11-03-2015, 03:17 PM
'Enrichment' doesn't quite work like that on a diesel...
The ECU compensates for the engine requiring more fuel to operate at low temperature, but this is merely to make the engine run and idle... It's not like a spark ignition engine where the AFR is adjusted and causes it to run smoother when cold...
Diesels have no 'throttle' remember, if you 'enrich' the mixture... You make more power and the engine revs go up. The injection angle is adjusted however and this does affect consumption..
However a cold running engine is not good for efficiency... As stated above, sounds like a thermostat issue.
The ECU compensates for the engine requiring more fuel to operate at low temperature, but this is merely to make the engine run and idle... It's not like a spark ignition engine where the AFR is adjusted and causes it to run smoother when cold...
Diesels have no 'throttle' remember, if you 'enrich' the mixture... You make more power and the engine revs go up. The injection angle is adjusted however and this does affect consumption..
However a cold running engine is not good for efficiency... As stated above, sounds like a thermostat issue.
