Timing

[Austravel]

Hi,

Ages ago Nissan changed my timing when I said on shut down it was very rough and sometimes ran on. Have recently had injectors changed and a bit of a tune. Obviously they have set the timing back to spec and now it's again very rough on shut down. When turning off the engine wants to jump out of the bonnet.

Is this normal, should I have it changed and if so advance or retard??

Thanks

[GU_247]

Hi,

Ages ago Nissan changed my timing when I said on shut down it was very rough and sometimes ran on. Have recently had injectors changed and a bit of a tune. Obviously they have set the timing back to spec and now it's again very rough on shut down. When turning off the engine wants to jump out of the bonnet.

Is this normal, should I have it changed and if so advance or retard??

Thanks

you timing sounds like its too advanced causing preignitions so retard it

[Austravel]

Pretty sure the injection guys just set it to Nissan specs.



Thanks[/quote]
you timing sounds like its too advanced causing preignitions so retard it[/quote]

[BadMav]

Firstly, is it petrol or diesel???

If it is petrol, the ignition should have nothing to do with it shutting down rough as that is what is shut off when you turn off the key. The computer should also shut the fuel off when the ignition is shutdown too. I would think that perhaps you have a leaking injector and has carboned up one of the cylinders, causing hot spots. Get the injectors checked again, at least you can rule them out if it's not. Also check what grade/quality fuel you're running and whether it's compatible with the tune.

[Austravel]

Thanks will do. It's diesel.

Firstly, is it petrol or diesel???

If it is petrol, the ignition should have nothing to do with it shutting down rough as that is what is shut off when you turn off the key. The computer should also shut the fuel off when the ignition is shutdown too. I would think that perhaps you have a leaking injector and has carboned up one of the cylinders, causing hot spots. Get the injectors checked again, at least you can rule them out if it's not. Also check what grade/quality fuel you're running and whether it's compatible with the tune.