Hi John I see what you're saying. However if you think about it, the only place water can go is into the intake and collect beneath the throttle butterflies. Changing that assembly and swapping the metering head over is probably a couple of hoursworth of work - at the very least it's a place to start to see what state it's in. Just pull one off a Volvo 760 in a scrappy. If you like I could put you on to Darren Bowker* for advice. He may well have seen engines left out in the rain as you describe. He is building my new engine from scratch (the original block wasn't in the car) and could rebuild yours if you're interested. Martin * PRV engine expert. Jonieboy@xxxx wrote: > Hi Martin ,thing is with the engine i have, the air filter has been left off > it for years and looks like it has been open to the rain so the k jetronic is > in a sorry old state and will need rebuilding or replacing, the oil looks to > have water in it,haven't had chance to give it a compresion test yet, i was > thinking i could replaced it with a volvo engine it would give me time to > rebuild this engine, it really wants to have the original engine in at some > time, what do you think?