Pls..Pls Help Me.. I'm getting mad

[aamirhussain75]

I have a Charade 86 Model and I'm in deep trouble for the last two months since I decided to run it on Petrol. My car starts well on petrol and after running a few KM it gets stopped then I start it again after 1 min and it runs fine again a few KM and stopped.. Whereas on CNG it runs perfectly without any missing.

In last two months my mechanic did the following to solve the prob:

1. Clean the fuel tank (even two times) as it was rusty.
2. Clean the pipes coming from tank to carbo.
3. Clean / service the carborator.
4. Change the fuel pump.
5. change the fuel filter.

After taking all above measures my problem is still there and I'm really disheart
now. Could you guys help me to solve this myth. What should I do now...

Pls....help me

[istafa111]

Get the timing checked...

[aamirhussain75]

Its also done today but in vain

[mehrozniazi1]

after how long you have converted it on petrol..plus how long it has been running on CNG

[aamirhussain75]

Almost after 1 year. For the last 2-3 years it was running on CNG. I've recently overhauled its engine too and being completing running.

[Valhalla]

Did you get your vacuum pipes checked? Could be a vacuum leak.

Did you replace the carburetor when engine was rebuilt. Maybe running it on CNG all those years dried it up beyond repair. Might need to replace if that's the case

[Sharo53]

get your all pipes clumped..
what sort of pump r u using? electric or manual?
if manual then chines(850rs wala) or original(1200rs wala)??

[mubeenshahid]

get it checked

[aamirhussain75]

My mechanic recently serviced the carborator and as per him its very much fine.

During all this problem I've observed that the petrol supply gets stuck somewhere between fuel filter and input of carborator, means fuel is not been injecting to carbo. I've checked this immediately at problem time by unplugging the petrol pipe connected with the input of carborator, there was not petrol but the strange thing is after ejecting this pipe within 30-40 secs fuel automatically comes up. I plugged it again and car start but turned off after running few miles.

I'd doubt that tank is taking some air from outside but after verification it also found cleared. I don't know which thing is blocking the supply of fuel to carb as between tank and carborator there is only a fule pipe, one fuel filter and CNG cutout only. Pipe is not chocked and filter i've already changed twice to thrice but mystery is still there....

[aamirhussain75]

Hi Sharo53: previously I was using electrical pump but my mechanic was not satisfied with that so today I've replaced it with manual one, I got it for Rs900 (good one). I does not seems to be the pump problem as the car behavior with both pumps is 100% same.

[ShakeelAutos]

Hi Sharo53: previously I was using electrical pump but my mechanic was not satisfied with that so today I've replaced it with manual one, I got it for Rs900 (good one). I does not seems to be the pump problem as the car behavior with both pumps is 100% same.

Good luck with your restoration of car with petrol fuel.
If you have changed all the necessary equipment and installed correctly a full tank of petrol should flow freely in through your pump to the engine.

Try to clear up gas in car and shut-off gas valve to restrict flow of gas to chamber. Ensure proper vacum is created in petrol filter installation. If all equipment is functioning correctly there is no reason for it not to work correctly.

Please post your solution once you get it solved, hopefully you will.

[Sharo53]

yr actually ma b apni charade85 ko petrol pa convert karnay k liay bht khuaar hoa tha kafi kuch karnay k baad ab gari bilkul perfect ha is liay thori to help kar he sakta hon..
first of all disconnect the pipe from the input side of the fuel pump and try to suck the petrol through mouth if u feel it freely flowing like pepsi in straw...then the line from the tank to pump is fine and the problem is fuel pump...
did u save the gennion fuel pump which you removed from the engine?

[askai37]

plz direct karo pipe ko i mean cng butterfly hata kar dekho there is a device in which both cng and patrol pipes truncated and the output goes to carburator

[sinner__]

y dont u try one thing from my side as iv experienced it in my car ! atleast put half / full petrol in ur tank so that there is enuf petrol in ur car and then try ! the logic is that when petrol is less in tank then wen u take turna the petrol slides to one side and fuel pump has decrease of petrol in its area of suckshun ! then when the car is straight the fuel come to its place and after some time fuel pump withdrws the fuel ! so i think thats y ur car engin stops for some time ! if this is the problem then tell me will help u further in it ! also try ur car on a strait road for some time without brakes as braking makes the fuel come on front of the tank ! i dont know where is the pump or the pipe located in ur tank ! did u understand my point ?

[nmshaikh]

One way to go about it is to work our way backward. I'd say hook up a gallon of petrol directly to the input of the fuel pump - bypassing the fuel shut off switch of the CNG kit and fuel filter. The fuel would be sucked by the pump from the gallon and pumped directly into the carb. If the engine does not stall then your problem lies between the tank and the fuel pump.

If that is the case, take your car to a less busy puncture wala's shop. They usually have an old tire/tube nozzle that would fit over the fuel pipe. Open the fuel cap / lid and blow pressuried air thru the pipe so if there is any debris/ 'kachra' it returns to the tank. After this treatment the engine should run longer before it dies. (the tank may have been cleaned but the 'kachra' in the fuel line may be blocking the fuel flow.)

Please make sure that no one is smoking while this is being done. The fumes from the tank can easily ignite when the pressurized air is pumped thru the fuel line into the tank.

Safety first. Always!

[nfssaad]

manual fuel pump will fail if run on cng for extended time periods..

i have been using a mitsubishi electrical pump for a long time now after the manual pump dried up.

no problems so far..
i start and shut down car on petrol each day

[afarooqi]

i am suspecting problem in vacuum lines.

[irfansiddique]

Goto any other mechanic for diagnostics.

[kaokabm]

Try another fuel pump. The one you have installed may be not of good quality.

[nadeem5476]

take some petrol in the can and give supply to your carby from that petrol can with a help of a simple pipe and note if there is any change in the behavior of your car ? if not then for sure your pipes from the tank and lines are ok and fuel pump too . then you will need to check the carby itself. to chk the carby first thing to chk the return valve , just plug out the pipe which is attached as a returned fuel line , start the engine and chk if there is ample amount of petrol going back from this valve ? if yes , ur returned valve is also fine . Hope u will find some or atleast one culprit soon . do update us.