Question about Yamaha YZF-R1 Motorcycles

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Oil in radiator

Did not run hot just putting oil in radiator will a bad oil cooler make it do that

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Hi, no a bad oil cooler will not do that. You might have a bad head gasket or a crack in the cylinders.

Posted on Aug 13, 2016

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wd4ity
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SOURCE: Hello, My 2011 fatboy lo runs very hot. I have

There's hot and there's too hot. Heat is one of the factors that shorten the life of an engine, especially an air cooled engine. You bike is equipped with the oil jets that help cool the pistons. If it were my bike, I'd take the bike to a known good high performance shop that had a dynometer, an exhaust gas analyzer, and a good mechanic that knew what he was doing with both the bike and the dyno. I'd have them run the bike up through the RPM range and check the fuel-air mixture ratio at various rpm levels. If the bike is running too lean, it'll run hot. Lean is mean but too lean is bad. The mechanic may can richen the mixture up just a bit, say from 14.2:1 to 13.7:1 and reduce the heat while maintaining the performance you want. It's worth a try.

Good luck
Steve

Posted on Jun 01, 2011

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