Thanks for the advice Discomania...ace nomenclature by the way!...The two problems always occur together and whenthe temp guage is not in the red it will turn over and start OK. I've been advised it may be oil in the wiring harness under the drivers seat which is indeed oily to...

Hi Guys Newbie here...so be gentle. After some years of faithful service my 90 has developed a worrying habit...upon switching on (both cold and after running) the temp guage flys over to red and the engine turns over but doesn't start. My local engineer, a reliable and trustworthy chap...