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#1
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motor heating up at higher rpms
the motor runs fins at full throtle but after a few minutes the engine starts to heat up a little to much and then i back it down and it colls back down again
the engine is a 72 mercruser 188 i did notice there is a 1and a half inch hole in the flex hose going into the lower unit could this be a problem?? 
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#2
08-01-2008, 01:33 PM
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sounds like your flow is being restricted somewhere, follow the loop. Including poss bad t-stat
__________________
Willy 1986 V20 Old School 1992 V20 1992 150 Yamaha 1997 HydraSport 2250 Vector 2009 17' G3 Outfitter "G Spot" http://www.youtube.com/watch?v=TDebw...eature=related "I won't be wronged, I won't be insulted and I won't be laid on a hand on. I don't do these things to others and I require the same from them" JW
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#3
08-01-2008, 06:27 PM
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Also check your heat exchanger. I know that the early 3.7L's came with a smaller heat exchanger that had problems with overheating. Also how old is your exhaust elbow where the raw water dumps out? If it's more than 3 years old it may be getting blocked up. Check for leaks first, and then look for flow restrictions. Also check your impeller in the outdrive, they are known to spin the hubs at high RPM's.
__________________
2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD  AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664 
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#4
08-01-2008, 08:41 PM
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is it hard to get to the impeler
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#5
08-01-2008, 09:17 PM
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Quote:
__________________
2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664
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#6
08-01-2008, 10:03 PM
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Quote:
__________________
1985 Wellcraft V-20, Evinrude ETEC 150: SOLD 1979 Marine Trader 44, twin Ford Lehman 120s 2006 Panga 14, Tohatsu 20
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#7
08-01-2008, 10:25 PM
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Quote:
__________________
2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR 2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD AND THE PINK JEEP!!!! R.I.P. http://www.wellcraftv20.com/communit...ad.php?t=11664
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#9
08-03-2008, 07:55 AM
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188's are 302 Ford engines, make sure the belts are OK, if the belts get loose on a ford, the engine will over heat at higher rpms. Obvioously, check the impeller in the lower unit if the problem persist
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#10
08-03-2008, 09:33 AM
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there is a little residue from the belt
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Linear Mode
