e30 m3 not starting
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Category: Technical & Model Specific Forums
Forum Name: BMW ///M Power
Forum Discription: Ask your BMW M Power Technical Questions here (M1, M2 hybrids, M3, M5 & M6)
URL: http://www.bavarian-board.co.uk/forum_posts.asp?TID=49348
Printed Date: 30-April-2024 at 12:04
Topic: e30 m3 not starting
Posted By: bhups
Subject: e30 m3 not starting
Date Posted: 29-December-2012 at 14:58
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Hi Guys, Having problems with the car,been parked up for a couple of weeks and now it will not start. It turns over but will not fire,checked the plugs and they looked a bit wet as if they were flooded,I am getting spark at the plugs but it looks a bit weak,should this be really bright? Cleaned the plugs and refitted but no go,took the plugs out again and they definitely look flooded! Any advice? Cheers
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Replies:
Posted By: Andrew Rolland
Date Posted: 31-December-2012 at 10:42
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I'm sure Gary (wendy) told me he had the same problem on his E30, the only way he could get flooded plugs to restart was bake them in the oven to dry them out. We were both sober at the time........ ------------- Be exclusive and drive a Petrol 5 Series! Current '13 62 F10 535i MSport Auto Previous '04 04 E60 545i SE Auto '03 53 E60 545i SE Auto (Stolen) '98 S E39 523i SE Auto |
Posted By: Sporty1
Date Posted: 31-December-2012 at 12:24
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You could try to heat the plugs to properly dry them out, either use your kitchen oven or blow torch them and fit them to the car hot and fire up as quickly as possible, or put a new set in there. GSF were selling them very cheap a few years back, not sure what they currently charge, but you want Bosch X5 DTC. I would check the resistance of the crank position sensors to ensure they're within spec, should be 550 ohms +/-10%. Also check the resistance of the cold start sensor (blue) on the coolant rail above the exhaust manifold, cold it should read around 2000 ohms. Also remove the dizzy cap and rotor arm and clean all contact point with a bit of emery paper or similar if there are no obvious issues with them. ------------- 
Sport Evolution Schwarz #043 |
Posted By: Andrew Rolland
Date Posted: 31-December-2012 at 13:51
So I wasn't mistaken then, good stuff. ------------- Be exclusive and drive a Petrol 5 Series! Current '13 62 F10 535i MSport Auto Previous '04 04 E60 545i SE Auto '03 53 E60 545i SE Auto (Stolen) '98 S E39 523i SE Auto |
Sporty1 wrote:Posted By: UweM3
Date Posted: 04-January-2013 at 16:42
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E30 M3 do like to foul the plugs very quickly when the battery is just a little bit low. -- Make sure your plugs are dry'ish -- Charge battery or better use a second FULL battery to support cranking (I would even consider using a second car with a RUNNING engine but you do this at own risk.....) -- Now comes the trick, when cranking use FULL THROTTLE! Yes FULL throttle with a flooded M3 engine. The E30 M3 ECU will richen up the mixture a lot when cold and the throttle depressed. Byt pressing the throttle fully down, you will STOP more fuel to be injected. Just make sure you lift off quick enough when the engine fires up. Try it, as long as there are no faults with the car it will most likely start. ------------- E61 520d, slow and buzzy but my wallet likes the mpg..... |