2009 3.6r (gen5) misfire after oil and filter replacement.
Posted: Fri Jan 31, 2025 2:10 amI had my 3.6r serviced yesterday; the oil and filter were changed, and the air filter was replaced (without consent, of course). All was good on the pickup and for the rest of the day, but I went to head to the shops tonight before they closed and violent shaking and misfiring appearon startup. Thoughts? Engine light, "S" Mode, and cruise control lights all flashing. I don't feel like I can drive it back safely to the mechanic as it's a little bit of a trip, but should I let them know? There is a tiny oil leak coming from either the rocker cover gasket or spark plug tube seal on the driver-side bank, it drips like once every few days. Is it possible oil is getting into the plugs, causing the misfire? It's not something I really want to check myself as it is a more intense job than a non-flat 6/4cyl, but I will because I can't really afford to get it checked/fixed/towed currently, given I just spent money getting it serviced 
Do you have any ideas of where I should look, specifically, or is it likely just a tube seal leak or coil pack issue? I will first check that the MAF sensor and air filter/intake are assembled correctly in the morning. Cheers.
Do you have any ideas of where I should look, specifically, or is it likely just a tube seal leak or coil pack issue? I will first check that the MAF sensor and air filter/intake are assembled correctly in the morning. Cheers.