thanks chaps tried a few things today, heat shield fitted, new coil, adjusted float height, some improvement, but still not right the problem is not idling, this it will do all day bonnet open or closed, temp reads just below half regardless. the problem is restarting when hot, after 10-15 mins its ok (for example, go for a drive, stop at petrol station, by the time that i've been into shop and paid, go back to the car and no start, wait 15 mins and it fires up). tappets? i have no tappet noise, so are they are a tad too tight, might be worth a reset of the tappets, what gap is recommended? hot or cold? condensor??? neve thought of that might be worth a try then