Jump to content

Plenum Chamber rattle


Baloo
 Share

Recommended Posts

Hi All

Took the 95 V8i on a longish run yesterday - beautiful !

Today though, after a short run noticed a rattle from the engine bay. Feared the worst !

However:

Rattle does not seem to increase in intensity in time with revs increase, but does quicken intermittently under power and seems to be coming from the plenum chamber.

Read somewhere that pipes in there can come loose and cause a hell of a noise. My local landy specialist thinks the same.

Any other opinions here before I put this in to get the plenum chamber sorted. No performance problems and rattle def coming from around the plenum......

Many thanks

Baloo

Link to comment
Share on other sites

I've heard of the trumpets coming loose too, though I have not seen it but then there aren't many V8s here. Not sure what the fix is though... fill 'er up with concrete that should stop the little beggars :D

Link to comment
Share on other sites

  • 2 weeks later...
I've heard of this but never seen it, I would guess a quick wipe with carb cleaner and then sticking them back in with hylomar or loctite or somesuch would hold them in place.

Had the Plenum Chamber stripped and refitted today, with no probs found. Rattle is still present, done a lot of miles recently with no ill effects.

Landy man thinks it could be a piston ring. Surely this would increase the noise in time with the engine ?

Also, I've noticed that this rattle only comes in when engine is almost up to temp, not when cold.

Any further ideas anyone ?

Ta

Baloo

Link to comment
Share on other sites

As it only happens hot, it sound like one or more of the hydraulic tappets are not pressurising correctly……………..the noise should get worse with revs……….. if is got loads of miles then I suspect a top end overhaul is in order ………….. try an oil change, sometimes it has the desired effect.

Also, if it has moon mileage on it, then wear in the rocker shafts and rockers can cuase a rattle, but that is less common.

:)

Ian

Link to comment
Share on other sites

As it only happens hot, it sound like one or more of the hydraulic tappets are not pressurising correctly……………..the noise should get worse with revs……….. if is got loads of miles then I suspect a top end overhaul is in order ………….. try an oil change, sometimes it has the desired effect.

Also, if it has moon mileage on it, then wear in the rocker shafts and rockers can cuase a rattle, but that is less common.

:)

Ian

Thanks Ian, will try an oil change. doesn't usually get worse with revs tho.

Just approaching 80k, so watch this space !

Baloo

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.

 Share

×
×
  • Create New...

Important Information

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