Poor fuel economy of Honda Civic 2007 (aka Reborn)

[farrukhzeeshan]

As your car is a high mileage car so engine flushing and fuel system cleaning is very important.

High mileage:scream: Khawaja sb.... maafi de dain.....bhai ki gari sirf 98K chali hey

If maintained properly, Hondas are good for minimum 300k... without any issue....I have even seen engines with 450k and never repaired...

[farrukhzeeshan]

its very low, definitely something wrong with the car...and needs attention

whats the average on motorway....

Is CNG ever installed????

[sbnshahid]

On motorway it gives a good average of around 14k kmpl

I bought the car in 2010, the previous owner drove it for some 20k on CNG.

[sbnshahid]

The O2 sensor was checked again yesterday, was giving fine values, no frequency issues.
The smoke is clear

[sbnshahid]

Thank you everyone for the replies.
I did some digging on internet as well.
so far everything was just fine except the CATCON, so I got it serviced yesterday. I am hopeful the fuel economy will increase now.

I am very doubtful about engine flushing, dont want to ruin my engine with a risky thing. Thank you so much for you detailed responses @khjodat1

[farrukhzeeshan]

Is CNG kit completely removed? or still in the car

Make sure venturi is removed.

[sbnshahid]

Completely removed and sold when I bought the car.

[nnabeel]

boss apse pehle he maine kahan tha, check your catalytic converter. if the silencer guy ask you to make a hole in it, dont buy his idea instead get a new one or used if it is available in good condition.

[khjodat1]

Just remove the fuel injectors and clean them on ultrasonic machine. Magic motors in Model town do this for Rs 3000 approximately. Hopefully this will improve the mileage of your car. I am a chemical engineer and in industries we always flush our machines and other rotary parts with kerosene and this improve their life. Doing flushing has no bad effects if it is done with care and caution. How do you feel if you take bath without soap means your body is not completely free from dirt. So that is how flushing does good for your engine. Rest is your choice.

[abuzerkhan]

engine flush on every oil change never heard something like this from anyone. why one should flush the engine on every oil change?

[nnabeel]

HAHAHHAH, yes this engine flush technology in pakistan defies all the engineering developed so far for the engines n the world.

[khjodat1]

Engine flushing is not a new rather it was a part of regular preventive maintenance practice for vehicles used in army. Even now engine flush is recommended by many people all over the world. However, we cannot insist anyone to do it as every person has a mind set. If anyone don't like the idea of regular engine flush then don't do it. It is my personal experience of many years that engine flush do make a difference. In Pakistan we have severe operating conditions like lot of dust and heat. Our cars get few chance to run at high speed inside city resulting in formation of extra varnish and carbon deposits inside the engine. Unless you use high grade fully synthetic lube oil 5W/30 there are chances of varnish and carbon build up over top engine parts. In this scenario engine flush become necessary at least once or twice a year. However, I do not like to compel anyone. I am using engine flush technique to all my cars over the last many years and these are running like new. YOU BETTER BELIEVE IT....!!!!!

[nnabeel]

boss, i believe it, and i know ppl do it here. but in the stated case, i think engine flush might help......lets see the result can only be told by sbnshahid

[sbnshahid]

Can you recommend a good mechanic in Islamabad/Lahore/Multan who is expert at doing this engine flushing?

[sbnshahid]

I would rather wait for a while and see if the Cat cleaning works or not. The problem is that this car is not used regularly, it doesnt even clock 100 kms a week. Its mostly used on long routes, that too once in a month or once in two months.

[khjodat1]

You can go to Muzamil Oil store in Johar town who flush the engine without any extra charges. But you have to buy new oil from him and also bring one liter diesel and half liter kerosene yourself. Cheap engine oil you will get from Muzamil oil store for Rs 120 per liter. Contact number 042 35311420

[ali454]

Why not just buy an engine flush off the store and avoid all the hassle?
They too are kerosene based.

[khjodat1]

Dear Ali you are correct. Mostly these expensive engine flush contains kerosene. In my opinion do not buy canned engine flush and use home made one. Procedure of engine flush is first warm up the engine then drain all old oil. Now fill one liter diesel, 1/2 liter kerosene and one liter cheap. Start the engine and let run it on idle speed for 10 to 15 minutes. During flush do not race the engine and drive the car. After time up, drain the mixture and change oil filter and add new oil. Better before engine oil change use Gumout complete fuel system cleaner mixed with petrol. Gumout is available at Hyper star outlets. Also try to use synthetic engine oil like Shell helix hx7 5w/30.

[rehanfarhat]

Share some thoughts on this thread too:

Bought used Honda Civic Reborn Prosmatic 2008 giving bad fuel economy

We bought 2008 Civic Reborn (Prosmatic) at 46k odometer (genuine run as per mechanic and my team of car experts. Previous owner (1st owner - car leased in his name) may run it less because fuel prices were high during 2008-14) but car is in immaculate condition. Masha Allah. CNG never installed. The seller told us that it gives 11 km / Litre (HOBC run) in city and 15 on highway. But my average is appearing to be at 7km / ltr. (247km in 36 liter HOBC only) Irrespective of whether I run it tot…

[pwuser149950754995]

Mine Honda Civic 2010 Prosmatec Oriel giving the same average. Things I have already done:

1. Plugs are clean
2. Air fuel ratio (AFR) is fine 14:7
3. Michelin new tyres
4. Catalytic is serviced (though the service guy told that the upper part / filter of the cat is removed but it can't have much effect on the fuel economy as the lower cat part/filter is there and noise etc is fine).
5. No smoke of any kind from the exhaust pipe
6. Oil 10W30 honda oil
7. Transmission oil replaced (original honda)

Running out of options now