Warm up or drive off?
Drifting
Joined: Jun 2002
Posts: 2,464
Likes: 25
From: colchester UK
L8 as ever to the party, but with the answer.
I was apprenticed in the engineering field, primarily Diesels, but with a slant on petrol.
The main cause of engine wear in an engine is during the first 5-10 mins after start up. This is due to the excessive amount of petrol being pumped into the engine by the fuelling system. It is impossible to deliver the "correct" amount in the initial stages because the engine has not reached its proper working tolerances, or temperature to burn the "correct" amount of fuel, and release the energy to rotate the engine.
Engines we were always taught should be idiled for 10-15 secs, then warmed up by using them, ie get on the road and run them avoiding high rpm until the proper temperatures have been reached.
Kevin.
I was apprenticed in the engineering field, primarily Diesels, but with a slant on petrol.
The main cause of engine wear in an engine is during the first 5-10 mins after start up. This is due to the excessive amount of petrol being pumped into the engine by the fuelling system. It is impossible to deliver the "correct" amount in the initial stages because the engine has not reached its proper working tolerances, or temperature to burn the "correct" amount of fuel, and release the energy to rotate the engine.
Engines we were always taught should be idiled for 10-15 secs, then warmed up by using them, ie get on the road and run them avoiding high rpm until the proper temperatures have been reached.
Kevin.
Addict
Rennlist Member
Rennlist Member
Joined: Mar 2002
Posts: 629
Likes: 1
From: Melbourne, Australia
Hi Stephen
I have to agree with what seems to be general consensus - let the car idle for about 30 secs and then drive slowly for about 5 minutes to let the engine warm up.
BTW - we will be organising another drive day soon, hope you can make it again! I'm still dubbing the video from the last drive (my camera packed it in, had to get a new one). This time we'll head down the G.O.R.
Chat soon!
I have to agree with what seems to be general consensus - let the car idle for about 30 secs and then drive slowly for about 5 minutes to let the engine warm up.
BTW - we will be organising another drive day soon, hope you can make it again! I'm still dubbing the video from the last drive (my camera packed it in, had to get a new one). This time we'll head down the G.O.R.
Chat soon!
Instructor
Joined: Nov 2001
Posts: 217
Likes: 1
From: Rome (Italy)
I noticed my tip, for about 2 minutes from starting, if the engine is cold, doesn't go into 3rd, but remains in 2nd.
This with the gear **** in "D".
The only manner to go in 3rd is to switch manually or wait for 2 minutes.
Is it normal ? I suppose this behavior is implemented to make the engine warming faster.
Did anyone noticed this ?
Thanks
This with the gear **** in "D".
The only manner to go in 3rd is to switch manually or wait for 2 minutes.
Is it normal ? I suppose this behavior is implemented to make the engine warming faster.
Did anyone noticed this ?
Thanks
