Pedjero runs very sweetly but blows black smoke on acceleration.2.5 turbo diesel exceed intercooler

black smoke is over fuel and in a diesel with a turbo that indicates that
1 the turbo variable vanes are not adjusting to low rpm
2- the turbo turbine wheel is not spinning up
3-the intercooler or hoses are leaking boost air
4-- bad injectors -- squirting and not atomizing

if diesel and turbo , check turbo operation of for holes in the intercooler
if turbo or naturally aspirated check/ replace injector tips as black smoke indicators squirting and not atomizing
if petrol check for excessive fuel pressure, faulty injectors , leaking injector seal
regardless of petrol or diesel --black smoke indicates incorrect air / fuel ratio ( too much fuel) so injectors, intercooler, bad turbo or blocked air cleaner are all candidates for the fault

have a turbo boost pressure test done under load on a chassis dyno
under load the boost should be right up
check for leaks in the intercooler hose fittings or cracks in the intercooler
black smoke under load indicates a faulty turbo or turbo air leaks.

check the turbo for failure and check the intercooler for cracks and leaks . check the hose clamps . have the tips of the injectors cleaned / replaced and if you want to blow the engine continue to use easy start. Diesels are compression ignition engines and that means the air is white hot at the point of injection of the diesel and any fuel substance introduced will spontaneous ignite and bend con-rods and crack pistons.

check the rubber hose going from the egr valve to the intercooler it is prone to splitting or blowing off the intercooler due to a corroded jubilee clip also check all the pipework in the intake system. check the intercooler also, it may have been damaged

Is it a turbo diesel? It sounds like the turbo is shot. Black smoke and runs like **** a pretty sure signs.

I assume its the 6.0L diesel...If so sigh......double sigh.. I had one of these...triple sigh. I need a bit more clarification. How many km on the engine/vehicle. Also, you say that it blows black smoke while running at a constant speed at 2600 rpm, or while you are accelerating to 2600 rpm. Also, when you say the boost goes down, does it decrease by itself, or when the throttle is let off. The boost naturally goes down when the throttle is released (not trying to be a ****, i dont know how much you know). However, if the boost is going down by itself, while the engine is under load (its not supposed to, it should stay constant) it could be a couple of things, which "can" contribute to black smoke. If there is a leak anywhere from the turbo to the intake of the engine, it will cause the engine to get less boost, which means less air into the cylinders, which means black smoke. Check all of the connectors/tubing coming from the turbo to the intercooler, and from the intercooler to the intake manifold and see if there are any problems. The more costly problems which results in boost going down, and black smoke, deals with a problem with the wastegate on the turbo (controls how much boost is produced, and when too much is being made, it will bleed off excess pressure). So if your wastegate is malfunctioning, your boost will go down and you will get black smoke cause the engine is not getting enough air. also, around 160km...80mi, the injectors "can" start to go on the 6.0L diesels....I would check the turbo for leaks, the tubing for leaks, and the intercooler for leaks (a big rock can punch a hole in radiators and intercoolers...intercooler will be in front of the radiator). I hope this helps

can anyone tell me where the intercooler is on a 05 plate jaguar x type 2.0 diesel thanks

1 Inspect Piston Ring Set Worn or broken piston rings. 2 Inspect Valve Stem Seal Cracked or brittle valve stem seals allowing oil to enter combustion chamber. 3 Inspect Head Gasket - Performance Head gasket leaking coolant into cylinders 4 Inspect Fuel Injector Rich injector 5 Inspect PCV Valve Plugged or damaged pcv valve. 6 Inspect Engine Worn or scored cylinder block 7 Inspect Piston Worn or damaged piston. 8 Inspect Valve Guide Worn valve guides

Sounds like the turbo seals have failed.