E90Post
 


TNT Racewerks
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Cranks, but no start after valve cover replacement



Reply
 
Thread Tools Search this Thread
      02-19-2021, 03:05 PM   #1
bpete125
Registered
0
Rep
1
Posts

Drives: 2008 328i Sedan A6
Join Date: Mar 2019
Location: Honolulu, HI

iTrader: (0)

Cranks, but no start after valve cover replacement

2008 328i sedan N51 auto. Last 7 of vin: F008913
Worked performed that triggered issue: Replaced Valve cover and eccentric shaft sensor (ECS). Car ran perfect before work. I've also replaced the valve cover perimeter gasket previously without this issue.

Car cranks fine but will not start.
Only fault code: CAS A10A: No description found

I'll list the troubleshooting steps I've performed:
-Spark plugs and coils have less than 40k miles on them
-Car has fresh fuel
-Battery is less than 2 years old fully charged. On a trickle charger between troubleshooting sessions.
-Ground strap on passenger side is clean and securely connected.
-Using Bimmegeeks Protool master license, primed fuel pump and can hear it primed.
-Using protools, calibrated valvetronic motor
-Checked fuses F4, F37, F39. Checked them also with a test light with the ignition on to ensure receiving power.
-Checked all other fuses that had anything to do with DME or ignition etc.
-Terminal 87 on live feed show 12v with ignition on, 10.5v during cranking
-RPM shows value while cranking.

Without additional fault codes I'm out of ideas, currently going sensor to sensor ensuring they have power with ignition on. You need fuel, compression, and spark to run an engine. Something is causing it not to spark. Any help is greatly appreciated, have to have to the car moved in 4 days or it gets towed.
Appreciate 0
      02-19-2021, 10:23 PM   #2
e91Owner
e91Owner
United_States
420
Rep
1,128
Posts

Drives: 2011 e91 & 2010 e60
Join Date: Mar 2018
Location: Out of the Office

iTrader: (0)

Quote:
Originally Posted by bpete125 View Post
2008 328i sedan N51 auto. Last 7 of vin: F008913
Worked performed that triggered issue: Replaced Valve cover and eccentric shaft sensor (ECS). Car ran perfect before work. I've also replaced the valve cover perimeter gasket previously without this issue.

Car cranks fine but will not start.
Only fault code: CAS A10A: No description found

I'll list the troubleshooting steps I've performed:
-Spark plugs and coils have less than 40k miles on them
-Car has fresh fuel
-Battery is less than 2 years old fully charged. On a trickle charger between troubleshooting sessions.
-Ground strap on passenger side is clean and securely connected.
-Using Bimmegeeks Protool master license, primed fuel pump and can hear it primed.
-Using protools, calibrated valvetronic motor
-Checked fuses F4, F37, F39. Checked them also with a test light with the ignition on to ensure receiving power.
-Checked all other fuses that had anything to do with DME or ignition etc.
-Terminal 87 on live feed show 12v with ignition on, 10.5v during cranking
-RPM shows value while cranking.

Without additional fault codes I'm out of ideas, currently going sensor to sensor ensuring they have power with ignition on. You need fuel, compression, and spark to run an engine. Something is causing it not to spark. Any help is greatly appreciated, have to have to the car moved in 4 days or it gets towed.
A10A just follows the crank without start, so that in and of itself is not diagnostic.

I would think you'd get some associated codes, if they were disconnected, but double checking the connections on the fuel rail and anything else you disconnected to gain access to remove the valve cover.
Appreciate 0
Reply

Bookmarks

Tags
no spark, no start

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 07:50 AM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST