only, no labor”. Well it’s a 15 minute job to replace so no big deal. As mentioned by Schwab the pump runs ALL the time, not just when the heater switch is turned on. I guess this is so you get instant heat. So this baby has been running for over 300 hrs. Just a caution to others to keep an eye on your coolant and if you are adding frequently....look here!