Jump to content

Discovery v8 oil non return Valve??


gkm24

Recommended Posts

I have a 96 v8i auto Discovery 3.9 which starts and runs great with loads of power and very clean engine internally BUT (and theres always a but) on initial start and subsequent starts after about 1 hour standing, the hydraulic tappets rattle for a few seconds and then are perfectly silent. As I say, on the whole the engine runs very very sweet and I cant fault it. I can understand 1 tappet rattling or maybe 2 but its the whole lot rattling. I thought it could poss be oil pump but the oil pressure is good and even so the oil should not drain back out of the tappets, so i was wondering if anyone knows if there is a non return valve in the oilway in the engine. I have looked at the engine in the manual and cant see one or it is not shown. Any ideas? I was thinking about changing the cam over winter for one with a bit more torque and then also the oil pump anyway. Any help greatly appreciated,

Link to comment
Share on other sites

99% sure its your oil :)

What oil is in the engine at the moment ?

And, in answer in advance to your answer - drain oil, fit new filter and use valvoline VR1 racing oil :)

I have evn converted Mr Bull Bar Cowboy to the stuff :lol: (:P Ian)

Nige

I am currently useing GM 10-40w semi synthetic oil. Is there a specific oil filter I should use? I think the one on it is a coopers filter. Is it critical to fit a genuine one? thanks for the reply.

Link to comment
Share on other sites

I am currently useing GM 10-40w semi synthetic oil. Is there a specific oil filter I should use? I think the one on it is a coopers filter. Is it critical to fit a genuine one? thanks for the reply.

I tned to be paraniod after a mates racer engine was wrecked by a cheap oil filter imploding and jaming up the flows, for the sake of a few quid I use genuine, or if I can't get that then something decent FRAM maybe.... but NOTHING in a white box that nobody wnats to own up to making :blink:

Chnage the oil and filter from what you have said above VR1 and a filter will sort yours out :)

Report back :)

Nige

Link to comment
Share on other sites

I tned to be paraniod after a mates racer engine was wrecked by a cheap oil filter imploding and jaming up the flows, for the sake of a few quid I use genuine, or if I can't get that then something decent FRAM maybe.... but NOTHING in a white box that nobody wnats to own up to making :blink:

Chnage the oil and filter from what you have said above VR1 and a filter will sort yours out :)

Report back :)

Nige

I will let you know.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We use cookies to ensure you get the best experience. By using our website you agree to our Cookie Policy