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Crusader 350 not starting after winter
- Torsson
- Scurvy Dog
- Posts: 29
- Joined: July 10th, 2018, 3:43 pm
- Vessel Info: Carver 28 Voyager 1988 Twin 350 Crusaders
- Location: Sweden
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Re: Crusader 350 not starting after winter
- km1125
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Re: Crusader 350 not starting after winter
Torsson wrote:Source of the post The thermostat opens nice when boiled.
When boiled?? Do you know what temp it's supposed to open at and did you measure the water temp when it started opening?
You need to get the belt problem fixed first. Slippage there will definitely reduce the ability of the pump to push water. Are you just trying to replace the belt that's on there or are you looking up the actual belt for the motor? Those could be different due to a prior owner.
The *last* thing I'd think about would be the "internal" water pump. Those very rarely are the cause of engine overheats. Usually it's the raw water pump or some restriction on the inlet (clogged strainer or through-hull) or some restriction further downstream like a clogged oil cooler or heat exchanger.
- Torsson
- Scurvy Dog
- Posts: 29
- Joined: July 10th, 2018, 3:43 pm
- Vessel Info: Carver 28 Voyager 1988 Twin 350 Crusaders
- Location: Sweden
- Been thanked: 1 time
Re: Crusader 350 not starting after winter
1. Thermostat starts open at 60 degrees celsius and is fully open before 70 so i can rule out the thermostat (The thermostat has 60 degrees celsius stamped on it).
2. Impeller looks good (Have orderd replacement but looks not like the issue).
3. The internal water pump seems works with the test i made. started the engine and att idle 600rpm or so i removed a coolant hose and hold my hand to make pressure and when i released the hand coolant came flowing, so it is at least not dead.
I will se if i can get the correct belts and not just something from the auto parts store.
The engine that gets to hot has hose from the internal waterpump to the water heater 3-4 meters away and then back to the thermostat house (Or other way) and when it started to get hot i think the water heater was running. Can the water heater somehow make/help the engine overheat?. Just a thought becaus last year i did not use the waterheater.
- bud37
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Re: Crusader 350 not starting after winter
- km1125
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Re: Crusader 350 not starting after winter
If you have any doubt though and want to rule it out, you can bypass it as bud37 says.
I suspect you have some blockage in the raw water flow somewhere.
You can get the belts at most automotive stores, they just need to cross-reference to the correct size. The types of belts are the same.
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- CYO Supporter
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- Joined: July 10th, 2015, 9:58 pm
- Vessel Info: 1989 Carver 3807 Aft Cabin
- Location: Ontario, Canada
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Re: Crusader 350 not starting after winter
Do you have a U shaped oil cooler on the front of the engine? If so, they are known to restrict easily from failed impellers in the past, disintegrated anodes, and marine growth.
- Torsson
- Scurvy Dog
- Posts: 29
- Joined: July 10th, 2018, 3:43 pm
- Vessel Info: Carver 28 Voyager 1988 Twin 350 Crusaders
- Location: Sweden
- Been thanked: 1 time
Re: Crusader 350 not starting after winter
Viper: The boat has been in fresh water since i bought it last summer before that it was in salt water since it came to sweden in 2006. When i have changed the belts i will take with me a temp gun and check the temps on next trip. No i have "Straight" oil cooler but i think the oil cooler is before the impeller what i can se Water intake->Hose goes somewhere under the kitchen and back in a u shape to oil cooler -> Seawater pump -> heat exchanger -> elbows etc. I think the manifolds are coolant cooled but not 100% sure.
The Seawater intake has a bowl shaped filter but looks like its not impossible for debre to go trough that and maby clogg the oil cooler. Will take with me someone that knows engines better than me when the belts arrive then i can make a full day and go trough everything suggested here.
(Did not think about the oil cooler because they where hidden under carpet covered "walkway" between the engines )
Other thing i was thinking the hours on the engines are somewhere 1100h but in the documentation this boat had Mercruser 5.7L Bluewater from 1988 and now the boat has 2 5.7L 350 Crusaders now so if the hours are correct or not i have no clue. What kind of hours is a good indication to get someone to rebuild and check everything?.
- bud37
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Re: Crusader 350 not starting after winter
- Torsson
- Scurvy Dog
- Posts: 29
- Joined: July 10th, 2018, 3:43 pm
- Vessel Info: Carver 28 Voyager 1988 Twin 350 Crusaders
- Location: Sweden
- Been thanked: 1 time
Re: Crusader 350 not starting after winter
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