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guyz, can any1 help me in finding the problem am faing right now. I have baleno, & the issue is that after driving it 4 speed in the range of 120-130 km/h, when i switched off for CNG refill, its very difficult to start the car again & i am facing this problem on the petrol as well. if i just switched off the car & then switched it on the very next moment, then there is no issue, but if i take a break of more than 4-5 mins then i have to give it very very long selfs (starters) to start it again, & specially on the motorway's CNG refills stations, this situation is the worst for any1. i woud really appreciate if any1 can help me in this regard, but plz do help me soon, if any1 has any solution for this problem. & 1 more thing, this only happens only on high speeds & usually not for speeds less than 100km/h
1 Answer
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Gari.pk User 5460 asked on 28 Jul 2010 11:46:12 am
1 Answer 
Rayan - on 28 Jul 2010 11:47:02 amMost probably it is due to vapor lock.
You know why the instructor told you to NEVER turn the engine off at the traffic signal? Because the cooling system would also stop and, for a brief period of time, the engine would go higher than the favorable temperature of combustion (so you have a difficulty starting and have to crank a lot).
However when the engine cools down to a more favorable temperature, starting is a breeze.
In highway traveling, it happens the most in Asr prayer. The prayer in itself is small, and like Zuhr you don't have to eat lunch. Hence when you come back after 6-10 minutes, and the engine won't start, you'd think something's wrong. I remember I used to freak out when as a kid I was accompanying my dad on his journeys. (The sun is setting down and it's the universal time of depression, you are tired and almost feel lost).
The engine is more stressed at high speeds (and for longer periods), that's why the problem only occurs at high speeds. The effect can be minimized with further tuning. Also check out if you're traveling in the direction of wind or against it.
You know why the instructor told you to NEVER turn the engine off at the traffic signal? Because the cooling system would also stop and, for a brief period of time, the engine would go higher than the favorable temperature of combustion (so you have a difficulty starting and have to crank a lot).
However when the engine cools down to a more favorable temperature, starting is a breeze.
In highway traveling, it happens the most in Asr prayer. The prayer in itself is small, and like Zuhr you don't have to eat lunch. Hence when you come back after 6-10 minutes, and the engine won't start, you'd think something's wrong. I remember I used to freak out when as a kid I was accompanying my dad on his journeys. (The sun is setting down and it's the universal time of depression, you are tired and almost feel lost).
The engine is more stressed at high speeds (and for longer periods), that's why the problem only occurs at high speeds. The effect can be minimized with further tuning. Also check out if you're traveling in the direction of wind or against it.
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