Engine should be cold when tappets are adjusted?

Tiny
ALI.ALVI
  • MEMBER
  • 2006 HYUNDAI SANTRO
  • 4 CYL
  • 2WD
  • MANUAL
  • 50,000 MILES
My car has manual tappets.I want them to be adjusted by mechanic. Workshop is about 1.5 km away from my house. Someone has told me that engine should be cold when tappets are adjusted. How much time I should wait at his shop to allow the engine to cool down.

Nice site :-)
Sunday, January 22nd, 2012 AT 11:51 AM

6 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Cold engine means it should be below 30 degrees Celcius, that is when you are able to hold engine components and able to with stand the heat. Usually it takes an hour or so for cooling, depending on weather.
Was this
answer
helpful?
Yes
No
+1
Sunday, January 22nd, 2012 AT 2:10 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Sorry, it should read 38 degrees.
Was this
answer
helpful?
Yes
No
Sunday, January 22nd, 2012 AT 2:10 PM
Tiny
ALI.ALVI
  • MEMBER
  • 54 POSTS
Another online mechanic told me that we allow the engine to cool down for 5 hours and then adjust the tappets. Do you think it is advisable?
Was this
answer
helpful?
Yes
No
Monday, January 23rd, 2012 AT 1:06 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
It is not necessary to wait that long. As long as the engine heat is bearable when you put your hand to it, it is sufficiently cooled.
Was this
answer
helpful?
Yes
No
Monday, January 23rd, 2012 AT 3:00 PM
Tiny
ALI.ALVI
  • MEMBER
  • 54 POSTS
There are two values of valve cleatrence. One for warm engine and other for cold. After waiting for 1 hour as you advised, I should go for which one?
Was this
answer
helpful?
Yes
No
Tuesday, January 31st, 2012 AT 1:42 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Use the one for cold engine.
Was this
answer
helpful?
Yes
No
Wednesday, February 1st, 2012 AT 11:58 AM

Please login or register to post a reply.

Related Camshaft Lifter Adjust Content