Weird Smell

[tigerclaws1318]

I don't know if anyone else gets this smell but it happens everytime I rev the engine at around 6000rpm. I normally do not beat on the car but when I do floor it some nasty weird smell comes into the car. Today I was in a underground parking lot and wanted to see how the exhaust would sound and revved it to 6000rpm twice in park and the smell happened.

Could be the oil just getting really hot producing a smell but who knows.

[qship96]

Not a good idea to rev motor to high RPM under no load conditions!!!

The smell may be oil seeping past valvecover gaskets onto hot exhaust?

[New2Import]

I think the M has a poor PCV system. That explains our blue smoke start up. When you rev or make the PCV work it sucks oil up in high compression engines. I got this on my SS (383 12.1 compression) and I installed a oil separator and it cured the oil smell and WOT blue smoke burst as well as start up blue smoke. Once my oil consumption test is done Im gonna install one on the M. BMWs run these oil separators as well as some GM vehicles with high compression. Here is a pic of the separator. I have to drail it about every 1K miles. You can see a little oil in this pic. That is just from a test idle and a few revs and you can see oil already in the tube. If the separator is not there just think that oil is in the intake and has to go some place and thats out the exhaust on top of the piston. Results in poor mileage. I have 30K on my M and the mileage is slowing going down and down.


Modified by New2Import at 9:25 PM 6/20/2009