TEMP GETTING WARM-gctid807011

[bucluv]

Hey guys how is everyone doing. Put the boat in the water two days ago but one of my engines starts to get hot when I'm under way. A idle the temperature stays steady where it is supposed to be once I give it gas or go underway it rises and extra 20 degrees I just put new manifolds and risers new thermostat new raw water pump any ideas thank you. I have raw water cooled 5.7 bravo 2 carburetor engines

[builderdude]

Did you change all these items because you were having issues previously? Were the current exhaust shutters functioning or replaced during this time? Was there one missing? All hose connections good at the intake side of the raw water pump?

[bucluv]

No previous issues just preventive maintenance the manifolds and risers were 12 years old the raw water pump hasn't been changed in 3 years and the thermostat i change every year

[builderdude]

Maybe a bad t stat? You can also double check water flow from the raw water pump to make sure it's actually pumping the proper volume.



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[Guest]

My engine temp started to rise before I did anything I checked the engine while running with a temperature gun found the issue was the gauge

[bucluv]

Checking the volume of water pumping in , is that with the engine running or just sitting in the water and taking off the intake hose going to the pump ? Thank you... I appreciate your help boc is great

[Chief_Alen]

Boat in the water or drive fully submerged, remove the hose off the pump, you want to place the hose into a bucket, start the engine for 15 seconds shut down the engine, measure the water in the bucket.

[builderdude]

Like chief said, your measuring the volume of water the raw water pump puts out (outlet side of pump) Try a new t stat first.

[bucluv]

Thanks guys I appreciate the input. Im gonna get my hands dirty this weekend. Thanks again have a great season

[sketch96]

Bravoitis!

[Ruffryder]

Yup yup

[builderdude]

"sketch96" post=807174 wrote:
Bravoitis!

Could be a possability. Boat needs to be out of the water to find out.

[Guest]

The alfas have a spot where they collect salt, between the leg and the bell housing. I'm not sure if the bravos are the same or not. Otherwise you've done all the stuff I can think of.

Chay

[sketch96]

bravo is the same. Here's mine and this boat was never moored and always Flushed according to the PO. Flushing doesn't help this situation unfortunately.

The opening is almost totally closed off. Ok at idle. Not good underway.


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[bucluv]

Just talking with a friend of mine and he was having the same trouble he put thru hull fittings going to the pump and eliminated the pickup from the outdrive. He's very happy with the results. If it is the pickup from the outdrive going to the pump on the engine I might put the thru hull fittings in