SEAT LEON 1.9 TDI 2005 - DIESEL ENGINE -INTERMITENT STARTING PROBLEM

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Wed 12 Oct 2011 21:46
SEAT LEON 1.9 TDI 2005 - DIESEL ENGINE -INTERMITENT STARTING PROBLEM - eringobrach

Car has intermitient starting problem.. Starter motor and battery fine. When it finally catches it runs llike a dream. No spluttering, stop starts etc. therefore unlikely air in fuel or dirty fuel problem. Have been told there may be a fault in sensor to fuel solenoid.? No warning lights, or black smoke etc.

Any advice would be greatly appreciated.

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Wed 12 Oct 2011 21:58
SEAT LEON 1.9 TDI 2005 - DIESEL ENGINE -INTERMITENT STARTING PROBLEM - Railroad.

Are you quite sure the battery's as good as you say it is? When the engine is cold the ECU will operate the fuel injectors under all cranking conditions to aid easy starting, but when the engine is warm the injectors will only operate if the battery voltage is above a certain minimum. If the battery is not as healthy as it once was your engine could be difficult to start when warm. If this is the case I'd have your battery checked and if necessary replaced.

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Wed 12 Oct 2011 22:17
SEAT LEON 1.9 TDI 2005 - DIESEL ENGINE -INTERMITENT STARTING PROBLEM - eringobrach

Thanks for reply. Problem occurs warm or cold . Had battery checked and its showin 12.5 v (after it had been sittin all night) which i'm told is ok. F-in-law noticed that oil dip stick was vibratin against couple of wires and on a few occasions engine started when wires were moved but not every time. He is a retired heavy plant fitter but not too sure about this type of engine. He just feels that a sensor is shutting off fuel on occasion but no idea why. Any further views greatly appreciated.

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