j
Member
Registered: 20th Jan 07
Location: Canterbury, Kent
User status: Offline
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Lately, usually when changing from 2nd to 3rd, every now and then my corsa will backfire and loose power until i release the accelerator any ideas what this could be? Maybe some sort of blockage or something? Its a 1.2 8v for those who dont already know. Cheers 
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xtremewheels
Member
Registered: 3rd Sep 06
Location: Nottingham
User status: Offline
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Backfire is normaly caused by unburnt fuel i believe, over fueling?
Other than that im not to sure.
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j
Member
Registered: 20th Jan 07
Location: Canterbury, Kent
User status: Offline
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Yea thats what i thought, whats the best thing to do about it and what causes overfueling?
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craig_s
Member
Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
User status: Offline
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does it do it when accelerating?if it does check plugs and leads first then check coil pack and if all that fails its gunna be a sensor down.i sthe ecu light on?
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j
Member
Registered: 20th Jan 07
Location: Canterbury, Kent
User status: Offline
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Only when changing gear, when i accelerate after changing gear, doesnt ever do it when just driving along at a constant speed. Not sure if the ECU light is on, maybe it needs new plugs and leads, dont think theyve been changed for a while will have to get some and see if it gets any better. Did it 3 times in 2 days last week but hasnt done it since.
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craig_s
Member
Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
User status: Offline
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it sound like plugs or leads and they are the cheapest thing to do.whens the last time you took them out and checked them?
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j
Member
Registered: 20th Jan 07
Location: Canterbury, Kent
User status: Offline
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To be honest iv only had the car for 5-6 months and havnt checked them since buying it. Did buy some plugs but they were the wrong ones, stupid place obviously didnt listen to what model i told them as they gave me the wrong ones. Will replcae them when i get paid and see if it makes a difference
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craig_s
Member
Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
User status: Offline
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when you takethem out have a look at them.as they could tell you what the problm is.do you have a haynes manual?
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j
Member
Registered: 20th Jan 07
Location: Canterbury, Kent
User status: Offline
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No mate i havnt got the manual, only the max power one which isnt alo of use lol thanks for your help bud
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craig_s
Member
Registered: 5th Mar 06
Location: Birmingham Drives: mk4 astra gsi
User status: Offline
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is it the corsa modifying one?you need ones with the spark plug chart in hat will tell you how your engine is running.do a search on the net
[Edited on 04-06-2007 by sri power]
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j
Member
Registered: 20th Jan 07
Location: Canterbury, Kent
User status: Offline
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Yea its the modifying one so not really any use, will do a search cheers mate
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