Cultus Starting problem

[Hassan1991]

mechanics usually opens the choke permanently....that's there mythology.

[kazim-501]

so what you will recommend me now? As most of the mechanics in my network are suggesting me that its a Intank Fuel Pump problem. So on the one hand, there is a fuel pump and the side is choke. your kind recommendation?

[Hassan1991]

locate the intake fuel pipe. open it and insert it inside the bottle. switch on the ignition. if fuel comes continually. pump is not faulty.
and as you said problem only comes when you start the car after some days and that's when choke came into play it rich the mixture to start the car in cold.
one thing that people usually don't know...that you have to press and release he paddle before start. Reason, the choke will not close until you press the paddle as it is made to work like that. pressing and releasing the paddle is call priming the engine.

[kazim-501]

so the pressing of accelerator paddle is a good step to do on before start up or NOT?
As once before , one of my engine mechanic told that pressing the paddle once or twice is sufficient , but Not more then that. Though, its a good thing as one electrician told me that paddling before start up will make the fuel come quickly.

[kazim-501]

Once a time when the car wasn't get started, I located the intake fuel pipe ( pipe which releases the fuel to carburetor) and opened it. The fuel came out when I tried to start the car. In two or three attempts , the car was started and the fuel came out. But before opening the pipe, the was wasn't get started by several attempts. Hassan bhai your kind thoughts about it?

[Hassan1991]

It can be due to vacuum building inside the tank. There's any noise when you open the tank cover for refill?
Yes it is good step. But pressing and releasing not continuously pressing the paddle. If you continuously presses the paddle then there's no reason for a choke. Just press it once and let go. Choke will close by this attemp.

[kazim-501]

i dont exactly remember of noise when opened for refill. is that noise sound large or short by the way?

[kazim-501]

so dear now, what should I say to Mechanic regarding starting problem? How I describe him?

[Hassan1991]

Sound will be like air sucking inside.
First ask him to check the choke that its working or not.
Then ask him to check the tank vaccum line.

[kazim-501]

what results I can expect from the tank vacuum line if he checks?

[kazim-501]

whats this air sucking sound inside depicts if it is heard?

[Hassan1991]

If sufficient air is not provided inside the tank when evaporation take place then vacuum builds inside the tank and this vacuum is strong enough that it don't allow even fuel pump to pull the petrol. When you opens the tank cover air sucks inside. Awaz aesi hoti hai jesa air leak ho rahi.

[maxpain007]

Get ur self new spark plugs ... and there is a petrol shut off valve screwed into the carburetor .. a very inexpenisve part .. get it .. and then when u turn on the switch pump the accelerator pedal a 3 - 4 times and give it a start up .. hopefully u will have no problems in startup now ...

[kazim-501]

okay brother. thanks alot for your help.

[ZainMahdi]

You still haven't made it clear if the choke is working or not.

I'm assuming you're using the proper cold-start method for petrol:

1- press accelerator slightly (about 10-20%)
2- keeping the accelerator pressed to the same level, start the car
3- as soon as the engine "catches on", release the accelerator

The RPM should be between 1500-2000 at this point, rising slightly over the next few minutes. After driving for 2-3 kilometers 'pump' the accelerator (quickly stomp and release) once; the RPM will settle at the proper level, which is 800-900 for this car.

If the car does not idle at 1500-2000 on cold start, and does not settle to <1000 after one pump, then the choke is not working. Get it fixed.

[kazim-501]

@Hassan1991 @ZainMahdi and All Rest of the Guys I need your Attention!!!

Yesterday I sent whole day among different Mechanics includes Electricians and Engine Mechanics, multiple one! ( I didnt go to them randomly , I knew them all ). and gone through a long discussion.

Conclusion of the day was;

1. One opened the top of the carburetor and checked the choke. It was automatically in work mode, means Open and Closing . He said its okay. And your fuel is coming from the tank at a right pressure so so there is no wrong with the pump. There can be carby fault.

2. The second engine mechanic said that there is a problem with the Butterfly, its looking a bit loose. He said come to the next day and we will open the whole carby and will send the butterfly to the Kharaad" and rest will be General service and settling of carby.Your will be afterwards fine.

3. The third mechanic checked and said that " your choke is working absolutely fine, your car carby is fine. Pump is good. But the fault is inside tappets. I will open the head and will work on Tappets. Tappets fixing will be done by me and will send to Kharaad for his concerned work ." 3-4 hours time frame he further said.

so dear brothers what should I do Now? its really a worry situation for Me. I gets a gut feeling that head and tappets of my car are fine, problem is somewhere else.
Kindly provide your Feedback . I am waiting. and would be Immensely Thank ful to All of you

[Hassan1991]

i don't think it's butterfly. as there's no missing in drive.
cultus have hydraulic tappet. what he said about tappets whats wrong with them?

[ZainMahdi]

Ok, so the choke is ruled out.

Before messing around with the carburetor or tappets, make sure that the ignition system is in peak condition first. Whether it is the culprit or not, it will make quite a difference in performance - old carby cars usually have poorly maintained ignition systems. Carburetor tuning requires a perfectly working ignition system anyways.

As for the tappets, does it make a noticeable 'tick tick'' sound, especially during idle?

[brownrose78]

@kazim-501
What is your oil usage history? Which oil and API rating, u r pouring inside this?

Carburetor issue as told by 2 mechanics so think over it too.

Tappet setting is small job. No worries

[kazim-501]

He said that car usage normally made the tappets to move from their accurate position. I will turn them back to their Actual position by work on it... thats the simple logic he gave me .
He further said that your car is lowering the Engine oil. I replied that how is it possible? When ever I checked it through the guage it used to be on the same level ( Means at Full Level). I never find it low . He was speechless then. and even car's engine oil use to be Remain at Full level when the oil reaches replacement time.