So… I was very confused about my readings on the cylinder smooth running values and since I had no idea of what they are or what are the correct readings, I have been doing some digging.
this post by no means is considered by me to be correct, it is just what I have gathered from the internet and some books I found in the public library.
Here it goes.
the engine has to be warm and these figures make sense only in idle.
the closer they are to Zero the better they are.
differences between them should not be more than 10%.
My values were all over the place, from 1.25 up to 3.40.
so I started with a compression test.
all four cylinders were within spec with no deviations.
continued with an eye inspection and some carb cleaner spray on air hoses that lead me to false diagnosis, as when I finally grew a pair and removed the air manifold, I saw that the air hoses of the injectors were shot, so I replaced them.
the numbers then varied from 0.25 up to 1.20 and I was not satisfied.
swapped the ignition coil with a second hand one and had better results but still not consistent.
ordered a new coil (its an M43 and has one with four outlets) and installed that.
the values became higher (Probably from better spark) but were somehow in a closer range (1.25-1.00-1.35-1.20) but still over zero and surely not inder 1.0 that some of them were before.
so decided to change the spark plugs (photo of the old one attached)
went with BREQ laser cut and changed only one, in cylinder 3.
smooth runnin values of cylinder 3 dropped to 0 up to 0.25.
decided to swap also the injector in cylinder 3 and it took me 3 long hours to remove all the intake and the pressure lines.
installed a brand new injector from a set that a friend bought for his car (E46) and had a reading again.
0 to 0.01.
So definitely spark+injector=success.
Next steps, dismantle again everything during the holidays, clean the throttle body with carb cleaner, remove injectors and soak into injector cleaner and ultrasonic these mfkrs with the machine I bought (yessir tested it already with some rusty bolts and nuts).
I am in the process of making my own diy hose mechanism to pressure clean them after this (and will post a video) and finally install them back.
then I will post my readings (oh did I say that I also bought a new fuel filter).
Generally I am satisfied with what cylinder No3 is telling me so lets hope all this time spent is worth.
if the injectors do not appear to be in good shape (spray pattern etc) on my self made tester/cleaner diy, I will take them to a professional and if they are hopeless I will replace them.
but my goal is to fix these values myself and be proud of it.
Cheers
this post by no means is considered by me to be correct, it is just what I have gathered from the internet and some books I found in the public library.
Here it goes.
the engine has to be warm and these figures make sense only in idle.
the closer they are to Zero the better they are.
differences between them should not be more than 10%.
My values were all over the place, from 1.25 up to 3.40.
so I started with a compression test.
all four cylinders were within spec with no deviations.
continued with an eye inspection and some carb cleaner spray on air hoses that lead me to false diagnosis, as when I finally grew a pair and removed the air manifold, I saw that the air hoses of the injectors were shot, so I replaced them.
the numbers then varied from 0.25 up to 1.20 and I was not satisfied.
swapped the ignition coil with a second hand one and had better results but still not consistent.
ordered a new coil (its an M43 and has one with four outlets) and installed that.
the values became higher (Probably from better spark) but were somehow in a closer range (1.25-1.00-1.35-1.20) but still over zero and surely not inder 1.0 that some of them were before.
so decided to change the spark plugs (photo of the old one attached)
went with BREQ laser cut and changed only one, in cylinder 3.
smooth runnin values of cylinder 3 dropped to 0 up to 0.25.
decided to swap also the injector in cylinder 3 and it took me 3 long hours to remove all the intake and the pressure lines.
installed a brand new injector from a set that a friend bought for his car (E46) and had a reading again.
0 to 0.01.
So definitely spark+injector=success.
Next steps, dismantle again everything during the holidays, clean the throttle body with carb cleaner, remove injectors and soak into injector cleaner and ultrasonic these mfkrs with the machine I bought (yessir tested it already with some rusty bolts and nuts).
I am in the process of making my own diy hose mechanism to pressure clean them after this (and will post a video) and finally install them back.
then I will post my readings (oh did I say that I also bought a new fuel filter).
Generally I am satisfied with what cylinder No3 is telling me so lets hope all this time spent is worth.
if the injectors do not appear to be in good shape (spray pattern etc) on my self made tester/cleaner diy, I will take them to a professional and if they are hopeless I will replace them.
but my goal is to fix these values myself and be proud of it.
Cheers
. Good luck
