Punto misfiring.. urgent help pls.

[sham 1]

Hi all,

Off-late I found out that my punto 1.3(mjt) started to misfire.

It does not occur always, i've been observing from the past 2 months and its happened about 3-4 times, till date.

I just snubbed it away until it happened again yesterday..

Is it a sign of some major component failing or something else...

I dont feel the misfire during the initial cranking.

Its only when I drive.

Please help... Its kinda scaring me as its a new car.

[driftpunk 0]

Misfiring ?? please explain.

[sham 1]

While im driving, sometimes i can hear a sound like the one that comes out of a compressed water gun as soon as its switched on.

Something like "ptach" ..

I can hear it coming from the silencer.

[sb-alto 21]

That is not misfiring I suppose.

 Is the car jerking or is the engine halting when this happens ? Is there any other change in drive when this happens ? 

[driftpunk 0]

Maybe there's some kind of pressure building up in the silencer part. Maybe its blocked. Go to the agency and get it checked up. 

[NAREN64 0]

Do you fill Diesel in reputed Bunks. It might be because of adulterated Diesel.

[sarabjeet 3]

maybe water is being mixed with fuel or fuel adultration. Take it to Fiat A.S.S or call up their call centre

[sham 1]

There is no change in the way the car drives at the moment when i hear that sound.. I will be driving as usual and all of a sudden i hear that noise and its gone..

No jerk nothing ... the car feels precise.

It does not even come to a halt or switch off.

And with respect to bunks i can only say that I stick to just one petrol bunk for refills.Have been going there from the past 4 times.. (on each refill i clock about 370km for half tank).

Reputed or not.. im not too sure..

[sb-alto 21]

Take it to TASS and ask for a check up of the Catcon, Silencer and Manifold.

[rahulgupta3101 1]

If it's really the case of engine misfiring, you could also check-up your injectors which could be clogged/jammed/dirt-filled. My ikon started misfiring after 2 yrs of purchasing it and the issue got resolved by just having the injectors cleaned out.

Since your car is almost new, this diagnose does not seem to be dot-on applicable, but is worth giving a try as injectors could get clogged due to bad quality of fuel being used....