CNG problems

Dear Dr.Abyshines,

Let me ask u in other way?which is best suitable cng kit for santro ?? 1)lovato 2)TES 3)Tartarini

also explain me about cutoff at rpm....means how petrol cutoff at what rpm ?? that we dont have to do manualy as now all are automatic kits ..

Edit Remark: Please do NOT quote preceding post (since deleted).

I have heard of LOVETO,dont know about the other two you mentioned.

Cutt off for CNG can be adjusted with the help of softwares on a laptop which is supplied to these mechanics and the concerned person from the Kit manufacturer.

It is set to a desired RPM,not only this but you have option of choosing CNG start from the point of ignition as well.

Just in case you loose the seetings due to unplugging the battery,you can always do it manually[literally] by alowly accelerating to 2000 RPM and then suddenly accelerating full throttle for couple of seconds in neutral condition.

Thanks Dr.Abyshines...

Edit Remark: Please do NOT quote preceding post (since deleted).

Hey ppl,

as gaurav mentioned about his matiz my problem is similar to that.

telling you the details first i have a hyundai santro xing(XG,2005)...i bought this car recently say arnd 8 months from a dealer and got the cng installed from a person in srinivas puri.he has installed tomasetto achille. The car when came to us after the purchase was perfect and ran like a cheetah but after the cng installation say around a month after the installation the car got choked on Petrol...by choked i mean it starts but then the rpm goes up and down up and down and finally dies...its like someone playing with the accelarator presses and releases presses and releases...

i have got it scaned from hyundai free service at lodhi road the guy found multiple errors in all the sensors and adviced me to continue running the car on petrol for 3 more days as all the sensors wud cost the whole car itself. My dad having some automotive knowledge got the advancer removed for sometime the car worked fine on petrol for say 20 days but then againg the problem returned.now this new guy[mechanic] crops up and says its the IAS senser on the throttle body that faulty.Adding to the expenditure my cng mechanice says the throttle body is wasted. The wiring seems to be okay.

please do read it all,

has all the details...

please do reply sick of the problem

I think you need more expert in hand review of your car problem.

By that i mean you need to take it to the best dealer to sort out the problem and without hassles.

Did you get the Fuel injectors checked.

To me its more or less likely to be problem with the wiring of CNG kit,or worst must be faulty advancer or the Lambda.

Do get them checked form the installed person.

The throttle body doesnt seem to be giving you the above problem.

You know what,what i have experienced is that when i kept thinking it to be problem with the Petrol part actually came out to be CNG advancer problem.The reason lies in the mechanism on which Advancer works,it fiddles with the original equipment.Even a minor error will be magnified and sadly people relate it to the Petrol part.

Do get the advancer Fuel injectors and Lambda checked.

you shouldnt have removed Advancer yourself.

Do check my earlier posts.

By the way whihc part of india are you from?

hey Dr.,

first of all i put up in delhi[east of kailash].

Now abt the car...i did get the fuel injectors checked on the first go....i have an old trusted local mechanic[for petrol] his works are pretty nice so he hunted the fuel injectors on the first hit...but even after that it seemed to be the same...the person has just failed for this case only

secondly we din't remove the advancer on our own it was the person who installed the kit did the job and den we got a new advancer installed as well.I have read almost all of your earlier posts and they do talkl  about the emulator as well....how about that?if it turns out to be the fault is it costly?

and to mention we had got the lambda removed as it was not functioning right, we have an opel as well with cng and without lambda so we preffered this car also to run on manuall adjustment only.

i am seriously done with this problem wont beat it at times people have screeched to halt to save a collision with me as the car had suddenly stopped working in the middle of the road...

please help

i heard that cng rates r going down

is that true

plz anyone if know about that then do reply

Rishabh,Emulator and Lambda are integral parts of the Kit.Removing anyone of them would cause serious problem in performance and the engine.

As you know ECMs are integral part of any car these days,its always adviced to get fitted everything for a master stroke.

You need to get a help from a trained and specialist mechanic for your CNG problems.

Once Injectors are given clean chit,the problem lies in the Wiring or some faulty electronic equipment that hinders in the Petrol mechanism.

It might be ironical that some electrical parts used for CNG are dedicated to Cut off the petrol supply and give false signal to ECM,so that car runs smooth without ECM coming to a hint that petrol is used or not.

And that in case of a Glitch,the Petrol part comes out Clean.

I am sure there is some serious wiring issue,you need to rectify the wiring first-then go for finding the faulty part/equipment if the problem persists.

That would mean apending some money again on the new wiring and installation.

Better be sure of the installer this time.

Hey Dr.,

thanks a lot for replying. Guess what i went to hyundai samara(okhla) to get my car checked from them as to what is the problem in the car. They took the car and checked it for 5 straight hours opened it like anything and then when in the evening they returned.

they said the car's engine is not producing enough compression and need an overhaulling now which would cost me 40 grnad dere. that is not all they have given me the car which would start (at times) with great load on battery as if battery down.

instead of the breathlessness on petrol the car sounds like coughing and to mention the car still runs perfectly on petrol. i am scared cos when it get choked to start it somewhat sounds like my opel astra before it went for an engine overhaul and new battery recently.

I doubt if it is the self they have not placed correctly cos they fiddled with the machinery with everything possible. what say?

please do reply!