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2006 1.8tdci very random crank no start

Old 17-03-2019, 02:27 PM
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oldboy
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Default 2006 1.8tdci very random crank no start

Very randomly, 3 times in the last six months my car will crank and not fire. The conditions are always first thing in the morning. It has never cut out/stalled while driving. It will initially start as normal, then stop. It will then require a 'lot' of cranking, eventually putting up the message 'engine system fault'. But, keep cranking and it will fire and then operate as normal for weeks/months. No codes showing/pending, no leaks, regularly serviced (Oct 2018). Goes like a train in all other respects.

Any help would be gratefully received!

Thanks
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Old 17-03-2019, 08:34 PM
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Answering my own question here but the car was serviced just before I got it and I wonder if the fuel filter has been fitted correctly, ie the rubber seal?
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Old 17-03-2019, 09:29 PM
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james kiely
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have you had the car plugged in to see what fault its logging?
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Old 17-03-2019, 09:30 PM
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Originally Posted by oldboy View Post
Answering my own question here but the car was serviced just before I got it and I wonder if the fuel filter has been fitted correctly, ie the rubber seal?
your non-start would be more often, even all the time if that was the case.

If the engine malfunction message has shown on the dash there will be a fault code.

Have you been checking the on-dash self diagnostics? They aren't much use.

Last edited by GVK.; 17-03-2019 at 09:32 PM.
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Old 17-03-2019, 09:51 PM
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Originally Posted by james kiely View Post
have you had the car plugged in to see what fault its logging?
No EML. No fault codes, no pending codes.

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Old 18-03-2019, 04:35 PM
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Just had a mate with a 'Delphi' diagnostic pull a code P0089 Fuel pressure control valve - Signal is above maximum threshold.
It's been running fine today, but that code was logged. No EML showing.

Again thanks

Last edited by oldboy; 18-03-2019 at 04:37 PM.
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Old 18-03-2019, 08:19 PM
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Make sure fuel filter is good
leak off test on injectors
No leaks on fuel pipes/hoses
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Old 18-03-2019, 08:24 PM
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Originally Posted by GVK. View Post
Make sure fuel filter is good
leak off test on injectors
No leaks on fuel pipes/hoses
You do tend to get some diesel around the engine but the only place I've noticed some 'wet' is on the plastic pipes where they loop around under the brake reservoir? Can't see anything obvious but its there all the same. Is there a guide on here regarding the 'leak off test'

Thanks

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Old 18-03-2019, 08:36 PM
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I may have posted up about leak off tests on here in the past, ideally you need a special tool which is 4 calibrated bottles and pipes to measure the leak off.

I'll see if I can find my old posts.
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Old 18-03-2019, 08:41 PM
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https://passionford.com/forum/6302016-post6.html

https://passionford.com/forum/genera...not-start.html

http://www.bba-reman.com/forums/topic95757.aspx


Measure diesel injector return quantityStart engineLet engine run until one of the measuring cylinders is filled completelyStop engineThe maximum permissible return quantity is 3x as large as the smallest return quantity measured

Measuring cylinder of injector
Contents
1
41 ml
2
44 ml
3
50 ml
4
46 ml
Maximum permissible return quantity:
41 ml x 3 = 123 ml
All the injectors are in good order.
Example not okMeasuring cylinder of injector
Contents
1
50 ml
2
18 ml
3
18 ml
4
10 ml
Maximum permissible return quantity:
10 ml x 3 = 30 ml
Injector 1 has too large a return quantity. It must be replaced.

The format is a bit pissed on here but you get the idea.

Last edited by GVK.; 18-03-2019 at 09:09 PM.
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