ctinnovation
Posts: 168
Joined: Oct 2007
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Friday January 02, 2009 16:24
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Hello;; This seems to be a common problem. Question,,,Why did they say the 3 injectors where bad ? Did they have them out?? Are they original,,or have they been replaced? I no they like to guess at the customers expense alot of the time and if the new injectors dont fix it they will tell ya they were wore out anyway !! Have you noticed a drop in turbo pressure at all ? If the turbo is getting bad it will not supply enough air with the fuel and this will make it smoke. Stupid question but ,,,did you check the air system for clogged up filters or holes in the air cooler? When you had the valve cover off did ya check to see if any of the injector bolts were loose. Another thing ya can check is take the suction line off the fuel pump and the return line off the back of the head and run them into a 5 gallon bucket. Start the engine and watch for air bubbles. There should be none. Better yet just remove the return line from the back of the head and run that into a bucket.The best way to find the miss is on a dino plugged into the computer and do a cut out test,,it should show the week cyl and then go from there. One more thing,,,while the engine is running (and the truck stopped,,lol ) grab the wires going into the computer and firmly tug and twist the plugs,,,it could still be a bad wire somewhere,,,infact it could be a whole lot of things but at least it might narrow it down a bit. Hope that helps PS ,,,I have also seen a tps sensor do things like that too,,borrow someone elses and try it.!! Take care
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