Electrician 2
New member
After some web inquiries and research on how to proceed with my injector seal replacement project, I've opted to go for the factory Mercedes kit for the job. The consequences for messing the job up are pretty high, so I didn't want to take any chances.
I think cleaning the bores is pretty straightforward - and a shotgun cleaning kit would probably do the job just fine for this task, as others have mentioned.
I was mostly nervous about removal of the injectors without damaging them, plugging the injector to combustion chamber opening to prevent the cleaning gunk from falling in and properly cleaning and prepping the seats. The factory kit addresses all of this.
This is a repair I felt comfortable taking on, so I figure this cost will be easily recouped in money saved over labor at the shop for the job, and I will probably use this toolset at least a few times over the life of this engine.
Tools ---
$332.05 out the door
Mercedes dealer sourced.
Round brush (seat cleaning and chamber plug) 611 589 00 68 00
Cylinder brush (bore cleaning) 668 589 68 00
Impact extractor 602 589 00 33 00
Threaded adapter (extractor to injector) 642 589 01 33 00
Wurth Throttle Body Cleaner (could probably just use carb cleaner)
Parts ---
$41.09 shipped
Sourced the seals and bolts kit from FCP, not the dealer. No good reason. Just happened.
https://www.fcpeuro.com/products/mercedes-om642-fuel-injector-seal-kit-genuine-mercedes-539384
$373.14 Total cost + plus small wire brush, rags and cleaner
Pictures ---
Attached
Manual ---
Attached
I think cleaning the bores is pretty straightforward - and a shotgun cleaning kit would probably do the job just fine for this task, as others have mentioned.
I was mostly nervous about removal of the injectors without damaging them, plugging the injector to combustion chamber opening to prevent the cleaning gunk from falling in and properly cleaning and prepping the seats. The factory kit addresses all of this.
This is a repair I felt comfortable taking on, so I figure this cost will be easily recouped in money saved over labor at the shop for the job, and I will probably use this toolset at least a few times over the life of this engine.
Tools ---
$332.05 out the door
Mercedes dealer sourced.
Round brush (seat cleaning and chamber plug) 611 589 00 68 00
Cylinder brush (bore cleaning) 668 589 68 00
Impact extractor 602 589 00 33 00
Threaded adapter (extractor to injector) 642 589 01 33 00
Wurth Throttle Body Cleaner (could probably just use carb cleaner)
Parts ---
$41.09 shipped
Sourced the seals and bolts kit from FCP, not the dealer. No good reason. Just happened.
https://www.fcpeuro.com/products/mercedes-om642-fuel-injector-seal-kit-genuine-mercedes-539384
$373.14 Total cost + plus small wire brush, rags and cleaner
Pictures ---
Attached
Manual ---
Attached
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