W211 OM642 Glow plug layout

[DSM10000]

Good evening all.

I have a glow plug light that illuminates shortly after starting the engine for some time . Starting is fine regardless of temperature but I will replace it.

Would anyone now how the plugs are numbered in each bank?

Many thanks

 

[AndrewOl]

Same as the cylinder numbers,123 on the left looking at it from the front. Watch out though as they snap easily and can be a pig to get out.

 

[clk320x]

Good evening all.

I have a glow plug light that illuminates shortly after starting the engine for some time . Starting is fine regardless of temperature but I will replace it.

Would anyone now how the plugs are numbered in each bank?

Many thanks

Can’t help with the order but when my mechanic did this job he found they were seized in, he used a spray called ‘plus gas’ to free it. Worth a look. He sprayed it in and told me to come back a few days later and it came out ok.

 

[W1ghty]

Good evening all.

I have a glow plug light that illuminates shortly after starting the engine for some time . Starting is fine regardless of temperature but I will replace it.

Would anyone now how the plugs are numbered in each bank?

Many thanks

Unless they were all changed in the last couple of years might be worth doing all 6

 

[clk320x]

Unless they were all changed in the last couple of years might be worth doing all 6

What would be the advantage? (Genuinely curious)

 

[DSM10000]

Can’t help with the order but when my mechanic did this job he found they were seized in, he used a spray called ‘plus gas’ to free it. Worth a look. He sprayed it in and told me to come back a few days later and it came out ok.

I know that they can be "difficult"

I bought this :

 

[clk320x]

I know that they can be "difficult"

I bought this :View attachment 138762

Excellent. Good luck with it.

 

[DSM10000]

Unless they were all changed in the last couple of years might be worth doing all 6

Had 4 changed in the past couple of years but I agree with the thought!

 

[DSM10000]

Excellent. Good luck with it.

I figured that anything with long German words had to be good

 

[DSM10000]

What would be the advantage? (Genuinely curious)

Assuming all were fitted at the same time then they are likely to fail around the same time.

 

[DSM10000]

Same as the cylinder numbers,123 on the left looking at it from the front. Watch out though as they snap easily and can be a pig to get out.

Thanks.

Is that 1, 2, 3 from the firewall?

1 being closest to the firewall and 3 closest to the radiator and the same for the right bank with 6 being closest to the radiator?

 

[W1ghty]

What would be the advantage? (Genuinely curious)

My understanding is that they gradually all lose efficiency over time , the cdi engines also use the plugs not just at start up .
Also if you have to take the batwing off and change the orange turbo seal because you disturbed it you might as well change all the plugs .
A failed glow “can “ also take out the Gp relay module when it goes .
Obviously people’s budgets vary , so not everyone will want to change them all . I wouldn’t either if I’d very recently changed the rest and one went again .

 

[W1ghty]

Had 4 changed in the past couple of years but I agree with the thought!

So change the failed one and the other one that’s not been changed yet ?

 

[DSM10000]

So change the failed one and the other one that’s not been changed yet ?

I have 2 genuine MB glow plugs in my spares stock

 

[clk320x]

My understanding is that they gradually all lose efficiency over time , the cdi engines also use the plugs not just at start up .
Also if you have to take the batwing off and change the orange turbo seal because you disturbed it you might as well change all the plugs .
A failed glow “can “ also take out the Gp relay module when it goes .
Obviously people’s budgets vary , so not everyone will want to change them all . I wouldn’t either if I’d very recently changed the rest and one went again .

Interesting thanks for that.

 

[AndrewOl]

Thanks.

Is that 1, 2, 3 from the firewall?

1 being closest to the firewall and 3 closest to the radiator and the same for the right bank with 6 being closest to the radiator?

Other way round. No 1 is on the front of the left bank looking from the front of the car. No 4 on the front of the right bank.

 

[DSM10000]

Other way round. No 1 is on the front of the left bank looking from the front of the car. No 4 on the front of the right bank.

Thank you for the clarity.