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Author when u start a car............
Marc
Member

Registered: 11th Aug 02
Location: York
User status: Offline
20th Mar 09 at 22:29   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Andrew
Automatic chock pushing more fuel through.

Check you out Andrew.
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
User status: Offline
20th Mar 09 at 22:32   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Firestate88
quote:
Originally posted by Andrew
Automatic chock pushing more fuel through.



EFI cars dont have chokes.
Baskey
Member

Registered: 31st May 06
User status: Offline
20th Mar 09 at 22:59   View User's Profile U2U Member Reply With Quote

your engine is adjusting the mixture to composate for being cold. Same principle as a choke

[Edited on 20-03-2009 by Baskey]
Tappits
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Registered: 25th Mar 05
Location: Rotherham
User status: Offline
20th Mar 09 at 23:45   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by BarnshaW
why does it rev high for the first min or two? like revs at 1.2k rpm then dies down to 800rpm? why do engines do this?


A system for enriching the air-fuel mixture in a cold automotive engine when the accelerator is first depressed; the choke plate opens automatically when the engine achieves normal operating temperature.

or in laymans terms its a stealth tax so you use more fuel for the 1st 2 mins (when its most uneconomical)

DizzyRebel
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Registered: 2nd Jan 09
Location: Lincoln
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20th Mar 09 at 23:51   View User's Profile U2U Member Reply With Quote

fast idle, to get the engine up to temp quickly and stop it from stalling. the ecu sense that the engine is cold and adjusts the idle control valve (stepper motor) to suit and the enginge idles accordingly.
SR91
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Registered: 21st Jun 08
Location: Lancashire.
User status: Offline
20th Mar 09 at 23:55   View User's Profile U2U Member Reply With Quote

More internet warrior battles please?
sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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21st Mar 09 at 00:47   View User's Profile U2U Member Reply With Quote

chokes don't add more fuel they decrease the amount of air going in so the mixture is richened (carbs)
EFI cars have the higher revs to get the oil pressure up and to heat the car up faster, probably add more fuel as well as there is no choke.
BluKoo
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Registered: 8th Apr 02
Location: Stonehaven (Scotland)
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21st Mar 09 at 05:48   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by John G
quote:
Originally posted by BarnshaW
quote:
Originally posted by CorSRi_BT
to heat the engine up and let the hamster get into its rythem.


If your going to try and be a twat and give stupid replies on my thread then at least learn to spell properly.


Do you take roids


Its funny. I seem to remember this point being made before .

Barndoor, you do seem to have quite a short temper/fuse.
Either that or you really need a sense of humour transplant. Lighten up, its the internet.
Shell
Premium Member

Registered: 14th Oct 08
User status: Offline
21st Mar 09 at 15:04   View Garage View User's Profile U2U Member Reply With Quote

Tehehe. I giggled at the thought of a wee hamster powering my car.
steven_r2008
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Registered: 23rd May 08
Location: Nottingham
User status: Offline
21st Mar 09 at 16:23   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by BarnshaW
quote:
Originally posted by CorSRi_BT
to heat the engine up and let the hamster get into its rythem.


If your going to try and be a twat and give stupid replies on my thread then at least learn to spell properly.


personaly it put a smile on my face when i read the comment about a hamster why dont you just lighten up a little, you dont see everybody else on here explodin into rage at the smallest of things have a nice day

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