W209 clk 270 cdi

[Andy67]

Hi to every one, this is my first post since getting my 270, first Benz, have a question about starting them,,

When I start it from cold and wait for the glow plus to go out then start the engine, starts first time, but then the glow plus light would come back on again stay there for about 30 seconds, is this a fault.


cheers andy

 

[MORAG16]

You have one or more faulty glow plugs

 

[Terry_]

+1 a faulty glow plug or 2

 

[Donaldo407]

CLK Cdi cranks but wont start

My 2.7 CLK Cdi 2005 cranks but wont start in the mornings for the last 2 weeks,. i end up spraying easy start spray into the air console and then it starts and does so for the rest of the day until the next morning again. i have changed o rings seal, air filter, fuel and oil filter. i have even put diesel fuel injector cleaner which seemed to have helped for a few days without the problem reoccuring. but this morning with the rains and cold it wont start until i sprayed the easy start again...any ideas?

 

[Terry_]

If the pipes are air tight them i would imagine a fuel injector leaking off too much

 

[sspeed]

My 2.7 CLK Cdi 2005 cranks but wont start in the mornings for the last 2 weeks,. i end up spraying easy start spray into the air console and then it starts and does so for the rest of the day until the next morning again. i have changed o rings seal, air filter, fuel and oil filter. i have even put diesel fuel injector cleaner which seemed to have helped for a few days without the problem reoccuring. but this morning with the rains and cold it wont start until i sprayed the easy start again...any ideas?

Look at the photos below and note the slight damp patch (diesel)..
This means the O rings are going hard and no longer air tight...
Buy a set and replace them all..If I remember correctly there are 4 of them.
The usual ones that fail are the ones arrowed. That part of the engine gets red hot/ cold thousands of times and so the rubber eventually gives up..
The others don't get anything like as hot

 

[srpj1]

Sounds like you need to bleed the diesel system through the bleed valve by the diesel rail , it needs to be pressure bled

 

[mersum1es]

My 2.7 CLK Cdi 2005 cranks but wont start in the mornings for the last 2 weeks,. i end up spraying easy start spray into the air console and then it starts and does so for the rest of the day until the next morning again. i have changed o rings seal, air filter, fuel and oil filter. i have even put diesel fuel injector cleaner which seemed to have helped for a few days without the problem reoccuring. but this morning with the rains and cold it wont start until i sprayed the easy start again...any ideas?

I would say its bad injector. Do leak of test, check their electrical correction values (via SDS).

No bleeding needed...