Nissan X-trail Intermittent no start rough idle

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Nissan X-trail Intermittent no start rough idle

Postby nierka19 » Wed Apr 20, 2016 8:54 am

Hi, the car is Nissan X-trail 2.0 103kW 2002 year. Intermittent no start, rough idle but just then engine is cold. The problem is intermittent missing injector and ignition coil control. I attach psdata files. That can cause no injector control?
I took all measurements from ECU side.

P.S at the same time than I have rough idle my crankshaft and camshaft signal is the same, it doesn't change at all.

Image
Attachments
Nissan_X-Trail_2002_Petrol cam and crk sinchro_20160419-0004.psdata
Camshaft and Crankshaft signal
(668.45 KiB) Downloaded 43 times
Nissan_X-Trail_2002_Petrol Cam and Injector current _20160419-0004.psdata
Camshaft and Injector current
(2.15 MiB) Downloaded 33 times
Nissan_X-Trail_2002_Petrol Cam and Coil current_20160419-0002.psdata
Camshaft and Coil current
(2.46 MiB) Downloaded 30 times
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Re: Nissan X-trail Intermittent no start rough idle

Postby Fat Freddy » Fri Apr 22, 2016 9:56 am

Interesting. Have you considered this -
topic9755.html

From a quick look the coil shuts down at the same position and the injector shuts down on either one event or the following. Try disconnecting a coil at a time (COP IIRC) and see how it behaves.

HTH
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Re: Nissan X-trail Intermittent no start rough idle

Postby nierka19 » Fri Apr 22, 2016 6:58 pm

The reason is cam crank relationship issue (jumped timing or chain is stretched).
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Re: Nissan X-trail Intermittent no start rough idle

Postby Fat Freddy » Mon Apr 25, 2016 11:50 am

Too easy.

Did this not log any codes? Usually a cam sensor code.

You didn't happen to get any captures of Cam, Crank first attempt at starting before oil pressure has been built up?
Reason I ask is I'm after a few example's to confirm, or not, the chain stretch/slack is easily visible on the Cam signal - more evident than looking at sync.

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