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2002 BMW 316i non start

Posted By MMS 2/6/2009 5:25:54 PM
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MMS
 Posted 2/6/2009 5:25:54 PM
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Bit of a headache with this one,

Customer drove to work went to come home car wouldnt start, got recovered home, recovery tried to start using jump start. wouldnt start, customer then phoned me. I went out to it battery flat as a pancake and seemed to have gone into eco mode as radio, blowers etc not working.

Replaced battery as customer said he wanted a new one, also fuel low and low fuel warning light on, put in a gallon of unleaded light stilll on but theres fuel in it. checked fuel coming out of valve on rail, plenty there and under pressure.

With igniton on engine off rev counter erratic and whirring noises coming from engine bay, put Texa on it came up with crank and cam sensor faults. Cleared faults, Replaced Crank shaft sensor now rev counter no longer erratic and no faults coming up, still wont start.
Checked for spark all ok. put noid light on injectors and getting steady pulse. checked air intake all ok. turned engine over by hand seems to be compressing ok crank and cam shaft moving synchronised. Checked bonnet switch and bridged it out, still no start. Checked earths all fine.

Maybe misfiring and melted cat so disconnect ex manifold still no start.

Oil level is high and smells of petrol but that could be where its been turned over and not firing.

Central locking all works fine so I presume the immobiliser is ok but not sure wether immobiliser will prevent turnover or allow turnover but block fuel pump. Had it at one point very nearly fired upo so also thought that would indicate not an immobiliser fault.


Anyone think of anything I've missed or come across this before, cos I'm stumped.

Thanks in advance.
2/6/2009 5:31:45 PM by MMS
roadside
 Posted 2/6/2009 5:59:47 PM
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Have you checked cam timing?  Some of these with Hydraulic advance  suffer faulty units .They fail in the advanced position and are ok until you stop the engine .

Always check the basics first !Rolleyes
2/6/2009 6:02:53 PM by roadside
MMS
 Posted 2/6/2009 6:08:57 PM
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Cheers roadside havent checked the timing as its a chain engine and all works in synchro. aren't the hydraulic timing units only fitted to the twin cam engines though?
K And R
 Posted 2/6/2009 6:13:09 PM
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MMS.

Plenty of OK,s but no FACTS to back them up, Like plenty of fuel and under pressure, well what was the pressure ? Compressions seems OK ? do a compression check !

Kev.

"If you dont KNOW how it works, don,t try to test or fix it"

MMS
 Posted 2/7/2009 7:44:34 AM
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KandR I feel that having fuel at the rail and under pressure tells me that the fuel pump is working ok and that the system is getting fuel. What will putting a gauge on it and getting the actual pressure tell me?

manicmotors
 Posted 2/7/2009 2:05:51 PM
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that its getting enough pressure?
Chris Venning
 Posted 2/7/2009 2:15:28 PM
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If you have a cam/crank synchronisation error, you need to check valve timing. Also check the cam sensor, they do fail.

I could give up Stella, but I'm no quitter. Beer Drinker 
scartboy
 Posted 2/7/2009 3:22:47 PM
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Engine code? You'll find it on the little id plate in the engine bay that also has the VIN on it.

Have you had the plugs out? It may be flooded.

Gerard
MMS
 Posted 2/8/2009 6:04:13 AM
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Its a 19 4E1 and no I havent pulled the plugs out yet. its on my "to do" list

Baron since replacing the crank sensor the cam/crank sensor fault has not come back, it also stopped the erratic rev counter needle and whirring noises.

I will check the timing and get a fuel pressure tester( I just thought so long as its getting fuel at the rail the pressure is not that critical unless obviously there was no fuel pressure but there obviously is). maybe ram a bit of ether up its nose and see what that does.

2/8/2009 6:33:45 AM by MMS
rudi
 Posted 2/8/2009 7:09:30 AM
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MMS (08/02/2009)
Its a 19 4E1 and no I havent pulled the plugs out yet. its on my "to do" list

Baron since replacing the crank sensor the cam/crank sensor fault has not come back, it also stopped the erratic rev counter needle and whirring noises.


I bet that you will find the cause of the persistent non starting is flooded engine! 



rudi

www.the-good-garage.com

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