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So I cleaned the injectors and put it all back together. I changed the injectors positions to see If the fault followed them. It didnt. I still have a random misfire in #6 . The misfire in #1 has gone. I now have a code for a vacumme leak I havent had a chance to find the leak yet. While...

thankyou for your quick reply. With the upperintake off I cannot do the electrical test you suggested. If I do this check just cranking the engine will I get the test results I am looking for . The rough running seems to be only at idle. Indeed when first started , that is when it is cold, the...

My 97 explorer has a rough idle. It is showing codes for a random misfire in cylinders 1 and 6. It has new plugs wires and coilpack. I have good spark. A compression test showed a little low (90 lbs) in #5 . I then tested the injectors, using the ohm test, and they all test ok. A little research...

I have a 99 5.0 moumtaineer that runs very rough if at all. It is throughing codes po171, po113, po122, pi504, and pi409. This is my sons car and he tells me it was running " OK " and just died. When he got it going again it was running rough and through these codes. He has an aftermarket air...