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- Mazda Protege DX
I updated the thread as i go, so please scroll through the pages as i have provided updates as i go.
Here is to my first post, i thought this might be useful to some people in the future.
Before i dive into the details a few details regarding to the vehicle.
Vehicle was purchased Jan 2019
Currently 24090kms
Synthetic 5W30 Oil Change every 5000km or 6 month whichever comes first.
Initially I noticed a slight lump when idling sometimes, but it is not bad at all, you do notice it with your foot on the pedal and you do feel it, but i mean its so slight its barely noticable, no power loss during acceleration or cuising, no check engine light, no difference in terms of fuel economy. Now this has been going on for at least 2 month.
A week ago my check engine light turned on, and i thought its because i didt fully tighten the gas cap because i did fill up a day ago, few days passed check engine light is still there, so i decided to pull code to see.
interesting stuff i found with my cheap scan tool, i was shocked to see how many module this tool picked up.
This would make any future diagnostic easier, now back to the problem at hand.
As you can see misfire cyl3, I was curious on how bad the misfire was, so i cleared the dtc and the code did not come back, I checked the datalist for misfire count and surely you can see the misfire count go up slowly, but obviously it is not severe enough to set the check engine light.
A regular person prob would not even notice the tiny vibration, and because its not 100% misfire and it is not severe, it does not set the check engine light, but with a scan tool you can see the misfire count go up slowly as you idle.
some interesting data point i saw while going through the list, it has a counter for how much energy the engine produced, i also see a data point for engine sound enhancement, thats a weird one for me, the number does change as you drive and the car measures engine oil level in mm.
OK, anyways back to the issue at hand, the misfire is very interesting, the count would only go up when idling, during acceleration or hard acceleration there is 0 misfire count, it does not matter if car is cold or hot.
Initially i was going to swap the coils, but i assume it can not be,if coil is bad it would misfire at idle and acceleration and especially hard acceleration and same with spark plugs, i then thought perhaps the injector might have problem but it wouldnt make any sense to only misfire at idling.
I made an appointment with mazda, and will update the thread as i go, but it is a very interesting problem with the 2.5T engine so i thought i share with everyone.
Here is to my first post, i thought this might be useful to some people in the future.
Before i dive into the details a few details regarding to the vehicle.
Vehicle was purchased Jan 2019
Currently 24090kms
Synthetic 5W30 Oil Change every 5000km or 6 month whichever comes first.
Initially I noticed a slight lump when idling sometimes, but it is not bad at all, you do notice it with your foot on the pedal and you do feel it, but i mean its so slight its barely noticable, no power loss during acceleration or cuising, no check engine light, no difference in terms of fuel economy. Now this has been going on for at least 2 month.
A week ago my check engine light turned on, and i thought its because i didt fully tighten the gas cap because i did fill up a day ago, few days passed check engine light is still there, so i decided to pull code to see.
interesting stuff i found with my cheap scan tool, i was shocked to see how many module this tool picked up.
This would make any future diagnostic easier, now back to the problem at hand.
As you can see misfire cyl3, I was curious on how bad the misfire was, so i cleared the dtc and the code did not come back, I checked the datalist for misfire count and surely you can see the misfire count go up slowly, but obviously it is not severe enough to set the check engine light.
A regular person prob would not even notice the tiny vibration, and because its not 100% misfire and it is not severe, it does not set the check engine light, but with a scan tool you can see the misfire count go up slowly as you idle.
some interesting data point i saw while going through the list, it has a counter for how much energy the engine produced, i also see a data point for engine sound enhancement, thats a weird one for me, the number does change as you drive and the car measures engine oil level in mm.
OK, anyways back to the issue at hand, the misfire is very interesting, the count would only go up when idling, during acceleration or hard acceleration there is 0 misfire count, it does not matter if car is cold or hot.
Initially i was going to swap the coils, but i assume it can not be,if coil is bad it would misfire at idle and acceleration and especially hard acceleration and same with spark plugs, i then thought perhaps the injector might have problem but it wouldnt make any sense to only misfire at idling.
I made an appointment with mazda, and will update the thread as i go, but it is a very interesting problem with the 2.5T engine so i thought i share with everyone.
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