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philliz

07-28-2007 09:22 PM

5.7LEfi overheating

My mercruiser 350 (5.7LEfi) is runniing too hot, especially at idle --- 180 - 190 degrees. I have a new thermostat installed, have plenty of water coming up from the outdrive, & the manifolds are cool enough to touch, so I assume water is getting out okay. The circulating pump inlet pipe from the thermostat housing is very hot however. I have taken the circulating pump apart & there appears to be nothing wrong with it.
Any ideas? I am mystified.

Fenderjack

07-29-2007 02:10 AM

what year is the motor, most efi's like to run a lil hot.

Griff

07-29-2007 03:35 AM

Verify the accuracy of the guage before you start replacing parts.

Is this a new problem???

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