Jump to content
Do Not Sell My Personal Information


  • Join Toyota Owners Club

    Join Europe's Largest Toyota Community! It's FREE!

     

Audible Valve Clearance Check.


Meldrew
 Share

Recommended Posts

My 5 year old D-4D has covered 75k miles, full Toyota service history, performs well, but has always

had a rattly top end, as if valve clearances too large.

What is the Audible test Toyota advise to check clearances? What do you listen for? seems a bit Heath Robinson to me.

Or could it be injector noise?

Link to comment
Share on other sites

My 5 year old D-4D has covered 75k miles, full Toyota service history, performs well, but has always

had a rattly top end, as if valve clearances too large.

What is the Audible test Toyota advise to check clearances? What do you listen for? seems a bit Heath Robinson to me.

Or could it be injector noise?

I expect it is a bit of "experienced technician's ear", but that's possibly preferable to removing timing belt covers, injection pipes, cylinder head covers etc, which is what is suggested is needed to be able to apply the shims that are supposed to be available.

Never convinced they ever do this audible test as is suggested in the service schedule, but I could be wrong. I'm sure the mechy experts will have a better explaination.

Link to comment
Share on other sites

My 5 year old D-4D has covered 75k miles, full Toyota service history, performs well, but has always

had a rattly top end, as if valve clearances too large.

What is the Audible test Toyota advise to check clearances? What do you listen for? seems a bit Heath Robinson to me.

Or could it be injector noise?

It is heath robinson. It would take a brave even very experienced mechanic to determin that a noisy top end is the valve clearance unless they only profess to know if it could be the valve clearances. Its like saying "make a visual inspection of the tyre pressures"!

If you want to listen to the injectors, get the biggest screwdriver you can find and press the blade into the body of the injector and then press your ear into the handle. They make a fair racket when they snap open at 1500bar.

Link to comment
Share on other sites

My 5 year old D-4D has covered 75k miles, full Toyota service history, performs well, but has always

had a rattly top end, as if valve clearances too large.

What is the Audible test Toyota advise to check clearances? What do you listen for? seems a bit Heath Robinson to me.

Or could it be injector noise?

It is heath robinson. It would take a brave even very experienced mechanic to determin that a noisy top end is the valve clearance unless they only profess to know if it could be the valve clearances. Its like saying "make a visual inspection of the tyre pressures"!

If you want to listen to the injectors, get the biggest screwdriver you can find and press the blade into the body of the injector and then press your ear into the handle. They make a fair racket when they snap open at 1500bar.

Just done it, and they do make a racket, could well be the noise I am hearing when driving.

I am also looking out for a similar vehicle I can compare noise with.

It seems likely that no one has ever had valve clearances physically checked.

Link to comment
Share on other sites

Its a big and fiddley job which requires you to fish the shims out with a special magnetic tool. To be honest I would guess it only gets done following overhaul or major mechanical work.

Link to comment
Share on other sites


Latest Deals

Toyota Official Store for genuine Toyota parts & accessories

Disclaimer: As the club is an eBay Partner, The club may be compensated if you make a purchase via eBay links

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

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...




Forums


News


Membership