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Old 12-25-2010, 01:13 AM   #9 (permalink)
t vago
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Quote:
Originally Posted by moTthediesel View Post
Now that - I'm not buying Driving in any given gear, give me an example of a way you could increase your EGT temps without burning more fuel? Maybe slowing the revs to the point where it's shaking like a wet dog would do it, but accelerating or hill climbing is the more typical way of making the needle climb. And either of those situations certainly involve burning more fuel, do they not?
For a spark-ignition engine, it's possible to have high EGTs as a result of a lean AFR or as a result of severely retarded ignition timing. For a diesel engine, restricting airflow on the exhaust side will definitely cause EGTs to shoot up without burning more fuel.

For a properly maintained diesel, the only thing you'd be able to tell from high EGTs is whether or not you're burning a lot of fuel. You'd never be able to tell how much fuel you're burning with any degree of accuracy, simply by looking at EGTs.
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