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Old 13th July 2014, 15:45   #271
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Default Re: Tata Nano Twist XT : Driven

@kkg - thanks for the suggestions. For the first suggestion, an old battery could not be the reason as I changed the battery last month, but it still continues to be slow cranking.

The second point on the clutch could very well be the case. I shall look into it.

Thanks once again for your suggestions.
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Old 13th July 2014, 17:16   #272
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Quote:
Originally Posted by jayeshgnath View Post
Hello all!


The engine fails to fire up in the first attempt, after it has been turned off. This is more prominent when it is stopped at traffic signals . Requires a second or sometimes a third attempt to fire the engine.
I have the same issue on my 2012 nano. Haven't cracked it yet.they keep checking the starter motors wiring and say everything is ok.Until they find a solution, I have to keep updating this as an issue during service.You can check the nano thread also for any clues.
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Old 16th July 2014, 16:03   #273
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Default Re: Tata Nano Twist XT : Driven

Thank you Cuatro!

Agree, it does not start in about 2-3 seconds as it should and rather it takes up more time. The longer cranking scenario occurs sometimes and only when the engine is warmed up after running some distance.
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Old 16th July 2014, 16:39   #274
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Sports cars with rear engines have air vents at the sides of the car to direct the air flow for cooling the engine. Is such a vent available in the nano? How effectively would it cool the engine of a running car with air vents only on the rear bumper? (I am seeing only tiny holes for side vents).
Any premature heating issues with the Nano (turning the radiator fan ON)?

Last edited by jinojohnt : 16th July 2014 at 16:43.
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Old 16th July 2014, 18:06   #275
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^^^^^^^^^^^

"YES" to your 1st question.
"POORLY" to your 2nd question.
"NO" to your 3rd question.
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Old 18th July 2014, 12:39   #276
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Default Re: Tata Nano Twist XT : Driven

Hello all Twist Owners,

Regarding the cranking issue, i've noticed that this happens when the vehicle is standing at an incline during the cranking. It takes a couple of attempts for the engine to fire up. The other points mentioned above like engine warming, could not be replicated.

Also after the engine starts, there is a loud "thaadum"( the best onomatopoeic i could get) noise. Is this normal?

Off late I'm having issues when it does not slot into 1st gear. This happens at the traffic lights and i've to rev the engine in neutral and try again. The car had done only 800 kms till date and will top my grouse at the service station.

On the lighter side, I've been looking for a pen drive which befits the name ad finally managed to find one. I got this at Amazon for Rs.299. The advantage is that no one will be able to see that there is a USB drive attached at the first glance.

Name:  sandisk.jpg
Views: 1199
Size:  3.2 KB

Also i did get a Poppy Nano, umbrella to go with the car.

Name:  poppy.jpg
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Size:  2.6 KB
The images are not actual photos but resemble the model i bought. Picture courtesy the internet.

Cheers

Last edited by kutoos : 18th July 2014 at 12:47. Reason: Mentioning Copyright
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Old 19th July 2014, 00:14   #277
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Default Re: Tata Nano Twist XT : Driven

^^^^^^^^^^^^^^^^^^^
You have an extremely cool temperament I must say!

Your 1 month old car wont crank properly on slopes, your engine is making explosive sounds and you went out and bought an umbrella to match your car?!?!?!

Bro, rush to concorde motors and look into that engine sound .......
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Old 19th July 2014, 16:42   #278
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Default Re: Tata Nano Twist XT : Driven

The usual reason for such starting problems is low fuel, leading to pump starvation as the fuel easily moves out of the containment vessel and moves to the sides. In the Nano, the problem may be aggravated due to a very flat and shallow tank design (to fit under the floor along the length of the vehicle. Try keeping a bit more fuel in the tank. Also the explosive sound is probably due to the engine misfiring with inconsistent fuel delivery in the first few revolutions.
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Old 22nd July 2014, 10:02   #279
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Quote:
Originally Posted by john doe View Post
^^^^^^^^^^^^^^^^^^^
You have an extremely cool temperament I must say!

Your 1 month old car wont crank properly on slopes, your engine is making explosive sounds and you went out and bought an umbrella to match your car?!?!?!

Bro, rush to concorde motors and look into that engine sound .......
@John Doe : I like your style. Thanks for the compliment. The umbrella is a must in case i get stranded

Jokes apart, a few corrections: While cranking on the slopes, it does start but dies away. This happens even when the fuel tank is full. The ASS wants to keep the car for a few days to observe this phenomenon, but i'm not able to give it due to work exigencies.

As regards the noise from the engine, It's comes on when the engine fires up. I'll demo it to the ASS this Saturday and update on their findings.

Cheers.
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Old 22nd July 2014, 10:05   #280
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Originally Posted by aditya79india View Post
The usual reason for such starting problems is low fuel, leading to pump starvation.
@aditya79india: Thanks for the reply. My car never goes below the halfway mark and i always refuel when it is 45-50% full. I've spoken about this to the TATA ASS @Concorde and they have requested to keep the vehicle for a couple of days to observe, which i cant at this time. Planning to take it for first service on Saturday and hopefully will get a resolution for the same.
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Old 22nd July 2014, 10:11   #281
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Quote:
Originally Posted by kutoos View Post
@John Doe : I like your style. Thanks for the compliment. The umbrella is a must in case i get stranded



Jokes apart, a few corrections: While cranking on the slopes, it does start but dies away. This happens even when the fuel tank is full. The ASS wants to keep the car for a few days to observe this phenomenon, but i'm not able to give it due to work exigencies.



As regards the noise from the engine, It's comes on when the engine fires up. I'll demo it to the ASS this Saturday and update on their findings.



Cheers.


Just a quick question - does this happen every time you crank or when you have kept the engine off for less than 15 mins. If that is the case it could be because of vapour lock. The Sound you mentioned also happens in such cases.
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Old 22nd July 2014, 10:21   #282
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Default Re: Tata Nano Twist XT : Driven

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Originally Posted by torquecurve View Post
Just a quick question - does this happen every time you crank or when you have kept the engine off for less than 15 mins. If that is the case it could be because of vapour lock. The Sound you mentioned also happens in such cases.
This happens all the time. In the morning when it is started for the first time and the times when i switch off /on at traffic lights.

Is this vapor lock normal or will this harm the engine in any way? pardon my ignorance. Should i refrain from switching off at traffic lights? Typically i switch off when the counter exceeds 45 seconds or more.

Cheers
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Old 22nd July 2014, 20:49   #283
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Originally Posted by kutoos View Post
This happens all the time. In the morning when it is started for the first time and the times when i switch off /on at traffic lights.



Is this vapor lock normal or will this harm the engine in any way? pardon my ignorance. Should i refrain from switching off at traffic lights? Typically i switch off when the counter exceeds 45 seconds or more.



Cheers

The more I think about this the more it sounds to me like vapour lock. The not cranking on slopes could also be due to this. It typically happens when the mixture is too lean or your spark plug (s) is faulty. Can you ask someone to start the car with you watching from the rear? If the vibration is high could indicate a spark plug fault on one of the two cylinders. If the car settles after about a minute it could be due to the coil not providing enough juice to the spark plug or the spark plug is faulty ( needs more voltage) and runs fine with the alternator supplying current (~ 13.5v compared to 12v of battery). Remember the initial cranking is supplied by battery and typically switches over to alt after about a minute. ( battery charge recovered and then direct to line).

Vapour lock doesn't damage the engine. But typically shouldn't happen in a well tuned engine. So don't worry. It is not a big issue.

Last edited by torquecurve : 22nd July 2014 at 20:57.
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Old 22nd July 2014, 21:58   #284
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Missed the cutoff.

One more point - if it is shutting off after a minute or two on slopes it is a feed line issue ( faulty fuel pump, gunk in fuel line, etc. ) which all could lead to lean running engine which leads to airlock and the related issues.
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Old 22nd July 2014, 23:48   #285
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Quote:
Originally Posted by kutoos View Post
This happens all the time.
Every day you delay going to the A.S.S. is a day of the 4 year warranty that you have wasted.
The goal for the smart Nano owner is to have every critical part changed under warranty .
Your time for enjoying the "Great Tata Warranty" begins now......
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