Ask Xulfiqar - An Automotive Encyclopedia

[moizadil]

The coolant flows through this pipe so that fuel does not condense and puddle in the intake manifold when its cold out.
Check throttle body gasket for leakage and sticky iac valve for fluctuating rpm.

Should I still fix the leak using tape since all the shops are closed for eid or should I just leave it?

Sent from my 0PJA2 using PW Forums mobile app

[speedster_101]

Maybe the gauge is wrong...
Check the fan timings and speed
It should be kicking off after almost 30 seconds of operation without ac

Sent from my iPhone using PW Forums

The autofan of my Khyber start working when the temp gauge reaches the middle mark. And it switches off after around 30 sec.
But I have observed that sometimes the gauge is a bit above half mark and the fan is OFF.
Why is that? Shouldn't it be ON at this position and keep running till the needle comes to middle position?
With A/C ON, the fan is direct hence ON all the time and needle never goes above middle mark.

[hassantahir2]

The autofan of my Khyber start working when the temp gauge reaches the middle mark. And it switches off after around 30 sec.
But I have observed that sometimes the gauge is a bit above half mark and the fan is OFF.
Why is that? Shouldn't it be ON at this position and keep running till the needle comes to middle position?
With A/C ON, the fan is direct hence ON all the time and needle never goes above middle mark.

Mine Khyber's auto fan kicks inn when the needle is slightly above middle and switches off when the needle comes exactly in the middle. I think it's normal.

Sent from my D2502 using PW Forums mobile app

[speedster_101]

Mine Khyber's auto fan kicks inn when the needle is slightly above middle and switches off when the needle comes exactly in the middle. I think it's normal.

Sent from my D2502 using PW Forums mobile app

What is the interval during which fan remains ON when the car is idling?

[hassantahir2]

What is the interval during which fan remains ON when the car is idling?

30-40 seconds without AC during idle approximately 60+ seconds when AC is on that too during idling.

Sent from my D2502 using PW Forums mobile app

[citywheelz]

@xulfiqar... salam bro... still waiting for your expert opinion

Sent from my SM-N910T using PW Forums mobile app

[argtr65]

Should I still fix the leak using tape since all the shops are closed for eid or should I just leave it?

Sent from my 0PJA2 using PW Forums mobile app

If leakage is very minor and there is no significant drop in water level in radiator then you can leave it.

[moizadil]

What do people mean exactly when they say that Garri kee "setting" cng pa hui wi hai?
The only thing I was aware of was that cng requires less air so they restrict the air flow. What are other things that are included in the "setting"? Can some please provide a comprehensive list

Sent from my 0PJA2 using PW Forums mobile app

[saboor73]

What do people mean exactly when they say that Garri kee "setting" cng pa hui wi hai?
The only thing I was aware of was that cng requires less air so they restrict the air flow. What are other things that are included in the "setting"? Can some please provide a comprehensive list

Sent from my 0PJA2 using PW Forums mobile app

For cng purposes intake Is blocked so that suction ability of engine impoves not because cng needs less air also car with distributor ignition timming is advanced to run on cng

[saboor73]

What's benefit of pouring this oil in diesel fuel

Sent from my iPhone using PW Forums

Diesel pump lubrication

[Vaqas1]

I have a diesel generator at work. Its a 40kva with lister petter gama engine. Someone from local lister petter recommend us to put every now and than put 1 L engine oil in its 400L fual tank. Is this recomended? I manage it and its around 5000 hours old now so far regular oil change working well. Radiator failed, replaced.

Sent from my LG-D800 using Tapatalk

[moizadil]

For cng purposes intake Is blocked so that suction ability of engine impoves not because cng needs less air also car with distributor ignition timming is advanced to run on cng

Ohh really? I was never aware of that. I thought maybe because gas is more combustible then maybe more air was required. Why do they need to increase the suction capacity?

What about efi cars? What do they do to them to make them run on cng? I would like to know every modification that needs to be made to make the run on cng. Thank you for the reply though

Sent from my 0PJA2 using PW Forums mobile app

[saboor73]

Ohh really? I was never aware of that. I thought maybe because gas is more combustible then maybe more air was required. Why do they need to increase the suction capacity?

What about efi cars? What do they do to them to make them run on cng? I would like to know every modification that needs to be made to make the run on cng. Thank you for the reply though

Sent from my 0PJA2 using PW Forums mobile app

Air suction is increased because cng goes through intake manifold air + cng = more mass so you need more such to pull more mass in

About efi cars its depends upon efi engine it self if engine have distributor less igntion a emulator and an advancer will be installed emulated fools ecu that engine is running on petrol so that spark occurs and advancer advances igntion timing so that spark occurs late and cng burns smoother

[saboor73]

I have a diesel generator at work. Its a 40kva with lister petter gama engine. Someone from local lister petter recommend us to put every now and than put 1 L engine oil in its 400L fual tank. Is this recomended? I manage it and its around 5000 hours old now so far regular oil change working well. Radiator failed, replaced.

Sent from my LG-D800 using Tapatalk

You can pour upto 2L of oil in 400L diesel but make sure you pour "ash less 2T engine oil"

[naveedm32]

A clogged fuel tank vent system can cause a vacuum in fuel line that causes fuel eventually stop reaching the engine,open fuel tank cap,if you hear a whooshing sound,like when you open a beverage can.Check fuel tank cap for blockage of vent.

On opening the cap there is no sound tank level is half.
Checked the fuel cap. It does have a check valve that sucks in but cant push out.
Opened and cleaned the throttle body that ended in a bit high rpm but atleast it does not die any more.
Still the rpm dive low every few min but comes back.
Can the purge control solenoid be the culprit? Or the charcoal canister giving up?

Sent from my iPhone using PW Forums

[moizadil]

Air suction is increased because cng goes through intake manifold air + cng = more mass so you need more such to pull more mass in

About efi cars its depends upon efi engine it self if engine have distributor less igntion a emulator and an advancer will be installed emulated fools ecu that engine is running on petrol so that spark occurs and advancer advances igntion timing so that spark occurs late and cng burns smoother

Okayy so what sparked my curiosity was that I removed an air restrictor(piece of metal) from inside the air pipe along with the cng metal type thing from the throttle body. Both shown in the picture. Since then the performance has gone up by almost 30% but the fuel economy has been reduced. I think this has something to do with the setting I'm not sure. The car I'm talking about is a 05 baleno and these 2 things mentioned are the only things I've taken off. Car has been used on petrol since I bought it in October last year and will be used on petrol.

Please tell me anything else that I need to do.

Sent from my 0PJA2 using PW Forums mobile app

[moizadil]

Okayy so what sparked my curiosity was that I removed an air restrictor(piece of metal) from inside the air pipe along with the cng metal type thing from the throttle body. Both shown in the picture. Since then the performance has gone up by almost 30% but the fuel economy has been reduced. I think this has something to do with the setting I'm not sure. The car I'm talking about is a 05 baleno and these 2 things mentioned are the only things I've taken off. Car has been used on petrol since I bought it in October last year and will be used on petrol.

Please tell me anything else that I need to do.

Sent from my 0PJA2 using PW Forums mobile app

Sent from my 0PJA2 using PW Forums mobile app

[saboor73]

Okayy so what sparked my curiosity was that I removed an air restrictor(piece of metal) from inside the air pipe along with the cng metal type thing from the throttle body. Both shown in the picture. Since then the performance has gone up by almost 30% but the fuel economy has been reduced. I think this has something to do with the setting I'm not sure. The car I'm talking about is a 05 baleno and these 2 things mentioned are the only things I've taken off. Car has been used on petrol since I bought it in October last year and will be used on petrol.

Please tell me anything else that I need to do.

Sent from my 0PJA2 using PW Forums mobile app

Mileage droped on cng or petrol? If petrol most probably someone in past might have played with tps values get it calibrated from a good mechanic with proper tools and mot by andaza

[moizadil]

Mileage droped on cng or petrol? If petrol most probably someone in past might have played with tps values get it calibrated from a good mechanic with proper tools and mot by andaza

Ohh, thank you for your input, I really appreciate it and yes petrol. I'll get this done one Sunday when the shops open. Btw, will it be done using electronic equipment such as a computer of something else?

Sent from my 0PJA2 using PW Forums mobile app

[saboor73]

Ohh, thank you for your input, I really appreciate it and yes petrol. I'll get this done one Sunday when the shops open. Btw, will it be done using electronic equipment such as a computer of something else?

Sent from my 0PJA2 using PW Forums mobile app

Yes multimeter is needed to calibrate tps values