2016 C250d No Crank No Start
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Joined: Jul 2024
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2016 C250d
2016 C250d No Crank No Start
This is a bit of a strange one, I'm currently working on a C250d that had water sucked into the intake
What I had done was
1. Flushed the oil
2. Took out injectors and cranked engine (until battery died) - Sunday
3. Put battery on charge overnight - Sunday
4. Cranked any remaining water out, put battery back on charge - Monday
5. Tried to crank engine on Tuesday, however no crank at all
So far I have
1. Checked fuse 111 (starter fuse)
2. Put 12V into the starter relay and measured resistance all was normal
3. Tried jump starting the car
I've looked through WIS to try and see what wire I can give 12V so I can test the starter motor but I cannot make sense of these circuit diagrams
This is the first time I've ever worked on a Merc so any help would be appreciated!
What I had done was
1. Flushed the oil
2. Took out injectors and cranked engine (until battery died) - Sunday
3. Put battery on charge overnight - Sunday
4. Cranked any remaining water out, put battery back on charge - Monday
5. Tried to crank engine on Tuesday, however no crank at all
So far I have
1. Checked fuse 111 (starter fuse)
2. Put 12V into the starter relay and measured resistance all was normal
3. Tried jump starting the car
I've looked through WIS to try and see what wire I can give 12V so I can test the starter motor but I cannot make sense of these circuit diagrams
This is the first time I've ever worked on a Merc so any help would be appreciated!
MBWorld Fanatic!
Joined: Jun 2012
Posts: 1,229
Likes: 188
From: Toronto
2022 E53 AMG
First can you turn the engine manually?
If the engine turns manually check that timing is correct. You will need to make sure the engine is top dead center, then look in each cylinder to see what each valve is doing. Water in an engine while an engine is spinning takes more than just flushing out an engine.. you have to make sure the engine is not damaged by looking, manually turning it, and seeing inside the engine.
You could have something bend.
If the engine turns manually check that timing is correct. You will need to make sure the engine is top dead center, then look in each cylinder to see what each valve is doing. Water in an engine while an engine is spinning takes more than just flushing out an engine.. you have to make sure the engine is not damaged by looking, manually turning it, and seeing inside the engine.
You could have something bend.
