BMW e90 n51 n52 No Compression No Start Culprit

2009 BMW 328i e90 n51 won't start. Turns over fast with no compression. Broken bolt culprit. Head rebuild needed.

[@rowdymoto636]

Dude this might be whats wrong with mine i parked it for 2 days then it started ran like shit then died and had low compression across all cyclinders

[@Gracelynjones281]

Thanks dude! have one of these in the shop right now with the same exact issue! Gotta see which way to go from here!

[@godly8320]

I’m curious to know what happened next.....I recently also purchased a bmw from Facebook market with the same exact issue black e90 2009 for 800$ with a clean title I have the engine but not really sure I won’t to tackle this job yet

[@I_Ali_I]

Did it ever knock? I’m having some type of head issue on a 07 n51 with 105k, I did a pull to 5-6k rpm and the next thing I know I have misfires on 6,5,4,2 and it’s knocking insanely loud. I don’t get any other codes besides misfires. It sounds like the normal lifter tick except it’s 100x louder, I was thinking it could be a lifter spring, or this. Besides that idk what else could be wrong, I’ve never heard of these engines ever having these types of failures before.

[@alfonsosantana3790]

Camshafts should spin during start up???

[@DeejayMC25]

hey i have this issue but my cams are turning fine

[@raven69600]

I’m having the exact problem with my son’s BMW, I replaced the sensors and still no start. My mechanic said the engine has no compression just by the speed of the motor when cranking. I don’t know if he even did a proper test now after seeing this video. I’m guessing I’ll try this and hopefully it’s this simple!

[@GeorgeAusters]

Were you intake valves damaged?

[@smithaustin2009]

I have a 2008 X5 with the N52 and have the same issue. I see you posted a video about restoring the cam but it looks like at the start you must have already removed the broken piece of the bolt. How did you do that?

[@jimmycardozo428]

Hey, I just find out that I have the same problem mine is a 328i 2010 Sulev, I wanted to ask you what you did finally

[@chungusaurusr3x372]

Thank you

[@jakem814]

Hey bro thanks for making this video. I've been looking for something like this, as i'm in the exact same situation; engine ate belt, no start after. It would turn over, but i didn't realize the exhaust came was seized up, and the bolt broke clean off. I actually have a spare n52 head, so i'm thinking to just put the cam from that one onto this one. Is that essentially what you did? Did you have any internal damages? i've been trying compression tests and they are all very low (90ish to about 120psi max). How did you determine valves/pistons were okay? Trying to find out if I need to go further in and replace head gasket, or if the bottom is toast, just replace the whole thing. Thanks again!

[@HolyShitAccess]

I hope to god you just slapped another n52 and call it a day. they are so cheep on marketplace