"Mike" wrote in message
m...
wrote:
Why does an older enginr(class 8 diesel) vibrate more than
a new(newer) motor, same manufacturer?
i.e. what changes are happening as an engine ages/wears
that increases vibration/shake?
thanks gary
Electronic Fuel Pump instead of mechanical ?
New Dodges have that and are quiter than their older counterparts,
Totally different fuel system: High Pressure Common Rail - the same basic
system used on the Navistar [Ford] and Isuzu [GM] light diesels and not
applicable to the engines used in a Class 8 [Peterbilt, Kenworth, Volvo,
Freightliner] truck.
Carbon buildup, ring wear [non-uniform compression loss], uneven rod bearing
wear, bad valve timing from extended Jake-brake use ... any/all could be
factors in addition to motor-mounts and, even, front shocks.