Vitz Kncok in Noon

[ustaad_007]

@thbaig

Sir use Hi Octane, knocking will be gone IN SHA ALLAH. If you use thick oil, fuel consumption will be ruined, and its not good for the engine in cold weather.

[thbaig]

@thbaig

Sir use Hi Octane, knocking will be gone IN SHA ALLAH. If you use thick oil, fuel consumption will be ruined, and its not good for the engine in cold weather.

everyone usually say that. But the point is why regular gasoline not knock in low temperature ?
If this is the case, car has to knock in either weather.

[Thinking]

I have experienced more knocking with Zic A+ (5W-20). Earlier was using Toyota oil (10-40) and the knocking was almost not there at all.

Add octane booster. situation has improved a bit however intend to switch back to 10-40 oil asap. I hope this will surely improve the knocking issue.

[ustaad_007]

@thbaig

Sir actually regular fuel is low octane. Low octane means some of the fuel will burn before going to the combustion chamber because of high temperature, thats why it sounds kar kar kar kar. Hi Octane can handle high temperatures.

[ustaad_007]

@thbair

Ok there is one more thing called knock sensor, may be its not working correctly or requires cleaning or replacement.

[ustaad_007]

@thbaig

Ok there is one more thing called knock sensor, may be its not working correctly or requires cleaning or replacement.

[imrananr]

Hi,
Vitz knocking is not a unique topic and every vitz owner have to bear it at some extent.

I have vitz 2007 , I have observed that it knocks only at noon. Neither in night nor in early morning hours. It is strange but it lead me to think that Vitz knocking may be directly related to operating temperature .

Is this the case ?

Avoid driving at noon.....

[sd]

i have same issue... use hioctane ur prblem will be slved.... if it still occurs try getting ur thrtle bdy servced... INSHALLAH after using hioctane ur prblem will be slved.. first empty ur fuel tank by consuming all the petrol. den use almost 2000rs hioctane and den use 60 40 ratio of petrol and hioctane... prblem will be slved... and avoid using TOTAL fuel... i exprencied alot of knocking in my GS150 too after getting fuel from total.. idk what is the reason...

[margallar]

i think it has something to do with the ocv which controls the vvti.

[muhammad.irtiza]

The real problem is that when the temperature is high, gas particles inside the shock absorbers gain kinetic energy and expand but when the temperature is lower the molecules lose kinetic energy and come back to their orignal position.

[ustaad_007]

@muhammad.irtiza

Sir howcome the shock absorbers cause the engine knocking?

[ustaad_007]

@sd

Did you use the Mukka Chowk TOTAL pump?

[Thinking]

is there anyone else experienced more knocking after shifting to Zic A+?

[muhammad.irtiza]

@muhammad.irtiza

Sir howcome the shock absorbers cause the engine knocking?

I thought it was knocking with the ground.

[sd]

@ustaad

yup. muka chowk total pmp... i think ye badnam hai isi wja sey... thts y u caught it... and once i also used total pmp at highway after shell pmp to the right... xprnced sme issue...

[capsat]

check for thermostat valve in the cooling system. what about cooling fans & coolant ?? running direct on plain water in radiator? if its is FUEL issue it will always knock, - Thats a high engine temperature & timing advance which causes knock only during afternoon thats' when atmospheric heat is at peak too

Hi,
Vitz knocking is not a unique topic and every vitz owner have to bear it at some extent.

I have vitz 2007 , I have observed that it knocks only at noon. Neither in night nor in early morning hours. It is strange but it lead me to think that Vitz knocking may be directly related to operating temperature .

Is this the case ?

[capsat]

The real problem is that when the temperature is high, gas particles inside the shock absorbers gain kinetic energy and expand but when the temperature is lower the molecules lose kinetic energy and come back to their orignal position.

@SER_GTR, @syncview, @Xulfiqar @rustam54 @margallar, @argtr65 - am speechless

@muhammad.irtiza

[saboor73]

The real problem is that when the temperature is high, gas particles inside the shock absorbers gain kinetic energy and expand but when the temperature is lower the molecules lose kinetic energy and come back to their orignal position.

you changed the laws of chemistry :S

[LordOsama]

The real problem is that when the temperature is high, gas particles inside the shock absorbers gain kinetic energy and expand but when the temperature is lower the molecules lose kinetic energy and come back to their orignal position.

You Sir, are a genius...
My car use to knock a lot since the time I bought it. After reading your comment I removed the shock absorbers of my car.

No more knocking, thank you for your help.

[SER_GTR]

Its There Because Now Your Engine Is All WARM After Morning Startup..& Due To High Compression Of These Engines...Fuel Detonates More Easily In Combustion Chamber When HOT ...REASON Is Simply Fuel Is Detonating Before TDC....Its FUEL....Low RON's...

Mix HOBC & Adjust Ratio...Start with 60/40 And See Where It Disappears.....Its A Common Issue In Almost Every New Car Running On Premium Fuel Here.....