Question about Cars & Trucks
You may need a diagnostic computer to read some codes and figures here.
Try checking the condition of the air intake temperature sensor.
Also check the condition of the mass air flow sensor.
That's assuming your engine is alright though, but there is also a chance that you may have a blown head gasket or cracked cylinder wall. To check, you will need to perform a pressure test on the cooling system. If you are losing pressure and collant, then this could likely be your issue.
Posted on Nov 04, 2012
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Posted on Jan 02, 2017
hi its not the egr valve white smoke indicates water combined with loss of power indicates headgasket oil blow back faulty pcv or piston rings worn yates210456
Posted on Oct 08, 2008
SOURCE: white smoke out the exhaust
hi white smoke is from coolant in the cylnders bed head gasket.blueish white smoke is oil in the cylnders either bad valve seals or bad piston rings.must rebuild engine or heads.
Posted on Feb 14, 2009
SOURCE: Exhaust smoke - 1994 XJ6 4.0
you have bad valve seals again and it is possible that the valve guides are bad ( to much play ) i worked for Jaguar 13 years and i have done 100's of these and very few needed guides it sound like the seals where not done correctly at the last repair.
Posted on May 29, 2009
If the cat was blocked you would have noticed a massive power loss and your speed would have been down to - 40kph
If that was the case then yes the cat has collapsed and needs replacing
Posted on Jun 30, 2009
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The Engine and Automatic Transmission (not applicable to manual transmissions) in this vehicles drive train are fully electronically controlled by a computer called the PCM and TCM (Power Train Control Module, Transmission Control Module). When a problem like this or other drive-ability related problems occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM. Also always check fuel pressure for correct spec for your make and engine type.
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