Your photos reminded me of this TSB. Different location on the TSB, but you can see that a limited amount of coolant could be coming from the water pump under normal operation. Not saying this is your case, just to take it into consideration.
That’s a good one to note. It would explain intermittent smells versus a constant leak. My coolant level in the overflow tank was right at the L mark right after driving for 25 minutes so I would have expected a higher level. Either way, I’ve got an appointment this afternoon with my local dealer and we shall see what they find.Your photos reminded me of this TSB. Different location on the TSB, but you can see that a limited amount of coolant could be coming from the water pump under normal operation. Not saying this is your case, just to take it into consideration.
Do you ever do any driving where you are really working the engine, like towing? Also, what octane do you usually use?Welp. That’s another one down. My ‘18 GT is leaking from the engine block.
Never towed a thing a day in my life. I live near Washington DC, so all I do is drive in traffic. Not a lot of mountains, but the commute is considered “extreme” driving conditions. I occasionally floor it, but who doesn’t?Do you ever do any driving where you are really working the engine, like towing?
Mine had 40,405 miles (roughy 63k km) on it when I noticed the leak. The misfires and poor performance issues started around 30k, and the dealer basically dismissed me until I got a CEL from a misfire. Then they replaced one ignition coil and one spark plug and said that the rest must be my imagination because they couldn’t reproduce it. This made the sixth time (not including basic maintenance) I’ve had it in between 30k and 40k.So definitely not isolated to 16-17s. How many km did you have on it ?
Great loaner though.
I just noticed the octane question. I always use 92+ octane. 93 octane is my norm, but depending on where I go, it can be 92. I ran one tank of 87 when I first bought it before I knew about the performance difference.Do you ever do any driving where you are really working the engine, like towing? Also, what octane do you usually use?
Yup, 2019 model year is when engine was modified, at which point the issue should be fixed.So definitely not isolated to 16-17s. How many km did you have on it ?
Great loaner though.
What modification Mazda did to the 2.5T for 2019 MY? I assume CX-5 got the same modified 2.5T in the same MY?Yup, 2019 model year is when engine was modified, at which point the issue should be fixed.
I was going to ask the same thing. What was done differently with the 2.5 starting in 2019 to hopefully eliminate the coolant leak issue?What modification Mazda did to the 2.5T for 2019 MY? I assume CX-5 got the same modified 2.5T in the same MY?
This’s very strange to me, as the culprit of the coolant leak is usually on cylinder head, not cylinder block.⋯ I spoke with the SA and was told that they’re only replacing the engine block
Since your remaining powertrain warranty is longer than standard repair warranty of 12 months / 12K miles, that’s what you get.⋯ and that my powertrain warranty is the only warranty I get. I’m at 40k and will be around 43 months since the in-service date so there’s 20k and 17 months left. I recall someone else saying they got 12 months/12k miles but i think they were beyond their powertrain warranty. I’m not sure why, but I feel like that’s kinda insufficient. Maybe I’m just paranoid the service technicians won’t disassemble and reassemble everything correctly. Does this align with everyone else’s experience who’ve had this work done?
This’s very strange to me, as the culprit of the coolant leak is usually on cylinder head, not cylinder block.
Since your remaining powertrain warranty is longer than standard repair warranty of 12 months / 12K miles, that’s what you get.
If this coolant leak is a design flaw, you definitely want longer warranty. Just wait and see if there’s any future development on this issue.
Sounds good. I’m trying to keep myself from trading it in on something. The dealer that has it put a deal together that gets me into a ‘21 signature and keeps my payment exactly where it is, but I’d be starting the loan over and driving essentially the exact same car, but with less miles and a couple extra features.
This has been a sour experience for me, especially since this is the third Mazda I’ve owned, and the second one to need an engine replacement (I had a 2010 Mazda3 that had the timing belt tensioner come loose at 11k miles and wrecked the engine). I like Mazda but I’m finding it hard to stay loyal with these experiences.
If there’s a design flaw, there’s nothing can prevent the same thing happening at certain time; unless Mazda has found the root cause of this coolant leak issue on the 2.5T, and revised the design.⋯ All I can say is that it seems that the newer engines don't have this issue, but it's also still too early to say that with any certainty.
If there’s a design flaw, there’s nothing can prevent the same thing happening at certain time; unless Mazda has found the root cause of this coolant leak issue on the 2.5T, and revised the design.
In case of Mazda’s 2.5L with cylinder deactivation, there’s a TSB with new part number for pre-assembled whole cylinder head when dealers have a need to replace the head due oil leak、fallen rocker arms、or noisy switchable hydraulic lash adjuster used for CD.I think others have stated that the new engine assembly or cylinder head assembly for 2019 has a revised part number. That revised part number alludes to a revised design.
So I went by the dealer yesterday to ge the rest of my stuff from my car. I spoke with the SA and was told that they’re only replacing the engine block, and that my powertrain warranty is the only warranty I get. I’m at 40k and will be around 43 months since the in-service date so there’s 20k and 17 months left. I recall someone else saying they got 12 months/12k miles but i think they were beyond their powertrain warranty. I’m not sure why, but I feel like that’s kinda insufficient. Maybe I’m just paranoid the service technicians won’t disassemble and reassemble everything correctly. Does this align with everyone else’s experience who’ve had this work done?