hi all im in need of urgent help, i filled my car up with normal unleaded and stuck it up as normal sounded fine ran fine. my mate sed he'd take it down the private lane and he pulled off fine and then cut out. it wud turn over but not fire. as the fuel relay primes there is a high pitch noise from under bonnet that wasnt there before. its chucking loads of fuel through and sparking but not firing. if you unplug tyhe fuel relay there is no high pitch noise. it fires up on the fuel that is already in the engine. we have done a compression test and its goin to about 7 bar. without the relay in it runs for a few seconds and cuts out sometime back firing through the filter and exhaust. can anyone help its meant to be getting setup on saturday. its ran and driven fine before.

please help ring me if you like on 07714023963