Vehicle & Technical > Defender

how do i diagnose a miss fire

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trickydicky:
good point but when i changed the cam belt the cam sprocket was defenatly out by half a tooth when i put the new one on it was exactly the same i have changed the injectors and had the pump set by a pro and it still puffs if left to tickover for a wile. its not burning any oil,dousnt have much power but i have only ever drove this one so i wouldnt know ,i only know what peaple have said about the 19j 2.5td. do you have any idiers. it defenatly smokes and rumbles when you boot it in the higher gears if you take your foot of the acselerator it stops. and thats only when the engine is pulling it flew through the imishions on its MOT last week so thats the only thing i can think of that perhaps the valve timing is slightly out like the diesel mechanic said.

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