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Old 05-02-2013, 08:29 AM
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Location: hereford uk
Car: '99 E36 318 tourer 8valve
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Default no start after top end rebuild

Hi,
I have a no start, after rebuilding the top end of my '99 318i e36 tourer, and would welcome any advice please! this is the m43 b18 4cy sohc 8 valve eng. The engine runs for a couple of seconds then dies. I'm getting fuel to the valve, and have bled' by switching the ignition on and off three times then pressing the valve. The plugs are wet so I assume I'm getting fuel to the chambers. The connectors in the harness under the manifold all went to the correct place! so I am at a loss to know why it will not run. Nothing else was changed apart from the starter motor. I'm okay on mechanics but my knowledge is limited on diagnostics
Thanks mart37


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Old 05-31-2013, 09:26 AM
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First double check you connected back all the sensors, check all the leads under the inlet manifold so they are all correctly fitted. If you have extra motor then replaced the starter motor. If still your problem will not resolve then take your car to certified BMW Service & Repair center. With auto diagnosis they will tell you the problem or visit [Only for registered users... ]
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Old 06-29-2013, 05:49 PM
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You must check your valve timing. Pin in flywheel
Make sure marks line up on cam. Make sure u put
Cam sensor plate back correct. Check fuel pressure
With pressure gauge, make sure no air leaks on
Manifold, also could be flooding. Can take plugs out
Blow em dry if wet. And blow compressed air into
Cylinders to dry em out.
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Old 07-23-2013, 12:29 AM
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I'm not familiar with the M43. But I have rebuilt a few M42's and I know that it is possible to mix up the Cam sensor and Crank sensor. That would cause the symptom you're having. They are 3 pin bosch style connectors, follow them back from the head and block, switch them and see what happens.

If you were out of timing by a large amount, it would either cause piston to valve contact or damage to the engine. But if what I mentioned before doesn't work, check timing.

Sam
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