engine

I just did an engine swap in my 2008 Mazda 3, it was a 2.3 to 2.5 conversion swap everything went in perfect but now my immobilizer won’t turn off. I have tried the on 10 min off 30 seconds 6 times, I have tried unplugging negative for 30 min, taking positive and negative off and holding them...

Just bought a new 2025 this past saturday. Love the car, but it doesnt seem to me CDA is working. I had the CDA turned off by the sales rep for the test drive. Now that I have been driving a few days it has occured to me that it should be reactivating every time I restart the car? I have noted...

Hi, was seeing if anyone else have this. I did a lot of highway driving but over two years it mainly been city. Let's say 80 % city, would take 8 months to even hit 7,000 miles. Recently on highway when I hit "sport mode" for the boost, I do smell a oil burning. Was wondering if anyone else...

Hello, I have 2018 CX-9 that has the cracked head with coolant leak (confirmed by dealer). The warranty work was denied due to car having salvaged title. I’m looking to buy a replacement engine from 2023 CX-9. Do you know if it is a direct replacement? I know that I have to replace with an...

I'm a new Mazda owner a 2022 CX-5 Premium. and so far I'm quite impressed. I noticed that my cylinder deactivation monitor screen will go from 4 active to 2 active and then 0 active. In other words, all the cylinders in the graphic go dark. It ill happen if I take my foot off the gas That would...

Hi, I have been searching for a while and cannot find any directions to remove the exhaust manifold, I have it physically unbolted and maneuverable , but there must be a trick to getting it removed. Does anyone have instruction on the removal process? one thing that I think is causing me grief...

Well, I've been trying to get my P5 back on the road. Started driving it again last week (first time it has been driven since April 2018). Put about 50 miles on it when the check engine light came on and started flashing. Misfire and dead downstream O2 sensor (had mechanic friend check it...

My wife told me that the check engine light came on today on the CX-5 (2013 2.0Gas, 80K Miles). She did not notice drivability concern, except saying the engine 'might be' a bit louder at loads. I used OBD scanner and retrieved two codes: P0172 running rich, P013a downstream O2 slow switch...

A few weeks ago the belt tensioner unit failed while driving. I had that replaced and after that I noticed some hesitation while driving. On Friday I was on the highway and felt more hesitation and when I stepped on the gas I got three error messages. A message engine inspection required, TPMS...

hi, the oil spec of the non turbo cx5 is very wide and i know the car can deal with a lot of oil specs but wanted to know what type and brand people use. im a bit of an oil freak and like to use the best lubes. bought my 2.5 awd non turbo 2016.5 5 months ago with 20 k miles now and been using...

A few weeks ago, the CEL came on. I took it to Advanced Auto, they gave me the code, went to the mechanic, and he said that it was one of the oxygen sensors. I paid for that repair, and by the time I came back home, the CEL was back on. I took it back, they said nothing was wrong with the...

Hey all, First time posting so excuse me if it's in the wrong area. My P5 took a dump on me with 329k on the clock and it's time for a new motor. I'm gong to ultimately rebuild the current motor but have time constraints so I just need to get a motor in asap. I have an FSDE in it but when I...

Hi guys, I've swapped a Mazdaspeed Protege engine that I completely re-built with the help of an experienced engine builder into my P5. Upon starting the motor for the first time after the rebuild I was very distraught to hear a horrible rattling/knocking coming from under the hood. My valves...

Hey all! So recently the my engine started knocking so I'm planning on putting a new engine in (oem) and putting a turbo on it. If the damage in the current engine isn't that bad I'll probably end up re-building the motor if possible and boosting at a later date (unlikely). Anyways, I'm on a bit...

Hi everyone, Upon cold start up at 65F, my CX-9's engine speed surges for a second to ~1600RPM from the ~1400RPM warm-up speed. I have been having this problem with my CX-9 from every cold start for a few weeks now as I don't recall it doing this in the past. After the engine is warmed up, the...

Hello All, I'm considering replacing the serpentine belt in my 2016 CX-3 Grand Touring. I've done belts on other cars before. Has anyone done this on a CX-3 before? Did you think it was particularly difficult? Any tips/tricks?

I'm getting ready to swap a MS3 engine into my base model 2.0l MZ3 but I can't seem to find a good illustration of where the motor mounts are in on the MS3, any help??

I bought a used Mazda CX-9 that didn't have the owner's manual. Someone here in the Mazda community helped me find this site to decipher my VIN. https://www.vindecoderz.com/EN/check-lookup/JM7TB19A6D0409270 I still have 3 questions that I'd appreciate your help answering (so that I can...

Hello all. Been a while since I was on here, but wanted to pop back in for advice. Im in Germany for a couple years, but I have a MSP that I bought for near nothing sitting in my barn at home. It had a bent rod and hairlined pistons. I took the removed and disassembled the engine; which is also...

I own a protege5 with many mods in good shape. 110000 miles. Engine smoking. What to do with this car??