A warm good evening to you all, and thanks as ever for your advice.
Alas after much soul searching, nagging and being practical we have decided to part company with 'Rocco'. Am truly gutted, and not just at the giveaway price Tim Fry's is buying it off me.
They pressure tested the system themselves and could not find any leak in head gasket nor water loss, and they could only summise that it must have a porous block. As for the misfire, they deem it to be the camshaft missing a lobe. The cost of them even getting to the camshaft to confirm, let alone replacing it, together with a new block, renders it way beyond our finances and economical repair.
Knowing how little water it uses over time, if it wasnt for the camshaft problem causing the emissions to fail the mot then would have contemplated further keeping it at least until the third bundle of joy arrives in May. But i guess whatever the water problem is, and causing as it did an overheat and missing our son's nearologist appointment, we have had to go for a more basic car.
Will miss this forum though, it really is comforting to read the differing views on problems and how they affected each individual user.
If i had more time to source another car then i would have offered rocco up for sale here, am sure someone could work their magic and get it running again or even use the parts like the lpg system for their own. But I had until sunday to find wheels or face ruining a long-planned xmas trip to Devon so will have to accept all of £250 from Tim Fry's tomorrow and put it towards a run-of-the-mill family estate.
Again, sincere thanks to all and i wish you the very best of motoring in your rangey's, and landies of course..