Jump to content

  • Welcome to Midlands Lotus Owners Club (MLOC)

    Register now to gain access to all of our features. Once registered and logged in, you will be able to contribute to this site by submitting your own content or replying to existing content. You'll be able to customize your profile, receive reputation points as a reward for submitting content, while also communicating with other members via your own private inbox, plus much more!

    This message will be removed once you have signed in.

I have a tappet type noise on my engine, any ideas, is it normal?

Mark H

By Mark H

 Share

It could be one of the following:

 

  1. Low oil
  2. Hydraulic tappets running a bit dry (a 'spirited' drive can sort this)
  3. the fuel purge valve (i think thats what its called) (but it doesn't alter with engine revs)
  4. A leaking exhaust manifold
  5. A case of the fact that some K-series tend to get all tappety in the winter and its nothing to worry about.
  6. Something majorly serious

The noise will be much worse if

 

  • the car is left unused for a few days or
  • left unused and then started in this cold weather.

The oil seeps back into the sump ( which is why we talk so much of a good oil as a film of protection should stay on the top end ) and the noise is the clearances 'running dry'. As the oil pumps and warms, the gaps are all cushioned by it....no or little noise. So if the noise is clearing when the engine is warm, no worries. This noise is also letting you know why you should never, ever rev an engine from cold.

 

 

 Share
Go to news articles

User Feedback

Recommended Comments

There are no comments to display.



Join the conversation

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

Guest
Add a comment...

×   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.

×

  • Latest topics

    Spotted at British Motor Show

    ...does it count if you spot yourself? I joined the SELOC stand at the British Motor Show last week. There were half as many time machines* there as Lotuses! (Well I'm exaggerating actually because there was a Lotus Carlton on another stand and a 340R in the supercar section. Maybe next year I should cross link to the SELOC events page as it would be great to have a bit more of a showing and I know MLOC has some members a bit further south. Enjoyed having a bit of time this aftern

    kayj_prod
    kayj_prod | 
    General Talk 3

    Toxic Green S-Cup - (Aka Grogu)

    Hi all as with most of my cars I thought I’d start a bit of a build thread. However unlike most cars which I bought and built up to be highly modified the plans for the lotus are quite different and so this will be more thread of its life in my ownership. I have also created a Facebook page called “Toxic Green S-Cup - (Aka Grogu)” containing images of its progress pre and post purchase. Build Page Guide Page 1 * Pre-purchase Photo‘s * First maintenance wash * Trip to Brands Ha

    DC2-CJH
    DC2-CJH | 
    Garage 40

    Elise S2 111R MFRU multi function relay unit replacement

    Hi Everyone, I need to replace the MFRU on my Elise 111R and I am looking for some advice please. Firstly, can this be done from above, or is it necessary to remove the under tray and do it from below? I am uncertain how much slack are in the connector leads. Also, should the unit simply slide up and off the mounting tab, or is it locked somehow, as mine won't budge. Is there a locking tab that needs to be deflected to unlock the unit. I can't find anything anywhere about thi

    Simon Chapman
    Simon Chapman | 
    Technical Talk

    Accident Repairers

    Devastatingly I've just had a low speed collision in my Evora - less than 5mph but the front bumper/valance panel is damaged; does anyone know of a decent specialist who can repair/replace the panel - the insurance companies approved repairer will probably be no good - I'm in South Yorkshire  - please help kind regards  Richard

    Richard Bell
    Richard Bell | 
    General Talk 1

    For sale

    I have for sale a s2 factory short hard top in azure blue . Its currently for sale on ebay if anyone is interested.   Thanks .

    daz-man
    daz-man | 
    MLOC TV

  • MLOC classifieds

    There have been no adverts submitted yet

  • MLOC garage

  • Member Statistics

    4,642
    Total Members
    4,445
    Most Online
    Simon Chapman
    Newest Member
    Simon Chapman
    Joined
×
×
  • Create New...