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It sounds to me like it could be a glow plug fault !
The glow plugs heat the diesel before it combusts. An easy way to diagnose this is check your exhaust after cranking on a cold morning if you have thick white smoke then you've probably got a glow plug down on 1 of your cylinders or maybe more
Hope this helps Nick
sounds like a vacume leak this can stop cold engine from starting. vacuum leaks can be hard to find, it could be just about anywhere. when you have engine running spray the easy start or carb cleaner around the vacume lines, note any engine sound changes. and that will be where the problem could be, say could as it could have more than one leak.
white sort of smoke when cold and trying to start ,well dont panic and pull engine apart i think you just need new glow plugs thats all ,when its really cold just spray a squirt of easy start ether spray into the air intake whilst someone cranks engine and if it starts straight away then you know you need new glow plugs or the timer relay isnt working ,their is nothing wrong with the engine its just the fact that the glow plugs are down to one out of the four working if not all of them are dead and what you seeing is unburnt fuel as vapour .This is normal what you are seeing if the heater glow plugs are not working as after 40yrs i have seen this quite a lot especially with ricardo type cylinder heads (indirect injection) but you do get it with direct injection as well if the compression is down or the fuel has gelled up but you need temperatures of at least 10c below for this to happen unless the fuel has a antifreeze additive or half a gallon petrol to a tank of diesel will do the same antifreeze trick.
Hi if the car is a diesel engine then you need to repalce the glow plugs these are used to heat up the diesel for starting the car from cold once the car has been run or if the temp is not to cold then the glow plugs dont need to all work and it will then start.
The problem points to the glow plugs if the car starts ok when it is up to temperature if when the car is upto running temperature and then still has trouble starting then the problem will be with the diesel pump itself. If its the pump and not the glow plugs then this could be an expensive repair. If its the glow plugs then these can be brought relatively cheap and are not to much trouble to replace if you have done this type of repair yourself.
Let me know if your car is petrol or if you need further assistnace then i will assist you further ok
hi from uk if you have to turn engine a little longer than normally? on initial start fro cold? and then starts/runs ok for rest of day ? then more than likely your engines glow plugs are in early stage of failing/burning out? these engines rely on pre heat of cylinders when starting especially from cold so they have glow plugs for this purpose indication of burning out is the grey smoke you report on cold starts this is fuel that is not being combusted due to poor cylinder compression/s being heated on first start but when engine heats up no problems so i suggest you renew all 4 glow plugs they are easy diy job and you can purchase from good motor stores not necessarily dealers they are just like spark plugs usually 10 mm socket/spanner to change em after disconnecting the elec supply cable from each hope this helps and inspires you? if milage is high then they are in need of renewal
My vanette had exactly the same problem yesterday. The glow plugs have a timer and a relay. I think that if the light on the dash goes on and off as normal then its probably the relay not the timer. So I have replaced the relay (£50 nissan dealer only) which is located in the center console below the radio/heater controls. Until its really cold again tomorrow I wont know if its really cured it but I'm fairly certain that will be it.