We have a UK 1995 Cherokee 4.0 LTD Auto with a genuine 35000 miles, we
noticed a heavy bottom end knock on starting, only a knock or two, the sump
was removed and some wear was found in the big end bearings so they were
replaced, the main bearings were fine, the engine was turned over without
the coil connected to build up oil pressure, but when the engine was started
there was an end noise 10 times worse than before so it was turned off after
a few seconds.

The mechanic who carried out the work has rebuilt bottom ends before, and
has rechecked all the bolts etc on the car and all seems as it should be,
but he admits he is stumped by this, he has now suggested that we start
looking at the top end.

Anyone got any advice or had a similar problem.

John