2020 Scarab running through coolant

[Firechic78]

Hey there, so I searched all the forums but couldn’t really find anything so thought I would post. We have a brand new Scarab 255ID with less than 5 hrs on it and when we picked it up from dealer during my checks I noticed the coolant reservoir was low. Dealer made note of it said it prob wasn’t topped off, added fluid and we went on our way. Well today after an hr on the water opened engine comp again to check everything and reservoir was almost empty again. I check all the hoses, clamps and didn’t see coolant anywhere in engine compartment...wtf is going on? I took pictures and sent them to my dealer just to document everything real time. I really don’t want to regret my purchase especially after all the negative I’ve read on forum about Scarab. Thanks in advance for any help. I’m already planning on taking it in but if it’s something simple I would like to avoid that.

 

[Firechic78]

After some more research could it have just been an air bubble or needed to “burp” itself? Especially since I don’t have any coolant leaking in engine compartment?

 

[Dean P]

A burp is better than a fart! Sure would stink if you needed a new engine.

 

[Firechic78]

Exactly...lol. Going to refill and take it out for a short cruise and see what happens. Everything else is fine....well as far as I can tell.

 

[JetTech72]

If it's a brand new boat, it's most probably air pocket being filled in. If after a few ride you still have the same issue, then I would ask the dealer to do a pressure test of the engine cooling system.

 

[Firechic78]

Ok. Thanks. Taking it out today so we will see what happens.

 

[GrabACabCC]

So what happened?

 

[Firechic78]

Refilled it one more time and took it out for couple hours everything seems to be normal. Guess it just needed to “burp”.

 

[Seaboot]

What type of coolant is used in the Scarab Rotax engines?

 

[JetTech72]

Rotax recommend BRP 779150, but from what I have heard Scarab are using Standard Green coolant out of the factory. I would therefore use green if that's in your tank, or Prestone All Vehicles type

 

[Seaboot]

Rotax recommend BRP 779150, but from what I have heard Scarab are using Standard Green coolant out of the factory. I would therefore use green if that's in your tank, or Prestone All Vehicles type

Yes, green coolant is what is in the tanks. Thanks.

 

[LIZARD]

Everytime I changed my 2012 Sea-Doo Challenger 180 coolant (did it 7 times over 8 years) I needed to refill almost have the reservoir tank after the first time running it. There must be a trapped air pocket that doesn't get filled during the refill process. Make sure you pour the coolant in very slow to allow air to be displaced as much as possible.

 

[Ekun]

I have a 2016 Scarab 165 Ghost that is having a similar issue. It chews through coolant way too quickly. I've had to refill the coolant tank 3 times already this season while going from 30 up to 50 hours. It is definitely not a burp. My buddy who has a different Yamaha boat but the same engine says he hasn't had to replace the coolant once. No nearby Scarab dealer to take it to to get the coolant system pressure tested. Any other ideas of how to see where the coolant is going?

 

[Dean0]

I have a 2016 Scarab 165 Ghost that is having a similar issue. It chews through coolant way too quickly. I've had to refill the coolant tank 3 times already this season while going from 30 up to 50 hours. It is definitely not a burp. My buddy who has a different Yamaha boat but the same engine says he hasn't had to replace the coolant once. No nearby Scarab dealer to take it to to get the coolant system pressure tested. Any other ideas of how to see where the coolant is going?

I'm having the same problem with a 2017 195 HO. Did you ever figure out what was happening?

 

[Firechic78]

Yes. It was the water pump gasket. At least that’s what the dealer said. Seemed to have worked. No longer running through coolant. Hope this helps.