Re: When a diesel engine runs too cold???

Posted by trucker 40 on February 07, 2011 at 07:57:18 from (69.152.170.245):

In Reply to: When a diesel engine runs too cold??? posted by dave2 on February 06, 2011 at 20:35:04:

What a thermostat does is that it gets the whole engine warm at about the same rate.It kind of balances the heat,and makes the engine work better,especially a Diesel.You are right about it being hotter and sealing better.
Now,what are you having a problem with?Loosing coolant?You dont say why you dont have a thermostat in it.You dont say if you can see where the coolant is leaking out or if it is.
You could put a thermostat in and see if that fixes it.You could see if you have any water leaking to the outside,or into the oil,you could pull the exhaust manifold off and see if one of the ports is clean which would mean its getting water from that cylinder.
Diesels run better when they are about 190 degrees like somebody else said.Since they dont have spark plugs it takes heat to ignite the fuel,and at 190 degrees is how they are made to operate.

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