2018 mazda cx5. 112000 miles
While driving from Wisconsin to Minnesota today my CX5 started running/sounding really rough whenever I accelerated(engine rpms around 2500 at 70 mph). The car would even shudder and vibrate . I pulled off at a rest stop to plug in my diagnostic tool which showed a misfire in cylinders 1 & 3. After I got back into town and stop and go traffic, the car would essentially bellow when I accelerated from a stop and would shudder more but would then sound smoother after getting up to cruising speeds.
Some background:
Last December I started getting really poor mpg and noticed a soft thumping noise like a muffled air compressor pump when the rpms would drop low when shifting to reverse or coming to a stop while in drive. It's since gotten worse and today it was really prominent.
last month I had the adjustable Hydraulic lifters replaced due to lifter ticking noise. This was related to mazda's TSB regarding issues with their cylinder deactivation tech. That issue waa resolved.
I'm not sure if the valve lifters had anything to do with what I'm experiencing now. Thoughts?
Could it be clogged fuel injectors? I've never had them replaced or used any kind of fuel system cleaner. There was one instance last month when I came to a stoplight last month and the rpms dropped to around 600 and then the car shuddered as if it was going to stall
While driving from Wisconsin to Minnesota today my CX5 started running/sounding really rough whenever I accelerated(engine rpms around 2500 at 70 mph). The car would even shudder and vibrate . I pulled off at a rest stop to plug in my diagnostic tool which showed a misfire in cylinders 1 & 3. After I got back into town and stop and go traffic, the car would essentially bellow when I accelerated from a stop and would shudder more but would then sound smoother after getting up to cruising speeds.
Some background:
Last December I started getting really poor mpg and noticed a soft thumping noise like a muffled air compressor pump when the rpms would drop low when shifting to reverse or coming to a stop while in drive. It's since gotten worse and today it was really prominent.
last month I had the adjustable Hydraulic lifters replaced due to lifter ticking noise. This was related to mazda's TSB regarding issues with their cylinder deactivation tech. That issue waa resolved.
I'm not sure if the valve lifters had anything to do with what I'm experiencing now. Thoughts?
Could it be clogged fuel injectors? I've never had them replaced or used any kind of fuel system cleaner. There was one instance last month when I came to a stoplight last month and the rpms dropped to around 600 and then the car shuddered as if it was going to stall