knocking in 1.6 gsi

[nov4801]

for the past 2 days i have heard a lil knocking sound coming from the engine. its ok on tick over but as soon as u put your foot down u can hear it, its comin from the left side of the head, any ideas what it can be?

[Karl M]

welcome to the big bad world of worn shells same as mine do it quick to save crank Karl

[nov4801]

worn shells explain please

[Adam]

Low oil.
Dead lifter.

Worn cam/rockers etc.

Worn shells wont cause a top end tap, they will cause deep knocking under load etc.

[ANDYRACER]

My nova sr did the same, 5 days later it blew up.

[nyabinghi]

Hi,
How a dead lifter can cause knocking? thx
I'm french and i don't know what is a shell, can I have some explaination please (or a pic) ?

nov4801 : in order to prevent your engine from break, waiting for the new parts, you can turn your distributor a little bit to reduce the ingition timig late (don't know what is the english words for this).
But it is a provisional solution

[Adam]

The liftet not taking up clearence, causing a "slack" between the follower and cam lobe....?

The shells he's referring to are the bearing shells(small metal parts that sit inbetween the bearings caps and the crank journal.

[nov4801]

its got an uprated cam but as i brought the engine with it in i aint sure what kind, been told it could be the tappet as i had me grandad take a look (ex mechanic) but i would rather hear it off some one with a nova and experience

[Stuart]

sounds like noisy tappets. either get new ones, or strip the current oens down and clean them... easy job in the haynes

[Asa-James]

DONT GET A NEW SET i did and a few are noisey, so my old ones are going back in this weekend (at leats they were quiet!!)