Mercedes Benz - starting problems

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Fri 5 Oct 2007 18:02
starting problems - stephentanks1
Mercedes C240 ,Starting problems.When starting the engine turns for a long time sounding like a carb engine with the choke not working.If you stop engine then start again its ok,but leave for an hour or so the engine takes a long time to start.Its like this 8 out of ten times of starting. It has been to a bosch fuel injection specialist and he says its not electrical as the diagnostic equipment does not show up a fault.The general consensus of opinion seems to be fuel pump.Please can I have your ideas please before I give this particular merc` a Viking funeral.
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Fri 5 Oct 2007 19:06
starting problems - elekie&a/c doctor
Possible faults for poor starting are erratic flywheel/tdc sensor and engine coolant temp sensor that is out of range.These may not show as fault codes.The live data from the diag system needs to be checked.Both components are cheap and easy to replace.hth
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Fri 5 Oct 2007 19:10
starting problems - ChicksFan
Methinks could be crankshaft sensor, rather than a fuel problem.
But I'm guessing...

I see you've raised the issue on the MB site so you'll probably get some ideas there too.

Good luck!
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Fri 5 Oct 2007 22:22
starting problems - stephentanks1
Thanks for the reply.The bosch specialist says that both the coolant and crank sensors are both fine.I have ordered a genuine fuel pump,so that should eliminate the fuel side of things.Thanks again.
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Sun 7 Oct 2007 00:38
starting problems - ChicksFan
Keep us informed please. Let us know how you get on.

Ron
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Sun 7 Oct 2007 01:08
starting problems - Screwloose
I have ordered a genuine fuel pump so that should eliminate the fuel side
of things..


Not unless you fit a new fuel pump relay too.

This does fit a coolant temp sensor fault; live data readings when it's just cranking would be nice.
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Thu 1 Nov 2007 11:02
starting problems - stephentanks1
Ok chaps,here is the solution to my particular starting problem.It was number 1 fuel injector leaking.It cost £405.00 to put right,which I suppose is not too bad for a main dealer.I hope this helps someone else.If someone wants to e mail me about this problem and they think they have a similar fault,please do.stephentanks1@yahoo.co.uk
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Thu 1 Nov 2007 13:15
starting problems - ChicksFan
Thanks for feeding back the result Stephen,
Glad you got it sorted.

Ron
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Mon 12 Nov 2007 09:42
starting problems - TRracer
Hi Stephen i presume your car is petrol not diesel Thanks, Steve.

Edited by Dynamic Dave on 12/11/2007 at 10:07

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