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  1. R0cketMan

    Not wanting it to be a head gasket

    I had an old 1991 Ford Explorer with a 4.0l v6. It ran well for a while then the temperatures started creeping up. It eventually got so bad, I could drive maybe 10 minutes or so before having to "burp" the coolant system by opening the radiator cap, and quickly, before the temperature pegged the...
  2. R0cketMan

    2018 Expedition Engine Knocking?

    If your expy is making that noise just after having the VCT work done, they likely screwed up the timing when putting it back together. That sound reminds me of an old motorcycle I had when I was young. I rebuilt the engine and it had a similar "tapping" sound but only 1 tap since it was a...
  3. R0cketMan

    What mod next?

    In a previous job, I did fuel system calibration work as an engineer and I can tell you the company does not engineer every piece of that puzzle to perform at its best. There are typically 2 scenarios. Pick a standard CHEAP paper air filter and make sure the REST of the system works together...
  4. R0cketMan

    Lean conditions on both banks. What could it be?

    A quick test for fuel system issues would be to cycle the key several times before starting to build pressure in the fuel system. A dirty filter will only cause starvation under load when the engine demands a large constant flow rate. You’ll likely get some kicking and bucking if it is severe...
  5. R0cketMan

    Engine stall at speed- no code

    I had the same issue in my '03. I'd have the cruise control set on the highway then the engine would cut out. Cruise control sent the pedal to the floor, no check engine lights. I'd have to put it in neutral then restart. Turned out to be the fuel pump relay in the passenger side fuse box. The...

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