Originally Posted by TQA
Check that it will start easily from cold. Insist that you have a dead cold engine for this.
The problem here is you need a cold engine, and a cold day. A diesel with low compression may start OK on a seventy degree day, if a bit slowly...(who will notice)...Then on a 45 degree day, it wont start at all...
Nothing will tell the buyer what a compression test tells, other than a compression test.