Jump to content
foster461

Odd engine noise when started from cold

Recommended Posts

Hi Stan,

don't mind air trapped in the engine, this is never the case.

In my poor opinion this is the hope of the desperates.

Desperates, sorry for that.

Ciao, Marco

Edited by Z320

Share this post


Link to post
Share on other sites

BTW, you look great, very  enthusiastic!

What I would do next - if you want my advice - is to run the engine without fan belt.

Edited by Z320

Share this post


Link to post
Share on other sites

I heard a similar noise on a 4 recently, the source was slightly loose fan blades, all blades could be moved by hand, worth checking.

Paul

Share this post


Link to post
Share on other sites

My car doesn’t have a fan. It has a narrow belt conversion and a pusher Kenlowe. 

Rgds Ian

Share this post


Link to post
Share on other sites

I still have not tracked down the funny noise but I have a few more data points.

  • The noise does not start when the engine is started, it lags by a few seconds.
  • The noise does not change with engine rpm
  • Operating the clutch does not have any affect on the noise
  • The noise goes away after a short time but the engine is not yet up to full operating temperature. It has a bellows style thermostat that opens around 180 degrees.
Edited by foster461

Share this post


Link to post
Share on other sites
1 hour ago, Ian Vincent said:

I agree with all of that Stan. 

Rgds Ian

I wished we lived closer Ian, I'd like to put these cars next to each other and compare noises.. I have been all over the engine and underneath with a stethoscope as well as some tubing in the ear just trying to figure out the general location but I have yet to find it. If I had to commit today I would say it is coming from the rear of the engine or somewhere in the middle of the car, not especially at the front where all the whirring things live. Nothing (fan, generator, water pump etc) are loose. Car drives and runs like a new TR3a other than this noise when started from cold (cold is relative given the New England summer where it is likely to be 90 degrees for the rest of July).

 

Stan

Share this post


Link to post
Share on other sites

Hi Stan,

 my symptoms follow yours almost to a 'T'. I have not noticed it lately (last few weeks).

 

Roger

Share this post


Link to post
Share on other sites

Might I suggest you bypass the car's heater (..easy enough done with a closed loop of rubber hose) and then try it.   If nothing else it will eliminate the possibiity of an air-lock in that part of the system (i'm thinking old household radiators and pipes which bang if they have air in them) as being the cause. 

Share this post


Link to post
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.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  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.

Loading...

×
×
  • Create New...

Important Information

Please familiarise yourself with our Terms and Conditions. By using this site, you agree to the following: Terms of Use.