Hi all,
recently i had the pleasure to rebuild my engine due to a spun rod bearing on cyl 3.
It was literally so worn out that one bearing half was as thin and bendable like aluminum foil. The Rod has some fancy coloring now too.
After the failure we opened the oil cap and the oil smell was as there was fuel in it.
With the new engine it is the same. Just after 30 miles the oil smelled like fuel. After 600 Miles now it literally still smells like fuel again. Even after driving for 100 miles and hot oil. Coming to a stop - it does not smell like oil.
I compared to a C43 2019 model (only comparison i could do in short term) with 2400 miles on it and the oil smells like oil.
I now started to watch AFR through MHD and there is something strange going on.
Bank 1 AFR drops to low 13ish values when coming to a stop at a traffic light and it needs a fews seconds to come back to the same level as bank 2. Always with every stop.
Also when getting off the throttle bank 2 afr seems to go immediately to 234 but bank 1 not. Feels like its taking forever.
I had to accelerate again but you can see the value dropping shortly to 13 something.
I have my doubts that this is normal?!
My next steps are to control the spark plugs and if one or more seems to be running rich.
Oil changed after 600 miles and new filter. So far no metallic parts. I am really paranoid because of the smell.
I also have a log of what i mean:
https://datazap.me/u/johndaviz/afr-rich?log=0&data=3-15-16-22
recently i had the pleasure to rebuild my engine due to a spun rod bearing on cyl 3.
It was literally so worn out that one bearing half was as thin and bendable like aluminum foil. The Rod has some fancy coloring now too.
After the failure we opened the oil cap and the oil smell was as there was fuel in it.
With the new engine it is the same. Just after 30 miles the oil smelled like fuel. After 600 Miles now it literally still smells like fuel again. Even after driving for 100 miles and hot oil. Coming to a stop - it does not smell like oil.
I compared to a C43 2019 model (only comparison i could do in short term) with 2400 miles on it and the oil smells like oil.
I now started to watch AFR through MHD and there is something strange going on.
Bank 1 AFR drops to low 13ish values when coming to a stop at a traffic light and it needs a fews seconds to come back to the same level as bank 2. Always with every stop.
Also when getting off the throttle bank 2 afr seems to go immediately to 234 but bank 1 not. Feels like its taking forever.
I had to accelerate again but you can see the value dropping shortly to 13 something.
I have my doubts that this is normal?!
My next steps are to control the spark plugs and if one or more seems to be running rich.
Oil changed after 600 miles and new filter. So far no metallic parts. I am really paranoid because of the smell.
I also have a log of what i mean:
https://datazap.me/u/johndaviz/afr-rich?log=0&data=3-15-16-22