E90 that doesnt want to live

[Speednz]

Hello friends,

I am a mechanic in training and have a few BMW's that I attempt to keep running. A while ago I purchased a 06 325i that did not start. The owner, stated he was changing the timing cover, stripped a bolt, and when he put it back it started after a jump but seemed to be in limp mode. He thought they had messed something up with the jump start due to it not having a battery hooked up at the time.. He then said a day later it would not start

The car cranked when I purchased it and threw several.. several codes. probably 20 codes I have written down somewhere. I started with the simple stuff, its getting fuel, its getting spark, but has a relatively low compression. I believe I had somewhere near 80-90PSI (dry) on 6. I then went to replace both cam sensors since it was throwing codes for both. Also the crank sensor due to it having a erratic RPM when a snap on scanner was plugged in. The RPM is now steady but still will not start. I have gone through and fixed each code and it is now down to 3 codes.

P1727-Can message signal error / coast clutch inductive signature malfunction
P1417-Throttle Control Incorrect Air Supply
P1624-Malfunction Indicator Lamp Request Signal Active

The previous owner should not have attempted to tackle the valve cover. He admitted he didnt properly back out the eccentric shaft actuator nor did he replace the eccentric shaft sensor that he may have damaged.

None of these codes would prevent it from starting right? I feel that the timing off but I would think that my compression numbers confirm the mechanical timing is correct and its just a worn out engine. As previously stated, he did not touch timing, just the valve cover gasket.

The engine cranks, and it almost sounds like it combusts maybe once every 5 seconds or so. It really wants to start but wont. Please share any experience or thoughts on this issue!! Thank you so much.

[Dmitry at Pelican Parts]

Have you fixed the valve cover issue? If not, check out the diy tech article below; it should greatly help you during the process. If you have any questions and need more info, feel free to post a Comment just below the article and someone will get back to you with more details. Best of luck!

BMW E90 Valve Cover Seal Replacement | E91, E92, E93 | Pelican Parts DIY Maintenance Article


-Dmitry