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**bcoastal** · 11-23-2020, 08:03 AM

Im asking this because I have a high temp alarm at high rpms. Thermostats are new and impeller is less than 200 hrs and less than 1 year... good pressure

Anyways. I noticed a bunch of green gunk when I replaced my thermostats. No salt build up. I flush with salt terminator every 2-3 times I run the boat but not running.

Anyone ever flush with soap?

**Sgrem** · 11-23-2020, 08:40 AM

Not sure what is going on with yours....

But I have never flushed a motor....ever. A dozen motors or so....no idea how many thousands of hours.

**Jkmoore03** · 11-23-2020, 08:48 AM

Quote:

Originally Posted by bcoastal

Im asking this because I have a high temp alarm at high rpms. Thermostats are new and impeller is less than 200 hrs and less than 1 year... good pressure

Anyways. I noticed a bunch of green gunk when I replaced my thermostats. No salt build up. I flush with salt terminator every 2-3 times I run the boat but not running.

Anyone ever flush with soap?

PM sent

**Jkmoore03** · 11-23-2020, 08:50 AM

Quote:

Originally Posted by Jkmoore03

Quote:

Originally Posted by bcoastal

Im asking this because I have a high temp alarm at high rpms. Thermostats are new and impeller is less than 200 hrs and less than 1 year... good pressure

Anyways. I noticed a bunch of green gunk when I replaced my thermostats. No salt build up. I flush with salt terminator every 2-3 times I run the boat but not running.

Anyone ever flush with soap?

PM sent

Disregard the PM. I’m just getting my first cup of coffee down and wasn’t fully awake when I read your post the first time. Totally different issue than I had.

**steverino** · 11-23-2020, 09:24 AM

If you use the motor in salt water you'll get a white build-up in the cooling system over time. My thermostat was encrusted with it. I was told about an acid flush (muriatic acid and water) used to remove it. Look online. Of course, just after I did the acid flush I blew the motor! Good luck!

**Rockfish2** · 11-23-2020, 10:12 AM

Quote:

Originally Posted by sgrem

Not sure what is going on with yours....

But I have never flushed a motor....ever. A dozen motors or so....no idea how many thousands of hours.

My understanding of salt water and chemistry is that if you constantly use your motor you don’t need to flush it, but that doing so won’t hurt it. If you unfortunately can only use your boat once a week, or less, on average, like many people, then flushing can help with salt buildup, etc. I’m guessing that’s why the manufacturers recommend flushing - they probably know many people don’t use their motors very often and of course don’t want them complaining about them breaking down. Again, just my understanding, I may be wrong.

**stumpgrinder3** · 11-23-2020, 10:27 AM

I dont flush them anymore.

**c hook** · 11-23-2020, 02:40 PM

do you change or check the oil in your vehicles??? asking for a friend

maybe Ronnie with redwing can chime in.

**Muddskipper** · 11-23-2020, 03:18 PM

What brand of motor?

**bcoastal** · 11-23-2020, 06:25 PM

Honda. I think I may have some other kind of issue. Really just curious if anyone ever flushes with soap to get green gunk out?

11-23-2020, 08:03 AM	#1
bcoastal Registered Users-pm+ Join Date: Aug 08 2012 Location: Galveston Posts: 446 Rep Power: 1108818	Flushing motor Im asking this because I have a high temp alarm at high rpms. Thermostats are new and impeller is less than 200 hrs and less than 1 year... good pressure Anyways. I noticed a bunch of green gunk when I replaced my thermostats. No salt build up. I flush with salt terminator every 2-3 times I run the boat but not running. Anyone ever flush with soap?

11-23-2020, 09:24 AM	#5
steverino Deadeye McGee Join Date: Mar 08 2006 Location: Somewhere between Rocksprings and Galveston Age: 71 Posts: 3,263 Rep Power: 21483568	Yamaha Four Stroke Cooling System If you use the motor in salt water you'll get a white build-up in the cooling system over time. My thermostat was encrusted with it. I was told about an acid flush (muriatic acid and water) used to remove it. Look online. Of course, just after I did the acid flush I blew the motor! Good luck!

11-23-2020, 02:40 PM	#8
c hook Registered Users-pm+ Join Date: Jul 06 2016 Location: Friendswood Tx Posts: 4,922 Rep Power: 21481454	?? do you change or check the oil in your vehicles??? asking for a friend maybe Ronnie with redwing can chime in.

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11-23-2020, 08:40 AM	#2
Sgrem Registered Users-pm+ Join Date: Oct 04 2005 Location: Algoa, TX Age: 46 Posts: 11,130 Rep Power: 21491589	Not sure what is going on with yours.... But I have never flushed a motor....ever. A dozen motors or so....no idea how many thousands of hours.

11-23-2020, 10:27 AM	#7
stumpgrinder3 Registered Users-pm+ Join Date: Aug 04 2016 Location: Galveston County Age: 60 Posts: 1,129 Rep Power: 14030545	I dont flush them anymore.

11-23-2020, 03:18 PM	#9
Muddskipper fish control my brain Join Date: Dec 29 2004 Posts: 7,666 Rep Power: 21488405	What brand of motor?

11-23-2020, 06:25 PM	#10
bcoastal Registered Users-pm+ Join Date: Aug 08 2012 Location: Galveston Posts: 446 Rep Power: 1108818	Honda. I think I may have some other kind of issue. Really just curious if anyone ever flushes with soap to get green gunk out?

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