This could be caused by any number of problems. The most common are probably:
Stuck or burned valves
Blown head gasket
Damaged piston rings and/or cylinder wall
Is there any other history of this vehicle that might give some more clues?
But before you do anything else, please double-check your compression tests. I find it odd that there ...
The most common cause of radio interference is arcing. This may be a bad bulb or bad wiring or a bad connector/connection. Rear defrost grids are notorious for this.
Unfortunately, this will be a long a drawn out diagnosis. This involves a process of elimination to see where the arcing is located. First, look for any lights that seem dimmer than the others....
Your sensor's battery is wearing out. Most of the sensors have to be replaced when the battery wears out because they're molded into the case. All the info I've read on them, and my own experience, says they last 8 to 10 years. I've had two that wore out at 9 and two are still going at 11.
The reason it happens on longer trips is because the sensor does ...
I just finished a faulty evap repair on a Mazda 3. I'd like to share the experience.
2008 Model Year, Mazda3, manual, 2.3L engine.
Check engine lamp, read codes P0442 (Evaporative Emission Small Leak) and P0455 (Evap Emission Large Leak)
Read up on line. Most likely source is fuel cap, followed by engine compartment mounted purge valve.
Test purge ...