Hey,

I got a 2001 AU Ute on LPG recently serviced and running good and about 2 weeks later started running extremely rough like it has a massive lumpy cam and is loosing coolant to the point I almost have to put in a litre of water every second or third day.

I can’t see a leak coming from anywhere and have checked the dip stick and oil cap and the oil looks perfect like it just came out a new bottle.

Once it warms up and drives for a few minutes it is back to normal and runs fine.

Anyone have any theory’s on what the problem could be ?

do a pressure/compression check to rule out blown head gasket.