Rough engine after intake manifold replacement
I just replaced the intake manifold on my 99 Grand Marquis GS and it is now running rough. OBD shows no codes. I did it again and still no codes. While removing the fuel rail a couple of the injectors came off but I put them back on with ease. Any ideas?
Make sure you didn't cross any spark plug wires. Maybe replace the rubber O-rings on the fuel injectors so they seat in tighter?
Kind hard to do but make you hooked the right injector electrical plugs into the right injectors.
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