Cylinder misfires

[Urielarroyo21]

I have a 2000 BMW 323i , code reader gave me all 6 cylinders misfiring and also gave me code that reads ( p1250 manifold absolute pressure too high) ... any ideas on what's going on ? All coils and spark plugs are changed so I know that's not the issue. I was thinking maybe the MAF ? Or could all cylinders be misfiring due to a vacuum leak ? Any other ideas ?!! Let me know what you guys think please!! Thank you!
- uriel

[MIKYZZ4]

Check fuel pressure at fuel rail.(45~50psi)

[Pelican Parts]

If it happens to be the MAF, take a look at the link below for the procedure to replace it. If you have additional questions, feel free to post a Comment just below the article and one of our techs will get back to you with more details. Best of luck!

http://www.pelicanparts.com/BMW/tech...eplacement.htm