Repairs & Ownership
2020 Acura RDX SH-AWD, about 48,000 miles. I started measuring the oil level every few hundred miles and it is definitely falling between changes. There is no obvious puddle and I do not notice smoke…
There is a light ticking sound that follows engine speed for the first few minutes and then becomes hard to hear. Oil level is correct. How would you separate normal injector noise from valvetrain no…
A catalyst efficiency code came back after clearing once. The car drives normally and there are no misfire codes. Before condemning the catalytic converter, what sensor/data checks are worth doing? I…
2007 Porsche Cayman S, about 96,000 miles. Looking at an older Cayman S with good records. I keep seeing buyers emphasize borescope/PPI work on this generation. For someone vetting listings, what wou…
2023 Genesis G70 3.3T, about 67,500 miles. Long-term fuel trims are much more positive at idle than at 2,500 RPM. No obvious misfire. Does that pattern still make an intake/vacuum leak the first plac…
2013 Infiniti G37 xS, about 14,500 miles. Temperature creeps up sitting still and drops once road speed gives it airflow. Fans appear to run, but I haven't checked actual commanded speed. Any good wa…
2024 Chevrolet Corvette Stingray Z51, about 25,000 miles. I started measuring the oil level every few hundred miles and it is definitely falling between changes. There is no obvious puddle and I do n…
2021 Mazda CX-5 Turbo, about 78,000 miles. I'm seeing the oil level fall enough between services that I now check it regularly. No obvious leak. For other turbo owners, what documentation/tests did y…
Looking at an older Cayman S with good records. I keep seeing buyers emphasize borescope/PPI work on this generation. For someone vetting listings, what would make you walk away before spending money…
Idle has a slight shake once fully warm, but 100–200 RPM above idle it smooths out. No major loss of power. Would you look at mounts, vacuum leaks, ignition or fueling first?
2024 Subaru WRX Premium, about 49,000 miles. A catalyst efficiency code came back after clearing once. The car drives normally and there are no misfire codes. Before condemning the catalytic converte…
2022 Ford Maverick XLT Hybrid, about 61,000 miles. Idle has a slight shake once fully warm, but 100–200 RPM above idle it smooths out. No major loss of power. Would you look at mounts, vacuum leaks,…
Scanner showed a cylinder-specific misfire code after one rough start, but the car feels completely normal now. Plugs aren't that old. Would you swap coils to see if the code follows, or just monitor…
A cylinder-specific misfire code appeared after one rough start, then cleared and the engine feels normal. Plugs are not very old. Would you swap coils, inspect plugs, look at injector data, or wait…
2021 Hyundai Palisade Limited, about 50,000 miles. Idle has a slight shake once fully warm, but 100–200 RPM above idle it smooths out.
2015 BMW 335i, about 147,500 miles. Long-term fuel trims are much more positive at idle than at 2,500 RPM. No obvious misfire. Does that pattern still make an intake/vacuum leak the first place to lo…
The car starts normally most of the time, but after filling the tank it occasionally cranks longer and runs rough for a few seconds. Could EVAP/purge behavior cause this, and what would you test? I a…
I've started checking the dipstick every 500 miles and the level is definitely moving down between oil changes. No obvious puddles and I don't see smoke. At what point would you stop calling this nor…
2023 Lincoln Navigator Reserve, about 118,000 miles. I've started checking the dipstick every 500 miles and the level is definitely moving down between oil changes. No obvious puddles and I don't see…
A catalyst efficiency code came back after clearing once. The car drives normally and there are no misfire codes. Before condemning the catalytic converter, what sensor/data checks are worth doing? I…
