One last job I need to do is diagnose the starting issue on the e36
I have fitted a new battery
Changed the alternator
Ews is ok

Sometime car won't start some times it will , it's driving me mad because I don't know what it is
My auto electrician said he thinks it's the relay before the starter because the starter was only reading 5volts Instead of 12 .
Is there a relay causing this or what are the possibile causes
If i push the car it's starts no problem
Also I have noticed there is a delay more than usual when the key is turned and it does start
Any advice to iron out this problem grackle appreciated