A tuk sound in cng switch?

[shqamar]

hey people ,

i would like to ask our expert what is that cng sound when we switch on our ignition and cng lights starts to blink and after few second its a tuk sound come and the light go stable , why that sound comes b) do we have to wait for that tuk sound or start our engine before that tuck sound ? c) i own a cultus and that has a automatic choke system so the auto electrician believes i have to wait for that sound and than proceed starting but on the other hand my mechanic said u need to just start your engine with out waiting please enlightened your knowledge on this thanks in advance.

[CamryHybrid]

hey people ,

i would like to ask our expert what is that cng sound when we switch on our ignition and cng lights starts to blink and after few second its a tuk sound come and the light go stable , why that sound comes b) do we have to wait for that tuk sound or start our engine before that tuck sound ? c) i own a cultus and that has a automatic choke system so the auto electrician believes i have to wait for that sound and than proceed starting but on the other hand my mechanic said u need to just start your engine with out waiting please enlightened your knowledge on this thanks in advance.

According to rules, U have to w8 for that sound,
Rest is your choice, your car!

[shqamar]

hey camryhybrid thanks for replying i am looking for a more logical answer dude why is that tuk sound coming what happens if we start before that and what happened if we start after that and why that tuck sound comes anyways i guess we need to wait for our more experts to reply .

[Ishtiaq778]

It might be relay sound,which is energized when the switch is on.....
When i start my car, a karrrrrr sound produces and than pressure lights are on. I think it relay

[Caprion_7]

tuk sound comes when car converting petrol to cng after that sound car on cng and before at petrol

[shqamar]

hey ishtiaq and capricon thanks for replying unfortunately guys u are not getting the right point its not when switching on petrol or cng or wiseversa its when u switch your ignition and the light blinks for cng switch and then in a second a tuk sounds comes i guess its a sound that makes us believe car got cng and its ready to start but i am not sure .

[cloud100]

bro if u dont w8 for the tuck sound car would not start cz its the switch sound that converts to either to cng kit or petrol.n its not about the auto choke sys it also comes in mehran n fx etc cars that dn have auto choke. that switch is located in the kit not sure 100% though about the location of the switch but if u open the hood nd turn on the key u'll hear the tuck sound from the kit.

[Retaliator]

must be some relay or something like that in the circuitry. or probably the kit. there are solenoids in it.

[civic_90]

bro that tuk sound is of the primary coil on the cng kit.
that comes when u switch on the ignition switch and then when the sound comes, after that sound, the cng is coming out from the kit to the carburetor or throttle body..........
u hav 2 wait for that sound otherwise, the engine will take too long time to start.............

[cloud100]

ryt bro civic_90 .infact not only it would take long but most of the times it wont start.cz it has happend with me 3times when i was in hurry togo to office.once u try u will have to turn the ignition off atleast for 3-5mins after that u'll hear that tuck sound again and theb u'll be ready to start .

[civic_90]

hmmm
thats the problem..........

[Proverbial_Slang]

Ok, there are two electro-magnetic switches in the CNG system. The smaller one is the petrol cut-off switch and the second one is the primary gas switch inside the CNG kit.

There is a piston inside a cylinder with a spring on top of it which keeps the CNG closed. Once the Kit receives electricity, it activates the electro-magnet and it pulls the piston upwards, allowng the gas to pass by.

The second one is probably the "tuk" sound you hear.

[cloud100]

the upward motion of the piston creats tuk sound when it hits upwards by the pull.

[shqamar]

very well explain guys thanks a junk just to clear that subject more what is auto choke ? i own a cultus and the mechanic was telling me u have a auto choke system but hes unable to explain me what exactly auto choke is and what it does ?

[afnan_88]

btw there is another sound too , which is continously on while u r driving, when ever u accelerate it sounds , like click sound

[shqamar]

hey afnan dude nah i wasnt talking about that continous sound i was talking about a sound that vanished in second and it comes for a second aswell which our experts explained it quiet well . but when car is on petrol that sound wont comes so it must be in cng kit .

[Sharabhi]

@shqamar bhai civic90 is right.

A advise to make the life of engine more.
Wesey bhaijaan agar app apni car ko raat ko park kartey waqt petrol pei park karey aur jab subah start karey toh petrol per jab car warm hojaye toh app usko cng pei convert karlo is u have automatic switch.

Otherwise if u have manual switch which comes in 1998-2000 Year from Stanely Lasbela which is in my charade. In manual switchover its better to conevrt the car on cng while driving. I hope u get it and if someone elaborate and tell in short what iam trying to say.plz. iam not a prfessional BTW. just have a experience of driving for 06 years.

[cloud100]

. An automatic choke system for a carburetor,
comprising: a wax-type temperature sensing section attached to an engine; and an output section providing a connection between the temperature sensing section and a choke valve of the carburetor, and operated to open the choke valve in response to heat receiving operation of the temperature sensing section, wherein the temperature sensing section includes: a bottomed cylindricalhousing attached to the engine with its bottom portion directed to a high-temperature portion of the engine; a bottomed movable cylinder; a stationary piston slidably supported in the movable cylinder and having one end protruding out of the movablecylinder; a wax contained in the movable cylinder in a sealed manner, and causing the movable cylinder and the stationary piston to move relative to each other in an axial direction; and a return spring urging the movable cylinder and the stationarypiston in a direction to compress the wax, the movable cylinder being slidably housed in the housing in a state in which an outer end of the stationary piston abuts against an inner surface of the bottom portion of the housing, the output section beingconnected to the movable cylinder.

[shqamar]

hey sharabi thanks for replying , civic90 aka danish is a professional dude hes almost right always lol and cheers for sharing your observation u are absolutely right aswell i have a 2002 model that comes with a automatic one so when i actually switch my car from petrol to cng all the lights went towards the end than lights goes red and than in few seconds lights will come back and it stays where the cng actual meter is anyways the verdict i am getting from my thread is always wait for few seconds for that tuk sound and than start your car my mechanic told me its better to pump your paddle that helps in case of cng starting but dont ever pump it when car is on petrol otherwise it will make your car over on petrol correct me if i am wrong guys ?

[cloud100]

yup its better to keep the car at petrol at night this preserves half of the engine life.though i dont do it nd still my car is running good but its highly recommended that u stop the car and start the car in the morning on petrol specially in cold weather.in summers MashAllah v have plenty of heat in atmosphere so if stoped and started in the morning on gas wont be makng much of the difference .