tool for pulling m103 spark plug wires
 

I went out to change the plugs on my new 300e today and realized I don't have a safe way to pull the wires. This is my first mercedes gasser (I have a diesel) and my '74 alfa doesn't have the plugs buried in the head. So my question is two part

-- how far down do I need to grip the boots to safely pull them and
-- what's the best < $20 tool for the job ?

I think I have the right spark plug socket for the job.


Geoffrey

I couldn't find one, so I made one out of a coat hanger. I took a short piece, bent it into a U shape, then bent each end so it could grab the tabs on the side of the boot. I can reach in and remove each one out without pulling on the wire.

You should be able to grab the m103 spark plug boot by your hand. It's not buried down deep, as the boot is still exposed.

Adding a touch of anti seize prior to reinstalling the spark plug wires sure helps for the next time too.

Kent has one

https://www.youtube.com/watch?v=iv46dIo7WcE

I just pulled mine by hand and wiggled it gently to ensure I did not break the boot. No special tool required.

Hi,

there is a special Tools for the M103 Engine
I bought it at the Mercedes Dealer years ago
103 589 00 37 00

To pull the plugs is a piece of cake.

Best regards from Germany
Marcel

I use a pair of needle nose pliers to grab the crimped side of the metal end.

I went to advanced and bought pullers,not much money.Also use that grease only on the sparkplug wire boot,do not get on the tip of plug

I bought a Snap-On tool back in '88 when I bought my 190E 2.6... expensive, but worth it to save the plug wires from damage.

Smear a thin film of silicone grease on the inside of the boots. That will keep them from seizing onto the insulator, so they should come off without too much effort next time.

Duke

Same here, works like a charm! :)

I don't quite understand why that special tool even exists... :confused:

My Snap On tool has plastic covered jaws, so they leave no marks on the RFI shield.

Duke