Everyone. I've been reading all the previous posts re: water pumps, thermostats, etc.
Weird problem:
Very rarely at WOT with a heavy load; my OMC Seadrive 2.7L (225 HP Looper) would overheat. The alarm would scream. My reaction is to bring the engine to idle and disengage the lower unit. After 1-2 minutes, the alarm goes out. ..Push along afterwards without any further incident.
I discovered:
a. very dirty fuel filter (cleaned it)
b. an intermittent spark plug wire. (Replaced it.)
c. I also changed the alarm (flaking out.)
d. I pan-of-water tested the thermostat.
The pump was replaced in January, 2008.
Today, WOT for awhile--no problem to 5400 RPM. The boat ran nicely. I *hope* it's okay. We'll see.
THEN:
..Much later, I was slow-reversing -- about 3 -4 minutes of slow reverse. Pee was starting to get less and less. Finally, overheat alarm. Back into idle; and pee was normal again.
Questions:
1. Anyone ever hear of overheat in a slow reverse??? Could there be a cavitation at water intake?
2. If I have this overheat condition, is the idle and run the right thing to do? Am I killing the engine by letting the engine idle? (Seem like running water at idle is a good thing.)
3. Any other ideas???????
Thank you in advance!
kenrbnj
Weird problem:
Very rarely at WOT with a heavy load; my OMC Seadrive 2.7L (225 HP Looper) would overheat. The alarm would scream. My reaction is to bring the engine to idle and disengage the lower unit. After 1-2 minutes, the alarm goes out. ..Push along afterwards without any further incident.
I discovered:
a. very dirty fuel filter (cleaned it)
b. an intermittent spark plug wire. (Replaced it.)
c. I also changed the alarm (flaking out.)
d. I pan-of-water tested the thermostat.
The pump was replaced in January, 2008.
Today, WOT for awhile--no problem to 5400 RPM. The boat ran nicely. I *hope* it's okay. We'll see.
THEN:
..Much later, I was slow-reversing -- about 3 -4 minutes of slow reverse. Pee was starting to get less and less. Finally, overheat alarm. Back into idle; and pee was normal again.
Questions:
1. Anyone ever hear of overheat in a slow reverse??? Could there be a cavitation at water intake?
2. If I have this overheat condition, is the idle and run the right thing to do? Am I killing the engine by letting the engine idle? (Seem like running water at idle is a good thing.)
3. Any other ideas???????
Thank you in advance!
kenrbnj
