Honda92
Active Member
- Joined
- Jul 18, 2011
- Messages
- 64
- Points
- 8
This is a on a all stock 225 Promax with the oil injection removed. Ok so I hit a log at 70mph, the sportmaster is ok with no damage along with the prop. I must of hit the log at the right angle and slid along it causing wood to get into my cooling system. The sportmaster lower was plugged up to where I needed a cut up coat hanger to get all the wood out. I replaced the waterpump impeller after taking the housing off for inspection. I also flushed out the powerhead, removed/cleaned the thermostats, blew through the line going to the adapter plate, cleaned all the junk out from behind the poppet valve. After doing this I got to the point where I got water flowing out of pee hole again and it would idle without climbing above 143 degrees on my temp gauge I could also hold a constant rpm of 2500 and the temp would not raise. However above 2500 rpm it would climb quick. So I took the stats back out for inspection along with the poppet valve and cleaned as needed. At this point I also took off the lower again and now hooked the hose directly to the copper water tube. I found with a infrared thermometer the passenger side cylinders run at 140-145 degrees. The driver side cylinders ran at 170-175 degrees after the stats opened up. So I swapped stats thinking that could possibly be the problem.. Exactly the same reading after swapping. So since this I have done the following:
-Took the stats back out and clarified that there was no wood stuck in them
-Removed the poppet valve and cleaned that again
-Took the heads off and didn't find much wood at all, couple tiny pieces and a couple small pebbles which all were in the driver side (side that is running hot) I blew out the ports with air and also blew out the heads with air since they were off.
At this point I put the heads back on with new gaskets and ran it on the hose again. Same thing, driver side cylinders were running 30 degrees hotter than the passenger side. So then I decided I should dig deeper into this problem:
-I pulled the powerhead off
-Took apart the adapter plate which had a few small pieces of wood in it and some pebbles which mostly were on the passenger side of the plate (Side that runs normal temp)
-I took out the stats and blew through the ports with the powerhead hanging from the hoist
-I took out the poppet valve and confirmed that there was nothing hiding behind there
-I blew out the hose that goes to the top of the powerhead
-I visually looked under the powerhead to where the water ports are for the heads and that was clear.
I put it together and ran it on the hose today without the lower unit on.. Still runs 30 degrees hotter on the driver side 170-175ish vs 140-145ish passenger side. After not finding much in the plate other than a wore out motor mount I was kind of anticipating still having the cooling issue. What am I missing? Any ideas would be appreciated!
-Took the stats back out and clarified that there was no wood stuck in them
-Removed the poppet valve and cleaned that again
-Took the heads off and didn't find much wood at all, couple tiny pieces and a couple small pebbles which all were in the driver side (side that is running hot) I blew out the ports with air and also blew out the heads with air since they were off.
At this point I put the heads back on with new gaskets and ran it on the hose again. Same thing, driver side cylinders were running 30 degrees hotter than the passenger side. So then I decided I should dig deeper into this problem:
-I pulled the powerhead off
-Took apart the adapter plate which had a few small pieces of wood in it and some pebbles which mostly were on the passenger side of the plate (Side that runs normal temp)
-I took out the stats and blew through the ports with the powerhead hanging from the hoist
-I took out the poppet valve and confirmed that there was nothing hiding behind there
-I blew out the hose that goes to the top of the powerhead
-I visually looked under the powerhead to where the water ports are for the heads and that was clear.
I put it together and ran it on the hose today without the lower unit on.. Still runs 30 degrees hotter on the driver side 170-175ish vs 140-145ish passenger side. After not finding much in the plate other than a wore out motor mount I was kind of anticipating still having the cooling issue. What am I missing? Any ideas would be appreciated!
