I have an R reg 1998 Mk3 1.7 tdi estate which has been very reliable until a couple of weeks ago. The problem is an intermittent starting fault.
E.g. the car will start from cold & run perfectly smoothly with no smoke, plenty of turbo boost & acceleration etc. but when I turn the engine off & try to restart it whilst the engine is hot quite often won't. If I leave it a couple of hours it usually starts again with no problem.
The glow plugs are quite new but with a hot engine they shouldn't be needed anyway.
My problem is that the fault is random so it's hard to build up a pattern.
I do have a Peugeot 307 Sport as backup but I like the old Astra as a workhorse for day-to-day use.
Your help please.
P.s. I've checked the fuel & air filters, pipes etc. & they're all ok. I was thinking a sticking cut-off solenoid.