mostlysnow
Cadet
- Joined
- May 21, 2007
- Messages
- 26
I have a '72 25 hp evinrude I just recently replaced the impeller (water pump) it went out in '07.
after putting back together I was able to run the engine in a barrel of water (mostly at idle) water was circulating good and it would start on the first pull I was real proud to accomplish this, so I decided to hook truck up to trailer take to the lake. I ran the engine there a little before even unloading it (while in the water) to make sure it still woud start yeah it started on first couple cranks with electric starter and water was still circulating so I decided to go ahead unload and take it to the peer, and put the truck up while I was doing so I left motor running (kind of to warm it up) got in the boat to do a little floating around just puting along, got it up to about 5mph then up to 9mph we got about 1/4 mile from the peer and she started to sound different, no screeching or anything just sounded like a bogging down motor. then she finally died and I could not get her started again.
Loaded her back on trailer brought her home noticed it looked as if it got hot...I have spark, I have fuel (fresh 50:1 mixture) just filled up before going out. The tank vent fully open... anyhow I can not get it to even cough so I did a compression check got about 50psi top and bottom 60psi. I am guessing this is not great but good enough to at least run.
I am ashamed I didn't change the thermostat but I am thinking this might have caused the overheating, but now it is said and done need help deciding if head looks shot or not, any ideas will be appreciated, Thanks in advance
after putting back together I was able to run the engine in a barrel of water (mostly at idle) water was circulating good and it would start on the first pull I was real proud to accomplish this, so I decided to hook truck up to trailer take to the lake. I ran the engine there a little before even unloading it (while in the water) to make sure it still woud start yeah it started on first couple cranks with electric starter and water was still circulating so I decided to go ahead unload and take it to the peer, and put the truck up while I was doing so I left motor running (kind of to warm it up) got in the boat to do a little floating around just puting along, got it up to about 5mph then up to 9mph we got about 1/4 mile from the peer and she started to sound different, no screeching or anything just sounded like a bogging down motor. then she finally died and I could not get her started again.
Loaded her back on trailer brought her home noticed it looked as if it got hot...I have spark, I have fuel (fresh 50:1 mixture) just filled up before going out. The tank vent fully open... anyhow I can not get it to even cough so I did a compression check got about 50psi top and bottom 60psi. I am guessing this is not great but good enough to at least run.
I am ashamed I didn't change the thermostat but I am thinking this might have caused the overheating, but now it is said and done need help deciding if head looks shot or not, any ideas will be appreciated, Thanks in advance