165 Merc wont heat up...

jhansen106

Cadet
Joined
Feb 24, 2004
Messages
15
When hooked up to ears in the driveway my 165 Mercruiser temp gage does not heat up. I ran it for about 5 min at 1100 RPMs. I just finish installing a new impellar assy in the outdrive. Any help???
 

doman

Petty Officer 2nd Class
Joined
Feb 29, 2004
Messages
120
Re: 165 Merc wont heat up...

check connection on the water temp sender which should be on your termostat housing <br /><br />Hope this helps
 

Doug Durako

Chief Petty Officer
Joined
Nov 17, 2002
Messages
519
Re: 165 Merc wont heat up...

Does the guage do anything? Is the water coming out warm from the exhaust? My old 165 would never get much past 140 degrees on the muffs with cold water pumped in.
 

DHPMARINE

Captain
Joined
Dec 16, 2003
Messages
3,688
Re: 165 Merc wont heat up...

I don't know the air/water temp in Seattle this time of year,but here in Mass. I would be surprised to see the gauge move before 8 - 10 minutes on a hose from a cold start.<br />DHP<br /><br />dhp
 

jhansen106

Cadet
Joined
Feb 24, 2004
Messages
15
Re: 165 Merc wont heat up...

Its 55 degrees here. The water is warm coming out wouldn't say hot. I'll check the connection but I thought it was on good. I guess cold is better than too hot...
 

DHPMARINE

Captain
Joined
Dec 16, 2003
Messages
3,688
Re: 165 Merc wont heat up...

I hope I'm helping you a bit.Before the repair work did the motor warm up quicker?If so,and it also overheated,you needed the new waterpump.<br />Just for reference...how long before the temp gauge goes up in your car or truck.Maybe a little quicker,but that's a closed cooling system.Not NEW cold water constantly going thru it.<br />DHP
 
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