I recently purchased a port injection. I switched over to full e85. Now I can smell the ethanol in the oil, and what is worrying me is the water like ( maybe fuel) in the BMS catch can now.
It is possible that my car was already dying before installing the PI, and I can only smell the ethanol in the oil now because of the distinct smell it has. But I wanted to share and get opinions on things I should do before pulling the motor.
07 335i w/ 108k now, BMS catch can with RB PCV, FBO with details on signature.
Been running 20 psi on 93 and occasionally 25 when using meth.
Possible cause:
1) Leaking PI or stock injectors
2) Bad piston rings
3) Bad Valve Stems
Tested so far:
1) Pull them out and cranked the motor, no leaks
Plugs don't look wet, they are pretty dry and white
Index injectors #12
Bought them from Rockauto about two years ago
Standard Motor Products ( FJ1050)
2) Bad rings?
Leak down test- with the engine cold.
Given we have no oil dipstick, I figured it would be best to take the oil out ( since it had to be replaced anyway) and leave the oil drain plug open to hear air rushing thru.
Cylidners:
1- 4%
2- 8%
3- 4%
4- 4%
5- 18% - added some oil and went down to ~6%
6- 5%
Compression test - Cold engine
1- 150
2- 140
3- 140
4- 150
5- 180 - Cylinder still had oil from leak down test
6- 150 psi
I soaked the cylinders overnight with injector cleaner just to see if the problem is gunk in the piston rings. Sucked the cleaner out and ran the car.
Compression recheck - Warn engine
1-160
2-140
3-145
4-155
5-145
6-150
#5 compression doesn't follow my leak down test... did the leak test again on cylinder 5 and saw the same number.. will check a 3rd time with a dial gauge to find TDC ( but my method seem to work on other cylinders so I kinda trust the numbers..)
If the rings are worn out, to the point that raw fuel would go pass them, I would expect the car to be smoking like crazy, but it barely does.
3) Bad valve stems?
Flushed the oil again, and got a test tune form my tuner - with PI turned off, drove the car pushing ~17 psi on straight e85 - direct injection only
Now only air in going in through the manifold.. so if it was valve stems problem would have gone away?
Still saw the liquid in the catch can - the picture below is actually from this time driving
The only thing still pending is for me to physically remove the PI, just in case the PI injectors are leaking even with no power? Not sure how likely this is.. but will try
The log seems fine according to my tuner, but I have it attached here in case anyone catches anything.
Inputs? Does the catch can accumulation looks normal for e85? Am I freaking out for no reason here...
It is possible that my car was already dying before installing the PI, and I can only smell the ethanol in the oil now because of the distinct smell it has. But I wanted to share and get opinions on things I should do before pulling the motor.
07 335i w/ 108k now, BMS catch can with RB PCV, FBO with details on signature.
Been running 20 psi on 93 and occasionally 25 when using meth.
Possible cause:
1) Leaking PI or stock injectors
2) Bad piston rings
3) Bad Valve Stems
Tested so far:
1) Pull them out and cranked the motor, no leaks
Plugs don't look wet, they are pretty dry and white
Index injectors #12
Bought them from Rockauto about two years ago
Standard Motor Products ( FJ1050)
2) Bad rings?
Leak down test- with the engine cold.
Given we have no oil dipstick, I figured it would be best to take the oil out ( since it had to be replaced anyway) and leave the oil drain plug open to hear air rushing thru.
Cylidners:
1- 4%
2- 8%
3- 4%
4- 4%
5- 18% - added some oil and went down to ~6%
6- 5%
Compression test - Cold engine
1- 150
2- 140
3- 140
4- 150
5- 180 - Cylinder still had oil from leak down test
6- 150 psi
I soaked the cylinders overnight with injector cleaner just to see if the problem is gunk in the piston rings. Sucked the cleaner out and ran the car.
Compression recheck - Warn engine
1-160
2-140
3-145
4-155
5-145
6-150
#5 compression doesn't follow my leak down test... did the leak test again on cylinder 5 and saw the same number.. will check a 3rd time with a dial gauge to find TDC ( but my method seem to work on other cylinders so I kinda trust the numbers..)
If the rings are worn out, to the point that raw fuel would go pass them, I would expect the car to be smoking like crazy, but it barely does.
3) Bad valve stems?
Flushed the oil again, and got a test tune form my tuner - with PI turned off, drove the car pushing ~17 psi on straight e85 - direct injection only
Now only air in going in through the manifold.. so if it was valve stems problem would have gone away?
Still saw the liquid in the catch can - the picture below is actually from this time driving
The only thing still pending is for me to physically remove the PI, just in case the PI injectors are leaking even with no power? Not sure how likely this is.. but will try
The log seems fine according to my tuner, but I have it attached here in case anyone catches anything.
Inputs? Does the catch can accumulation looks normal for e85? Am I freaking out for no reason here...