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 Fuel flow rate l/hr at idle is quite high, Exora Turbo, Reading from Torque Pro

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TSSleeplessEyes
post Jun 4 2021, 07:39 PM, updated 5y ago

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Lately I noticed my Exora at idle, fully warmed up, is consuming more than 1.5L per hour, without any aircond alone.
To those who are more technical minded should know that it should idle around est 0.6L/hr. But again this just theory.
Engine load percentage is around 20+ percent at idle.

Here is a video of my RPM and fuel flow rate.
Its underneath the Volt meter and RPM meter.
https://streamable.com/i82ejj

*New & updated* Idling video: https://streamable.com/o8xu2s
Contains Short & Long Term Fuel Trim gauges

Anyone can share your litre per hour from Torque Pro?
Preferably engine 1.6L and above.

Update:
Earlier I mentioned that "Normal 14.7:1 Air Fuel Ratio (AFR) is 0.45-0.5V. Mine is showing 0.7V at idling , fully warmed up . Richer fuel mixture"

It seems after watching several videos, it seems its pretty normal for it to remain around 0.7Volts

This post has been edited by SleeplessEyes: Jun 10 2021, 12:25 PM
TSSleeplessEyes
post Jun 4 2021, 08:32 PM

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QUOTE(speedy3210 @ Jun 4 2021, 08:00 PM)
Campro CFE idleat 1.1-1.2k rpm? I thought it should be much lower like 7-800 rpm
*
Apologies. I uploaded the wrong video. Here is the correct one.
With engine warmed up.

https://streamable.com/i82ejj

It sits around 850rpm without aircond and gear in P or N.
The video shows 900RPM but that's probably after engine just started.

This post has been edited by SleeplessEyes: Jun 4 2021, 08:34 PM
TSSleeplessEyes
post Jun 5 2021, 10:50 AM

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QUOTE(e-lite @ Jun 4 2021, 09:44 PM)
What is the flow rate difference between cold start and already warmed idling?
*
Here is a video of cold start with high idling :
https://streamable.com/4q4rd4

From 2.5L/hr to 3.5L/L, but take into account its idling at 1.2K RPM without touching the accelerator.

QUOTE(ayamxxx @ Jun 4 2021, 10:02 PM)
Maybe ecu preset more fuel pump in to reduce time to get cold engine warm up.
*
Normally ECU for all cars will definitely inject more fuel = richer mixture .
As seen in the video, the O2 sensor voltage (the one with the Graph), is before the cat converter.

Normal 14.7:1 Air Fuel Ratio (AFR) is 0.45-0.5V. Mine is showing 0.7V at idling , fully warmed up . Richer fuel mixture icon_question.gif
I will need to check the after cat converter AFR

This post has been edited by SleeplessEyes: Jun 5 2021, 10:52 AM
TSSleeplessEyes
post Jun 6 2021, 10:19 AM

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QUOTE(ayamxxx @ Jun 5 2021, 03:03 PM)
U done any modifications? If yes send retune etc so your car brain note for your modification
*
No bro, the car is fully bone stock biggrin.gif
Anyhow this is the updated video, with new gauges

https://streamable.com/o8xu2s
TSSleeplessEyes
post Jun 8 2021, 09:26 AM

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Update: yesterday I took out the Mass Airflow sensor,
Clean it with Electronic Contact Cleaner.

» Click to show Spoiler - click again to hide... «


After clean, recheck again Short Term Fuel Trim (STFT) gauge, now its better, showing more towards negative %. Meaning amount of fuel injected is reduced to proper levels.

Although it didnt change the Litre per hour, but as much as I search Google for answer to resolution , it shows its not much an issue of this, but rather the STFT and LTFT values is more important.

Next is to clean throttle body but its a PITA to remove the plastic hose from the throttle body. Gonna spray from the Maf sensor hole.



This post has been edited by SleeplessEyes: Jun 8 2021, 09:45 AM

 

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