How do you know when your fuel injectors are bad?
Tuned the engine but have not done anything with the EFI system/injectors. The truck is spitting and missing ever so often (usually between 25 to 40mph. The engine is a 4.9 with and inline six....manual trans.....any help would be appreciated. Thanks!
Try that speed in different gears ... if the engine begins to miss in a higher/lower range that should be a clue. Try starting out in second gear ... see what loading the engine does. I suspect if those injectors are 1987 they are ready for a good cleaning or a change. Geez ... I did not think fuel injection came out on Ford trucks until a few years later
Start with cap and rotor, and plugs and wires if the truck is missing. Replace PCV, Air and Fuel Filters while your at it. Fuel injectors are probably fine.
I did a complete tuneup and all these items were replaced. Maybe I should just clean the injectors and see what it does...thanks!
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