Crosy
Member
Registered: 1st Mar 08
User status: Offline
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I have a Corsa B 1.2 8v 1995 that since using fuel treatment in, doesnt start from cold...
I put 300ml of treatment to around 35L fuel (should have put in with 45L as reccommended, but didnt)
Anyway...When you turn the key, the starter motor spins, but it sounds like theres no compression as it turns really quick.
There is a spark, but when Ive had a look at the plugs in the past, they are all wet and some are black (overfuelling?)
Ive taken the box that sits over the injector/carb and opened the throttle, looked down into it and theres a pool of petrol
Ive done a paperclip test which showed up no problems...done with just ignition on, not running car.
When it does run...does randomly start now and again...it runs fine apart from a noisy water pump. Sometimes it runs a bit fast which would suggest the auto choke is sticking on or maybe the idle control valve. When I get it running, I can use it through the day, stopping it and starting it here and there.
Ive been told these symptoms are a Crank Sensor? ...where is this located on the 1.2 8v please?
In troubleshooting so far, Ive changed the plugs and leads, dizzy cap and rotor arm...changed all these as part of a service
Any help appreciated as the car has been doing this for a month and is really unreliable now...my boss is kicking my ass!
[Edited on 04-03-2008 by Crosy]
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Torsa g
Member
Registered: 20th Sep 07
Location: Tamworth. Rides: An OSTRIDGE
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do these run crank sensors
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VegasPhil
Premium Member
Registered: 16th Jan 05
Location: Fareham, Hants Drives: Octavia VRS
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I'd run the fuel out and put some V-Power/BP Ultimate in it. It's clearly not liking the fuel additive you've given it if it's only started doing it since then...
Corsa 2.0 16v Vegas - Sold
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Crosy
Member
Registered: 1st Mar 08
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I thought putting higher ron fuel in a car as low powered as this would royally fcuk it up...would just putting standard petrol in do the job? ...perhaps a topup would weaken the mixture of additive I have in there now?
[Edited on 04-03-2008 by Crosy]
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johnhara1
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Registered: 19th Oct 06
Location: Newcastle upon Tyne
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What treatment did you put in?
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Crosy
Member
Registered: 1st Mar 08
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Redex...
I have it starting at the moment, and its running well...as it should.
Ive put a can of unleaded in to try and weaken the mixture left in there, but who knows if it will start tomorrow.
Is there a service manual or troubleshooting guide I can download somewhere? ...would the EPC give me any troubleshooting info?
[Edited on 04-03-2008 by Crosy]
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Crosy
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Registered: 1st Mar 08
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Is there a crankshaft sensor on the 1.2 8v then as Torsa G has asked?
If there is and there was a problem with it...wouldnt I get a ECU fault reading back from the clip test?
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swedge
Member
Registered: 3rd Sep 07
Location: Hawick,scotland drives: 1.4 sri corsa
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quote:
Originally posted by Crosy
Is there a crankshaft sensor on the 1.2 8v then as Torsa G has asked?
If there is and there was a problem with it...wouldnt I get a ECU fault reading back from the clip test?
yeah you would
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swedge
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Registered: 3rd Sep 07
Location: Hawick,scotland drives: 1.4 sri corsa
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you could always try having a look at it and see if its sitting correctly
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swedge
Member
Registered: 3rd Sep 07
Location: Hawick,scotland drives: 1.4 sri corsa
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just incase this is what your looking for
old one left new one right
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Crosy
Member
Registered: 1st Mar 08
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...i cant find anything that looks like that on the engine
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swedge
Member
Registered: 3rd Sep 07
Location: Hawick,scotland drives: 1.4 sri corsa
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bottom left of engine if ure looking at it, right beside the crank
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Crosy
Member
Registered: 1st Mar 08
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There is a sensor there...it has a single blue wire connected to it...but the guage of the cable or the point where the cable connected to the sensor doesnt look like either of those...
It started pretty much first time this morning, so will leave it the rest of the day and try again later...now Ive put fresh petrol in, the mixture may be a little weaker??
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VegasPhil
Premium Member
Registered: 16th Jan 05
Location: Fareham, Hants Drives: Octavia VRS
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Def sounds like it didn't like that additive 
Corsa 2.0 16v Vegas - Sold
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Crosy
Member
Registered: 1st Mar 08
User status: Offline
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Well its been starting on the button every day since the 5th...only time will tell now (and a trip back and forth to work lol)
...cheers for all your suggestions 
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Mark B
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Registered: 15th Mar 07
Location: Galston, East Ayrshire
User status: Offline
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1.2 8v doesnt have a crankshaft sensor
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