RPMs when starting up

[NSBound]

I hear the "common sense" thoughts, but then I think the engineers who conceived, designed and built my tractor more than likely know a whole lot more than me about engineering and design.

 

[jenkinsph]

I hear the "common sense" thoughts, but then I think the engineers who conceived, designed and built my tractor more than likely know a whole lot more than me about engineering and design.

I hope they know more than I do if not we all need to sell and do something else.

BUT, what are the engineers trying to achieve? I suspect that controling emissions is a bigger deal than engine longevity. My 4520 with throttle down starts up at 1300 rpm and I would prefer something closer to 1000 rpm.



Steve

 

[lungdoc]

With our 4320 I've found it tends to hesitate and blow a lot of smoke if started at minimum throttle when cold, seems to "catch" and go smoother at about 1/3 which I thik is what manual says. I'll usually do that so building isn't full of smoke but turn it down almost immediately.

 

[RalphVa]

On both my JD 4010 (with glow plugs) and 240D Benz, these require about 1/2 throttle in really cold weather for them to start and to continue to run. Just throttle them back to about 1200-1500 rpm once they start.

Best protection for the engine on cold starts is a good 0wxx oil in the crankcase. That oil will provide instant lubrication to the valve train even down to -40 C/F.

Ralph