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1992 f-250 diesel is running rough and there is a lot of blue exhaust smoke after start up what could that be?
Wiki User
∙ 15y ago
here is a list of some things to check 1 Inspect Valve Stem Seal Cracked or brittle valve stem seals allowing oil to enter combustion chamber. 2 Inspect Valve Guide Worn valve guides 4 Inspect Piston Ring Set Worn or broken piston rings. 5 Inspect Engine Control Computer Incorrect operation information being delivered and sent from the eec. 6 Inspect Distributor Worn, loose or incorrectly adjusted distributor. 7 Inspect Piston Worn or damaged piston. 8 Inspect Ignition Timing Incorrectly adjusted engine timing. 9 Inspect Engine Worn or scored cylinder block 10 Inspect Head Gasket - Performance Head gasket leaking coolant into cylinders 11 Inspect Fuel Injector Rich injector 12 Inspect PCV Valve Plugged or damaged pcv valve. i would think most likely a injector is stuck try using some sea foam through a main vacuum source this will unclog a injector i used this stuff allot i be leave autozone and many stores sell it for like 6.99 a can (Sea Foam / 16 oz. Engine Fuel and Diesel Treatment)
Wiki User
∙ 15y ago
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