CNG related problems

[sarfraz5678]

Dear Schehxad
You are right. When the Petrol prices got exorbitant we were left with no option but to opt for CNG at the cost of Rs. 45-50,000. And there was no check by the Government. Everyone switched over to CNG and now we all have to face the music.
We opt for CNG to save few bucks but it becomes a continuous headache for some people. I drove my car for last five years on petrol without even a slightest problem. Now I have converted to CNG and facing the problems.
Please pray for all those who want to save few bucks but end up spending too much everyday --even their peace of mind, at times.

[camry47]

Hey I want to know about my second car which is cultus n its carby 2005 I've mileage problem with full cyndlr hardly it runs for 2 days in colony ... And on road after 100kms its empty what to do ?? And same pathetic mileage over petrolu can say 2km/ltr or max 6km/ltr My other car is running perfect n it goes 250km on cng and petrol 13-18km/ltr... I've adjusted it many time from different places but no use its shows same behaviour in 4 to 5 days

Sent from my BlackBerry 9780 using Tapatalk

[Xulfiqar]

by the blessings of pak govt...2.5days cng station closure many people now came across the problem that there cars cant run on petrol

who told these people that CNG alone is a viable fuel, CNG is installed in a vehicle to become a DUAL FUEL vehicle.

There is another problem too, when you run out of petrol, you get a can of petrol, when you run out of CNG, you cant get a can of CNG.

The situation explains itself, lack of common sense.

[Xulfiqar]

Dear Schehxad
You are right. When the Petrol prices got exorbitant we were left with no option but to opt for CNG at the cost of Rs. 45-50,000. And there was no check by the Government. Everyone switched over to CNG and now we all have to face the music.
We opt for CNG to save few bucks but it becomes a continuous headache for some people. I drove my car for last five years on petrol without even a slightest problem. Now I have converted to CNG and facing the problems.
Please pray for all those who want to save few bucks but end up spending too much everyday --even their peace of mind, at times.

I present my case too, diesel is still economical as a fuel in Pakistan. e.g. a nissan CD20 can return you 16-18 km/lit easily. a CD17 can touch the 20km/lit mark depending on application. Even the Fiat Uno diesel gets similar result.

calculate that, and then calculate the CNG kit price, driving around on petrol due to closure, and then take into account of highway use, and the best, mechanic ustaad tinkering with your engine every month, Diesel fuel wins.

Runs forever, very low maintenance but a little noisy and a little wheezy too in certain applications.

[camry47]

meri bi koi help kerdai

[isi0000]

I present my case too, diesel is still economical as a fuel in Pakistan. e.g. a nissan CD20 can return you 16-18 km/lit easily. a CD17 can touch the 20km/lit mark depending on application. Even the Fiat Uno diesel gets similar result.

calculate that, and then calculate the CNG kit price, driving around on petrol due to closure, and then take into account of highway use, and the best, mechanic ustaad tinkering with your engine every month, Diesel fuel wins.

Runs forever, very low maintenance but a little noisy and a little wheezy too in certain applications.

i dont think so.......
take it that way
suppose im driving 30km/day, i calculate total cost for five years i.e. only fuel cost with supposition that i never face maintenance cost and fuel prices never increases......which although wont happen

30km per day will be 30*30=900km per month, 900km*12 =10800 km per year and 10800*5=54k km in 5 years

for diesel

i suppose a hypothetical engine giving me mileage of 18km/l so

54k/18 =3000 liters of diesel used i.e 3000*92.1=RS 276300 for five years

for petrol

i suppose a hypothetical engine giving me mileage of 15km/l so

54k/15=3600 liters of petrol used i.e. 3600*83.71= RS 301356 for five years

for CNG

i suppose a hypothetical engine giving me mileage of 20km/kg of CNG so
54k/20= 2700 kgs of gas used i.e. 2700*57(roughly)= RS 153900 for five years

now i say my cng bomb causes me installation price of 50k and needs maintenance of 25k so total cost is

153900+50K+25K= RS 228900

so i saved 47k roughly from using CNG and think its not bad

[usama007]

Brother i own a 09 xli but my landi renzo cng is giving me problems evryday, i got it tuned from almost all good shops in lhr but all in vain,, pl guide me wht to do,, i have changed my spark plugs recently, the issue is pick and missing on cng

[Horse_rider]

i dont think so.......
take it that way
suppose im driving 30km/day, i calculate total cost for five years i.e. only fuel cost with supposition that i never face maintenance cost and fuel prices never increases......which although wont happen

30km per day will be 30*30=900km per month, 900km*12 =10800 km per year and 10800*5=54k km in 5 years

for diesel

i suppose a hypothetical engine giving me mileage of 18km/l so

54k/18 =3000 liters of diesel used i.e 3000*92.1=RS 276300 for five years

for petrol

i suppose a hypothetical engine giving me mileage of 15km/l so

54k/15=3600 liters of petrol used i.e. 3600*83.71= RS 301356 for five years

for CNG

i suppose a hypothetical engine giving me mileage of 20km/kg of CNG so
54k/20= 2700 kgs of gas used i.e. 2700*57(roughly)= RS 153900 for five years

now i say my cng bomb causes me installation price of 50k and needs maintenance of 25k so total cost is

153900+50K+25K= RS 228900

so i saved 47k roughly from using CNG and think its not bad

you lost the driving pleasure of petrol, and the maintenance of engine overhauling, plus you have to go to CNG every now and then, while in case of petrol you never have to go so frequently, also you spent time in lines on CNG stations. you drive your car on petrol whenever CNG was not there, you consumed CNG whenever you need filling CNG. i think you will cross the 47K limit, lol

[ahsan_pervez]

guys does a toyota belta 1.0l car run good on cng?? and can we even get a cng inside it??? head it jus has 3 cylinders ... soo do u guys think dat installing a cng kit in it wud be efficient??

[sarfraz5678]

Dear fyq: i need your advice regarding emulator/advancer. (Tomasetto cip4 basic) as i told you that my car seems to have no power in the morning on petrol and dont respond or responses very poorly while climbing even slightest upward steep, can it be due to faulty green box? Yesterday i went to the same mechanic he tinkered with the adjustment of green box and assured me that everything would be perfect now but that was not the case. Does the green box also plays any part when the car is running on petrol? By green box i mean Tomasetto cip4 basic stuff. Pl guide.

[amcolian1097]

I present my case too, diesel is still economical as a fuel in Pakistan. e.g. a nissan CD20 can return you 16-18 km/lit easily. a CD17 can touch the 20km/lit mark depending on application. Even the Fiat Uno diesel gets similar result.

calculate that, and then calculate the CNG kit price, driving around on petrol due to closure, and then take into account of highway use, and the best, mechanic ustaad tinkering with your engine every month, Diesel fuel wins.

Runs forever, very low maintenance but a little noisy and a little wheezy too in certain applications.

Agreed under ideal conditions.
Makes sense but where to find a car with engines so good to give this much average (probably only new one).

[Xulfiqar]

Agreed under ideal conditions.
Makes sense but where to find a car with engines so good to give this much average (probably only new one).

Nopes not only new - but the beauty of a diesel engine is that it is SO RUGGED that you can adjust it to run like new even after 400,000 kms. The problem we face in Pakistan is lack of diesel workshops - (I dont trust Gul Khan Bedford RAACKET, Hino etc mechanic to be qualified enough) and I also dont give a hoot at the stupid diesel lab nincompoop shops in Pakistan.

[Xulfiqar]

i dont think so.......
take it that way
suppose im driving 30km/day, i calculate total cost for five years i.e. only fuel cost with supposition that i never face maintenance cost and fuel prices never increases......which although wont happen

30km per day will be 30*30=900km per month, 900km*12 =10800 km per year and 10800*5=54k km in 5 years

for diesel

i suppose a hypothetical engine giving me mileage of 18km/l so

54k/18 =3000 liters of diesel used i.e 3000*92.1=RS 276300 for five years

for petrol

i suppose a hypothetical engine giving me mileage of 15km/l so

54k/15=3600 liters of petrol used i.e. 3600*83.71= RS 301356 for five years

for CNG

i suppose a hypothetical engine giving me mileage of 20km/kg of CNG so
54k/20= 2700 kgs of gas used i.e. 2700*57(roughly)= RS 153900 for five years

now i say my cng bomb causes me installation price of 50k and needs maintenance of 25k so total cost is

153900+50K+25K= RS 228900

so i saved 47k roughly from using CNG and think its not bad

So lets take into consideration the real world facts.

Car = Nissan (B-platform) with CD20 engine, what maintenance would it require for running 25,000 kms, ZERO - just engine oil and filter replacement.

Next take into consideration, the availability of fuel, you dont have to worry about running out and be stranded, because you can easily get D2 from anywhere.

Your converted CNG engine would require atleast 10 workshop visits, and your average wait/fill time for your 100 km lasting CNG cell is about 15 minutes at least (realistically - not you going at 3AM to fillup)

You are lugging a necessary load in your trunk sagging your suspension and also taxing the already wheezed out CNG engine further.

You would think 10 times before taking on a long journey, availability of fuel, engine adjustment etc, and even far worse when taking on a gradient.

Now lets take the cars another 175,000 kms into service, your CNG/petrol engine would have had its regular T-belt/pump, spark plugs, ignition componenets and some head work too or even an engine overhaul - because of the higher operating temperatures.

The diesel would have had its T-belt/water pump change (design dependant) - and would still be boasting full compression in all cylinders. Time in shop = less than 1% of its service life, time to fill 5 minutes and time between fillups - at least 750-800 kms on a regular tank.

I dont think so that the Rs 47,000/- saved is worth the agony of me worrying about CNG holidays (running on petrol), engine maintenance, running out of it in traffic jams (classic karachi scene) - and to top it - THEFT of CNG equipment - which will readily get me back to square one or even land me in the red.

Im not boasting that Im super rich and I poop money in the toilet, but Ive got live experience - the cars in my household in Pakistan have a ledger (dad's thing) and the diesel has the lowest overall cost and runs equal distance to the petrol ones.

Even here in the US - I have a diesel benz, - its a 3.0 litre 6 cyl non-turbo - lazy yes - but only in low rpms (different story - as the engine is 24valve, DOHC, oversquare and redlines at 5400 rpm), and a nissan altima 2.5 (4 cyl) - QR25 engine.

Both cars require the same fillup amount - USD 75/- (petrol is cheaper by 15 cents a gallon). One car gets 340-350 miles per tank, one car gets 560-600 miles per tank. You can guess which car does what.

yes the benz is older and requires a big GORILLA 100AH, 1000CCA battery to start, sounds diesely but its cheaper to run.

[muzaffar_ali99]

hi i have problem in my car that there is great smell something like petrol or coming from CNG (dont know), please suggest me what could be cause and where it can be fixed in lahore particularly in Mozang Area.

Thanks

[amcolian1097]

Nopes not only new - but the beauty of a diesel engine is that it is SO RUGGED that you can adjust it to run like new even after 400,000 kms. The problem we face in Pakistan is lack of diesel workshops - (I dont trust Gul Khan Bedford RAACKET, Hino etc mechanic to be qualified enough) and I also dont give a hoot at the stupid diesel lab nincompoop shops in Pakistan.

Agreed again.
Probably I could not make myself clear in my previous post. Between the lines I meant the same problem of not having good mechanics. Moreover, even the people who do have some knowledge can't do it by themselves. So, they have to rely on the same, not so good, mechanics. Even if you try to suggest something to these mechanics, they get irritated, in their hearts if not openly. The ultimate sufferer again is the user like me.

I would request the honouranble members of the forum to share any good experience with the mechanics and guide others on this account. Lets start from you Xulfiqar, do suggest some good mechanics in Karachi, if you know any?

[Xulfiqar]

the mechanics I know are good and honest parts fitters, but I can recommend Diesel Power systems for Good service for diesel injection pumps and injectors.

I used to work on engines myself, following the book and learned experiences along the way. I can put it in a nutshell, Do not try to out-engineer the engine unless you are at a very very competent level.

[Unszak]

https://www.pakwheels.com/forums/cng/171870-vitz-99-problem

[sk_020]

Aoa guyz.
I am having a prob on cng with my cuore.
When the car is parked and i accelerate it in first gear. it gives jerks for sometime. but after that. it performs well in other gears while running. prob is nly when i want to rev it in first gear. with Ac on. it goes more down. My car is 97000 km ran.on petrol its totally fine. no issues with pick.
Please suggest me what should i do ?

[lucky_leo]

Dear Fyq,
I've a problem with my Honda City IDS-i 2007. I've a problem that when the car is running on Gas and some times it jerks and check light get on and engine turns off. i usually switch off the engine and then switch on to get it retarded with motion force of the car. Whats wrong with it? May be you can guide me. Thanks

[khurramshamim]

Fyq,

I have Cultus VXRi 2007 with Lendi Renzo CNG kit (not factory fitted) with 50 KG cylinder. Giving 120 KM (max) on CNG with A/C, and 140 KM (max) without A/C in city. Is it usual mileage with this configuration ? Note that car has recently checkup by Suzuki showroom and after spark plugs and air filter change, fuel mileage is still same.