sham 1 Report post Posted May 14, 2010 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. Quote Share this post Link to post Share on other sites
driftpunk 0 Report post Posted May 14, 2010 Misfiring ?? please explain. Quote Share this post Link to post Share on other sites
sham 1 Report post Posted May 14, 2010 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. Quote Share this post Link to post Share on other sites
sb-alto 21 Report post Posted May 14, 2010 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 ? Quote Share this post Link to post Share on other sites
driftpunk 0 Report post Posted May 14, 2010 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. Quote Share this post Link to post Share on other sites
NAREN64 0 Report post Posted May 14, 2010 Do you fill Diesel in reputed Bunks. It might be because of adulterated Diesel. Quote Share this post Link to post Share on other sites
sarabjeet 3 Report post Posted May 14, 2010 maybe water is being mixed with fuel or fuel adultration. Take it to Fiat A.S.S or call up their call centre Quote Share this post Link to post Share on other sites
sham 1 Report post Posted May 14, 2010 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.. Quote Share this post Link to post Share on other sites
sb-alto 21 Report post Posted May 14, 2010 Take it to TASS and ask for a check up of the Catcon, Silencer and Manifold. Quote Share this post Link to post Share on other sites
rahulgupta3101 1 Report post Posted May 28, 2010 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.... Quote Share this post Link to post Share on other sites