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Old 20th January 2008, 19:33   #16
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when you are at a light keep it in ACC. In ON mode you will have more current draw.
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Old 20th January 2008, 22:02   #17
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when you are at a light keep it in ACC. In ON mode you will have more current draw.
Ok. Does this apply to indian carburetted bikes too (regarding the amount of current drawn)? Since they run on carbs, there will be no wastage of fuel I presume.

Ofcourse, there is no ACC position in bikes.

Last edited by hyper123 : 20th January 2008 at 22:03.
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Old 20th January 2008, 22:16   #18
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My Santro manual clearly states that the ACC position should be used. Keeping ignition on can damage the electrical components.
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Old 21st January 2008, 12:10   #19
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I'm thoroughly confused after reading this thread. What I do is to switch off the engine if the wait is for longer than a minute (in winter, when I do not use the AC much).
In summers, I do not switch off unless the wait is for longer than 90 seconds, when I travel alone. With family, I don't switch off as they complain of losing the AC effect.
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Old 21st January 2008, 16:25   #20
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In my NHC, when I move my key to the Ignition position (but don't actually start the car), I hear the fuel pump humm for 3 seconds and then it shuts off.

So nothing to worry. Modern days ECU's manage things very well.
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Old 21st January 2008, 18:17   #21
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Quote:
Originally Posted by vnabhi View Post
I'm thoroughly confused after reading this thread. What I do is to switch off the engine if the wait is for longer than a minute (in winter, when I do not use the AC much).
In summers, I do not switch off unless the wait is for longer than 90 seconds, when I travel alone. With family, I don't switch off as they complain of losing the AC effect.
You are doing it correct, dont be confused
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Old 21st January 2008, 19:12   #22
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Quote:
Originally Posted by anandpadhye View Post
In my NHC, when I move my key to the Ignition position (but don't actually start the car), I hear the fuel pump humm for 3 seconds and then it shuts off.
So nothing to worry. Modern days ECU's manage things very well.
Thats the pump priming sound. The pump fills its casing with fuel before its ready to start pumping so there is no lag in fuel delivery. I usually start after the sound stops.

I do not think the fuel is injected before the engine is cranked. So no chance for fuel wastage or overflow like in a Carb vehicle.
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Old 21st January 2008, 19:41   #23
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I do not think the fuel is injected before the engine is cranked. So no chance for fuel wastage or overflow like in a Carb vehicle.
I did not quite understand that part. How does fuel wastage occur in carb vehicles?
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Old 21st January 2008, 20:39   #24
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Quote:
Originally Posted by hyper123 View Post
I did not quite understand that part. How does fuel wastage occur in carb vehicles?
I have seen fuel dripping out my RX-100 carb maybe due to a faulty float. I had kept the fuel "on" overnight. It has a tube that lets out fuel. Not sure if this happens in cars.

Last edited by mail4ajo : 21st January 2008 at 20:42.
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Old 21st January 2008, 20:59   #25
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It "can" happen if carbs are out of shape/tune, and the phenomenon is called flooding. Can be observed by petrol leak around the packing area / wetness inside the butterfly area. But generally if all well, shouldnt flood even if you leave the ignition ON for sometime. Especially since carb cars also have a return circuit which will divert back the excess fuel to tank.

You can quote the above as one of the advantages of moving to Fuel injected system since the whole system is leak proof to a great extend.
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Old 21st January 2008, 21:13   #26
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Quote:
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It "can" happen if carbs are out of shape/tune, and the phenomenon is called flooding.
I think in my case, the floats would have worn out and caused the flooding and ultimately draining out. Never bothered to change the float. Petrol was cheap at that time....
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Old 21st January 2008, 21:46   #27
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hey if its bike (and you still have it), just clean the carb, dust and grime on the float pin can cause overflow, and even replacing float pin is a simple and cheap job
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Old 22nd January 2008, 10:57   #28
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Ah, ok got it. I always shut off the pet cock whenever I park, so no problems.
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Old 22nd January 2008, 17:12   #29
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Depends from car to car. Like in the rocam, the pump starts and shuts off after a few seconds. No damage here,but in newer engines like the DDiS,the pump sound doesn't stop somehow. On carb vehicles,the fuel pump would be running and running,hence leading to flooding.

cya
A
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Old 22nd January 2008, 20:17   #30
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i think there are things like the pressure that needs to be maintained and more which govern the actual reasoning wrt cut off
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