planedriver
Cadet
- Joined
- Oct 3, 2008
- Messages
- 6
I have a 20hp Chrysler Model 203HG which has not been in use for about 12mths and have just fitted it to a 13ft aluminium boat for my son.
Last night just on dark, we took it to the river to try it out. The motor started second pull and sounded great, but after a few minutes cut-out and was getting a bit hot. Not wanting to cook it completely we paddled back so I could check it in daylight. Naturally my first thoughts were a shot impeller. Removing the side covers on the leg, it was obvious that it was pumping heaps of water out the back, but it's not getting around the head where it's needed. I checked for blocked pipes and blew through the connections and all seemed good. I dont have a manual on the thing, but assume the thermostat is located under the cast cover where the two hoses coming from the head side cover, attach below the fuel pump.
I'm wondering whether the thermostat is stuck closed. I disconnected both hoses a gave the motor a very short run, but no water pumped through the hoses despite heaps pumping out the back of the motor. Having possibly been in there since new, I am hesitant about undoing the screws on the cover unnessesarily in case they sheer off, creating me even more work.
Last night just on dark, we took it to the river to try it out. The motor started second pull and sounded great, but after a few minutes cut-out and was getting a bit hot. Not wanting to cook it completely we paddled back so I could check it in daylight. Naturally my first thoughts were a shot impeller. Removing the side covers on the leg, it was obvious that it was pumping heaps of water out the back, but it's not getting around the head where it's needed. I checked for blocked pipes and blew through the connections and all seemed good. I dont have a manual on the thing, but assume the thermostat is located under the cast cover where the two hoses coming from the head side cover, attach below the fuel pump.
I'm wondering whether the thermostat is stuck closed. I disconnected both hoses a gave the motor a very short run, but no water pumped through the hoses despite heaps pumping out the back of the motor. Having possibly been in there since new, I am hesitant about undoing the screws on the cover unnessesarily in case they sheer off, creating me even more work.