m50 ticking noise

[e30ftw 403]

My m50's got abit of a ticking / knocking noise. Sometimes you can't hear it at all, Usually when you first start up cold its quite loud like almost a rod knock kinda loud, other times you can't hear it or its very quiet but still there. When driving it will come and go too.

It doesn't sound deep enough to be a bottem end knock but then again thats by going by youtube videos of rod knock.

If I pull the valve cover whats something to look out for ? Do m50 lifters make a tick if they are stuffed or something?

It's a non-vanos motor too.

[*Glenn* 854]

Whats the engine oil capacity now since you modified your sump ?? Most m50/M52's run about 40% of there oil in the head when running.

[e30ftw 403]

Still dumped 7l in there.

It had the tick before the sump broke open but its slowly been getting worse especially the last couple days.

[*Glenn* 854]

The oil pick up might be restricted if you didn't allow enough clearance for the oil pump to suck up oil. These engines require good oil flow and run alot of oil up top when running

[kerry 10]

had this issue on a race car we had years ago, noisey as lifters from oil starvation

[e30ftw 403]

How would you fix that ? Or are they stuffed ?

Edited July 23, 2010 by e30ftw

[kerry 10]

make them solid with ball bearings and shims but you are still left with the issue of lack of oil!

[Jono51 58]

what oil pressure is it running at?

have you checked that?

lift the rocker cover and check the cams for wear,

could also be a cam bearing?

[e30ftw 403]

Did an oil change today and the tick is completely gone.

Meeean.