engine

Hi there, I have been witnessing fluctuating RPM since 4 months now on my 2019 CX9 that has 130k on the clock. The RPM keeps on going down then back to normal occasionally. I replaced sparking plugs, air filter and fuel filter. I'm thinking to reach out to the throttle and clean. Before I do...

I have a 2011 Mazda CX-9. It’s having a hard time starting. It will turn over but won’t start. It will start right up in the morning after setting over night but if you stop somewhere, it takes a while to start back up. It will turn over but not start. It had a P0171 and a P0174. Which are lean...

Hi everyone, I’m looking for some help with an issue that’s been driving me crazy on my 2015 Mazda3 2.2L Skyactiv-D 150HP (136,000 km). I’d like to describe the full situation in detail to see if anyone has gone through the same thing. 🔹Main symptoms When the engine is warm and idling (around...

Do you go full throttle specifically to "clear-out" the exhaust system or carbon deposits in the engine? Do you believe in it? Do you have any evidence (Even if anecdotal) That this works? How do you do it? How often? I usually drive at low RPM and used to only go full throttle maybe every...

Noticed a strong smell of burning oil and rubber through the air vents today, pulled over and opened my hood to a plume of smoldering smoke and a pool of oil on the ground. After a look underneath, everything on the passenger side is absolutely covered in oil. No oil pressure/level lights or...

Hey everyone! first time poster to the forums here. I Have a 2003 Mazda protege5 that i got back in 2021 with just under 200k for $2,200. Fast forward to now and I'm doing a engine over hall, but I'm having timing issues. I have all the timing marks lined up, with all timing components being...

Hi, My Mazda CX-3 idle drops when I put it in D along with vibration, when the ac is on, the idle comes back to normal. It only happens when my ac is turned off. Does anyone have this issue?

Has anyone upgraded their DRTuned, turbo, to David's Tier 2 tuning? What was the tuning experience like and what is the final product? David's Tier 2 has been in the making for three years. This tune should release more of potential of the turbos. I'm about ready to pull the trigger on his Tier...

I have a 2016 CX-5 with 65k miles and want to remove the throttle body for cleaning for the first time. Is it ok to reuse the gasket or does it need to be replaced? Is it paper or rubber o-ring type?

Hello, I started hearing this intermittent clicking noise when the car is running. I notice the noise mainly when I start the car and it's idling, and sometimes when I am driving. I have attached a video of the engine running. The noise seems to be mainly coming from the left side, near the...

I have a 2017 Mazda6 2.5L Skyactiv direct injected. Posted in the lounge since this engine is used across many models, figured this may give the thread more visibility. I’m sure it’s due for valve cleaning, although Mazdas supposedly don’t gunk up the valves even with gdi due to some magic...

Recently did a oil change in my 2013 CX5 with 200k. I have had this car for right around a year and it has always had a stronger oil smell than my other two cars (Toyota's). I was wondering if this was the case with you guys as well. I know this is a DI motor so fuel Dilution isn't out if the...

Last week I bought a new 2025 CX-5 S Select. So far, I’m really liking the vehicle. I was surprised (and pleased) to find on the test drive that it has no auto stop start. Now I am wondering, did I get the same allegedly heavier duty starter that comes with auto stop start? Or is it a...

Cam timing issue 2.5 liter Mazda CX-5 GT. 2014 Mazda with 210,000 miles blowed the head gasket. Since i needed to remove the head I purchased a Cloyes chain kit for the oil pump and timing chain. I took many pictures of the timing marks at TDC before disassembly and replaced everything after...

Our beloved 2014 CX-5 has served us mighty well for many years. She's got 314k miles on her now and she's got her first major trouble. I'd appreciate some help on what troubleshooting to do next. On my wife's way home she got a check engine light. I pulled the code and it is a P0304. Cylinder 4...

Hello everyone, Maybe someone here has experienced something similar. I have a Mazda CX-5 2014 diesel 2.2, which I bought about 10 months ago on finance. My first issue appeared with an error saying “Vehicle System Inspection Required.” I took it to the garage, and they said it was an air-con...

Mazda CX-5 2.2L Hi, This is my first post, and you may say "garage" is the right answer... But my Mazda has a very noticeable judder in 3rd, 4th, 5th, (don't to to 6th often) from 1.8K revs to 2.5K revs, if just lightly touching the peddle it will cruse without judder, but heavier pedal press...

Well the Mazda known faulty cracked cylinder head issue continues! Beware! My meticulously maintained 2022 Mazda3 2.5 started dumping oil at 62000 miles and yes 2000 miles out of warranty it needs the head replaced. I’ve contacted Mazda for a goodwill repair because the dealer quoted over...

Hi! Not sure if anyone will be able to help me figure out why my 2005 5speed Mazda6 is making this fluttering noise and it's pretty loud. It started about a week and a half ago and I had the check engine light on and the codes it threw were P0304, P0850 and that's it. I went to go to work the...

Hello! Can anybody help me determine what kind of bolt this is? I can't find it anywhere near me. Thanks! 2008 Mazdaspeed3