Hi. Have just replaced the chain tensioner and fitted upgrade (gasket) to my Astra ... (2018 with 77,000miles), after the dreaded start up rattle has just begun. Can anyone advise me as to whether the fuel system is self priming, or will it need to be bled manually. (Inje tors were removed). Tried starting it but would not start. Don't want to flog the battery if I am wasting my time. Can't find any post's on this. Cheers Dave
