havoc_squad
Senior Chief Petty Officer
- Joined
- Mar 5, 2011
- Messages
- 739
I have a question involving whether this is normal or a warning sign of future engine water pump failure.
First off, here's the equipment details:
1993 Alpha One Gen 2, 3.0L.
Lower unit impeller change in Sept 2010, never been ran dry. (3 seasons including this one with this impeller). At the end of this year will probably replace this.
Do not know if engine water pump was replaced or not since its entire lifetime.
Background details:
The engine running, in every situation the engine stays around 135 to 140 degrees on the temp gauge, except when coming off a high rpm lake run back to idle in gear.
It goes from the 135/140 while at speed, then when a safe but fast slowing down to idle speed in gear, 20 seconds after this slowdown the 152/155 degree mark occurs for about 30 seconds to 1 1/2 minutes.
Then it goes back down to the 135/140 degree mark while still in idle and in gear.
My question:
Is this considered normal operating behavior, or would this be a premature sign of "under-cooling". This meaning that at 600 rpm idle in gear, is the cooling system performing as expected or not?
Just trying to head off a cooling issue if one exists before it becomes full summer lake weather.
First off, here's the equipment details:
1993 Alpha One Gen 2, 3.0L.
Lower unit impeller change in Sept 2010, never been ran dry. (3 seasons including this one with this impeller). At the end of this year will probably replace this.
Do not know if engine water pump was replaced or not since its entire lifetime.
Background details:
The engine running, in every situation the engine stays around 135 to 140 degrees on the temp gauge, except when coming off a high rpm lake run back to idle in gear.
It goes from the 135/140 while at speed, then when a safe but fast slowing down to idle speed in gear, 20 seconds after this slowdown the 152/155 degree mark occurs for about 30 seconds to 1 1/2 minutes.
Then it goes back down to the 135/140 degree mark while still in idle and in gear.
My question:
Is this considered normal operating behavior, or would this be a premature sign of "under-cooling". This meaning that at 600 rpm idle in gear, is the cooling system performing as expected or not?
Just trying to head off a cooling issue if one exists before it becomes full summer lake weather.
