Hope someone can give us some inspiration as we're facing defeat with this problem :-[
Marcus (MK1_BOY) came round yesterday with a problem with his Mk1 GTI Campaign that I just can't fix.
It starts fine when cold, however when hot and left for between 10 minutes to an hour and a half it just will not start. I've checked for the favourite, dripping injectors. Its definately not that. In fact it seems to be the opposite, no fuel. Pulled an injector out and sure enough, no fuel. Took the boot off the metering unit and lifted the sensor plate and sure enough fuel came out of the injector. The sensor plate is correctly positioned at the bottom of the cone and is central.
Cracked the supply line to the metering unit and we have good fuel pressure, so I'm guessing its something to do with the metering unit.
Anyone got any ideas? Just seems really odd that it only does it when the engine is hot.