Go Back   Team-BHP > Under the Hood > Technical Stuff

Thread Tools Search this Thread
Old 20th November 2009, 18:13   #1
DWind's Avatar
Join Date: Apr 2007
Location: Singara Chennai
Posts: 752
Thanked: 153 Times
Default Engine Smooth after switching off and on again


I drive a Verna. Lately I have noticed that once my car is warmed up (Needle in ambient range) and if I switch off the engine following the mandatory idling for a minute and switch on again I see that my engine is lot more smoother and has better response. This I do when I am waiting at a signal. Is this normal? or is there something wrong with my oil pump??

DWind is offline   Reply With Quote
Old 20th November 2009, 18:56   #2
Senior - BHPian
Join Date: Dec 2007
Location: Dubai
Posts: 3,840
Thanked: 116 Times

Since the engine is smoother and having better response, why do you think there is an issue?

Might be there, since the vehicle is in its optimum running parameters, the change. But, have never heard this one before.

DWind, simple advice: if it ain't broken, don't fix it.

Enjoy your ride.
HappyWheels is offline   Reply With Quote
Old 20th November 2009, 19:05   #3
Senior - BHPian
manikjeet's Avatar
Join Date: Sep 2006
Location: chandigarh
Posts: 1,605
Thanked: 106 Times

have the same kind of symptoms in my zen and i had it checked completely but nothing came out
so don't worry
manikjeet is offline   Reply With Quote
Old 20th November 2009, 20:46   #4
lsp's Avatar
Join Date: Aug 2009
Location: New Delhi
Posts: 378
Thanked: 178 Times

I had a similar kind of issue in my 2001 Hyundai Santro DX. Sometimes the engine used to behave abnormally - not the usual smooth, refined but rather coarse and noisier.

The problem couldnt be replicated as there was no fixed pattern or condition when it was occuring. Sometimes it happened on cold starts and sometimes after continuous running (>50 kms). Could never replicate and show to the mechanic.

What I used to do was switch off the engine, wait for one minute and start again. It used to be its normal behaved self. Never heard of a similar problem with any friend. I just attributed it to the age of the car.
lsp is online now   Reply With Quote
Old 21st November 2009, 14:41   #5
Join Date: Sep 2009
Location: Gurgaon
Posts: 49
Thanked: 0 Times

It may be bcoz in MPFI engines the choke gets activated automatically and shuts off after sometime when the engine gets warmed up. So in first go the car may have warmed up but the choke may have not switched off by then. So when u switch it off and restart it the engine senses no need for stiching on the choke so this time you may feel the engine to be smooth.
I have been feeling the same issue with my zen . any comments on my understanding are welcome.
dkcrpl is offline   Reply With Quote
Old 23rd November 2009, 22:05   #6
Join Date: Aug 2009
Location: Bangalore
Posts: 351
Thanked: 51 Times

I have felt the engine in my Getz 1.3 becoming smoother when the petrol in the tank is less than half the mark, compared to when it is full. I usually fill it with shell regular. I used to feel the same even in the Santro which I used to drive earlier. Wondering why is it like this.
mohan41 is offline   Reply With Quote
Old 21st December 2009, 18:54   #7
Join Date: May 2008
Location: Pune
Posts: 12
Thanked: 3 Times
Red face Engine smoothness achieved before 1st oil change - Vista TDi

Maybe a bit out of place but here is my observation about my new (~9700kms as of today) Indica Vista TDi:
The engine is running fine till now but since ~ 9300odo reading, I am observing that the engine has gone a little smoother than earlier. All other parameters remain the same: diesel bunk, RPMs on which gears are shifted up- or down-wards, average time and weather condition till the engine reaches the 2 divisions on the temperature panel, kmpl I am getting, traffic conditions under which car is driven....all these matters. In the last tankful, I dosed 28.89liters of diesel but 30ml of System D. This was the only difference, but I am sure this difference will not result into the kind of smoothness the engine is exhibiting.

Over the weekend, I checked all liquid levels but all were as usual. I also checked (and also had it checked) the 'quality of engine oil' but no one felt any problems with that and I also found it to be comparable with a similar car (vista tdi who had clocked ~ 8000kms).

So I also am clueless about this behavior and am making myself believe that the so called running-in is coming to an end :-) Anyways I have to get the car serviced in coming 2 weeks, lets us see that time.

A minor observation: after my 2nd free servicing (@ 5000KMs) the turbo has gone a bit sober when it starts; meaning the turbo kick I used to experience earlier is absent. In all there is no difference in pickup and etc, the turbo also is working well (I hear the faint turbo whine by driving the car between 2000 and 2500rpm in the 3rd gear along side of a tall wall) but it's kind of strange, any similar observations?

suhas_pm is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
10 automakers sued over keyless ignition not switching engine off GRAND23 The International Automotive Scene 29 2nd September 2015 20:23
Switching off the engine at traffic lights Rough Square Technical Stuff 83 14th April 2015 14:57
Switching ON headlights shuts OFF the engine aargee Technical Stuff 35 21st July 2013 23:09
Punto music system (not stock) not switching off after switching off engine!! praz Technical Stuff 17 9th March 2011 09:55
Zen - Engine Switching off on long drives Tiger Technical Stuff 10 11th January 2008 10:28

All times are GMT +5.5. The time now is 16:43.

Copyright 2000 - 2016, Team-BHP.com
Proudly powered by E2E Networks