Hi as per my previous post . I couldn’t get any oil pressure and eventually changed the cogs , iv know got pressure but still getting a ticking noise not all the time but the oil isn’t getting to the lifters now and again having a low ticking noise sometimes. Is there anyway I can increase the oil pressure, I know the lifters are self regulating but the engine is old so can I alter them as I’m sure there worn over the years or is it just change them cheers