Hi all I'm hoping someone can help as im at a loss here is the story.
I run 15/40 oil.
I did an oil change like I've done hundreds of times before everything was fine then the following starting happening.
On first startup I get a knocking sound from the head maybe 5 seconds then it stops or if I'm driving around in the 60 zone and hold 2nd around 2/2500k rpm I get the same sound go to 3k and it stops it was perfectly fine themn started doing it wasn't a gradual thing. I've also notice the smell of oil like I had an oily hand on the exhaust then started the car.
I know it's not a blocked pickup because I just had the sump of and cleaned it any help would be appreciated.