I've a question about crankcase vent systems.
When I fitted the BMW M52 engine into my Triumph, I blocked off the hole in the inlet manifold and just vented the crankcase pressure to atmosphere using a long hose with a filter halfway along which allows any oil in the pipe to drain back to the sump.
This has worked fine, no pressure build up when you remove rocker cover cap, but the plugs are always black, as if it's running rich.
The standard DME/ECU has been modified to work in it's new home, also to give a higher rev limit and a few more HP.
So my question is, will disconnecting the vent system make the engine run rich, or is more likely to be the re-mapped ECU?
I ask because the point where the fumes from the crankcase enter the inlet manifold is past all the sensors that measure airflow etc. for the ECU, so is the ECU just assuming that the inlet air is “dirty” and will add extra fuel to ensure a good “burn”?
Thanks
When I fitted the BMW M52 engine into my Triumph, I blocked off the hole in the inlet manifold and just vented the crankcase pressure to atmosphere using a long hose with a filter halfway along which allows any oil in the pipe to drain back to the sump.
This has worked fine, no pressure build up when you remove rocker cover cap, but the plugs are always black, as if it's running rich.
The standard DME/ECU has been modified to work in it's new home, also to give a higher rev limit and a few more HP.
So my question is, will disconnecting the vent system make the engine run rich, or is more likely to be the re-mapped ECU?
I ask because the point where the fumes from the crankcase enter the inlet manifold is past all the sensors that measure airflow etc. for the ECU, so is the ECU just assuming that the inlet air is “dirty” and will add extra fuel to ensure a good “burn”?
Thanks
