What should I do if my MerCruiser engine is too hot?
Usually, when first started, it is a good idea to watch the gauges and monitor the temp. Watch the temp gauge as the engine warms up. The temp will usually climb just a little above the normal operating temp and then it will drop down a little when the thermostat opens up. That is normal and it confirms that the therm is opening OK.
What causes vapor locking on a Mercury MerCruiser?
All Mercury MerCruiser 4 Cylinder, V6 and V8 engines. Under certain conditions, engines may experience a ‘vapor lock’ condition. The three most common complaints that vapor locking cause are: The engine starts. When the throttle is advanced, the engine quits running and will not restart.
What are common reasons my Mercury Grand Marquis has air conditioning problems?
What are common reasons my Mercury Grand Marquis has air conditioning problems? While there are a variety of reasons your Mercury Grand Marquis air conditioning won’t work, the most common 3 are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor.
What happens when engine heats up to operating temp?
As the engine heats up the ring-cylinder mate becomes looser so that the engine will run smoother and easier…but if there is too much wear the combustion gases will begin to blow by the ring-cylinder surfaces and will cause each stroke to lose power.
What’s the water temp on a Mercury outboard?
I find that my water pressure never goes beyond 4-5 psi, and the temperature slowly creeps up as I’m moving along at channel speeds at about 1000 rpm. As soon as I throttle up, the overheat alarm sounds, not surprisingly because at that point, the temperature is already near 180 degrees F, and the alarm sound at near 190.
How does the Mercruiser marine engine cool off?
Extra fuel filters, fuel manifolds, anti-siphon valves, shut off valves, tank selector valves and the number of 90 degree fittings used. Engine coolant temperature. How quickly the engine is shut off after running at cruising or higher rpms and how long the engine and engine compartment are allowed to cool off after use.
Why is my Mercury outboard overheating at idle?
Is doesn?t matter the rpm it will start fine and then quit. It will idle fine but will alarm and heat up when the throttle is advanced. Ran the engine again after a cool down. The telltail is flowing water fine and it appeared to have a clog that passed. pressure is 5 psi to 8 depending on rpm.
What to do if your MerCruiser sterndrives engine overheats?
Mercruiser Sterndrives Contact Engine Overheat Troubleshooting Excessive overheating can ruin your engine. If your engine is overheating turn it off and do not run it until you have fixed the problem. Your engine can overheat for a variety of reasons. It can be a temporary problem such as weed or debris wrapped around your lower unit.