5.8 ford 250
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5.8 ford 250
I have a 95 f250 5.8 automatic truck that has an awful misfire, will run but sounds like crap. Has great compression and spark, but 2 and 3 injectors will not pulsate....has power to both sides of wires on injectors, but will not pulsate even tho 1 and 4 are pulsating, I have swapped injectors and same thing. Any ideas?? Thx
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Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
On this truck the injectors are fired in batches of four, 1, 4, 5, 8 are together and 2, 3, 6, 7 are together. Sounds like you have a chewed wire somewhere or maybe the pin in the PCM connector is pushed back.. pin 59 for the second batch. If you disconnect the PCM you can test for continuity from there to all injectors, if that checks out your problem is inside the PCM.
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