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PeachParts Mercedes-Benz Forum (http://www.peachparts.com/shopforum/)
-   Diesel Discussion (http://www.peachparts.com/shopforum/diesel-discussion/)
-   -   Using compressed air to blow out carbon from glow plug holes (http://www.peachparts.com/shopforum/diesel-discussion/389154-using-compressed-air-blow-out-carbon-glow-plug-holes.html)

shertex 10-16-2017 09:48 PM
Quote:
Originally Posted by MPH (Post 3756498)
Where did you purchase your brushes?
https://www.amazon.com/Cleaning-Brushes-Washing-Cleaner-Bristle/dp/B073DZTW6T/ref=sr_1_2?ie=UTF8&qid=1508204885&sr=8-2&keywords=cylindrical+brush+kit

dieselmania 10-16-2017 10:40 PM
Quote:
Originally Posted by Clemson88 (Post 3756545)
I use heavy grease on the reamer when I do glowplugs. Most of the carbon comes out then.

Turning the engine over after reaming glow plug hole blows most of what the greasy reamer misses.
Exactly what I did, worked great.

funola 10-17-2017 11:57 AM
Quote:
Originally Posted by Clemson88 (Post 3756545)
I use a series of rubber hoses with duct tape wrapped around the end as a seal ring. Wrapping a few rounds of tape on a 5/8" hose makes it fit tight into the vac hose. The tape forms a really good seal which isn't necessary but it is quite efficient.

I never blow anything into a cylinder on purpose. I use heavy grease on the reamer when I do glowplugs. Most of the carbon comes out then.

Turning the engine over after reaming glow plug hole blows most of what the greasy reamer misses.
Turning the engine over after glow plug reaming could possibly suck in some carbon during the intake stroke with some of it landing on/ stuck to valve seat. Safest bet is DO NOT turn engine over and use grease on the reamer then vacuum the rest out.

funola 10-17-2017 12:00 PM
Quote:
Originally Posted by Simpler=Better (Post 3755747)
You can use compressed air to pull a vacuum, just blow air through a tee with both ends open. The tee side will pull a vacuum:
https://i.pinimg.com/236x/2e/1a/20/2...made-tools.jpg
This is another good method if you have compressed air. If you tie wrap a breathable cloth bag to the discharge port you can capture the carbon.

Zulfiqar 10-17-2017 06:15 PM
why not just isolate the starter solenoid wiring and turn the engine over by hot wiring the starter (like you do on a compression test on these engines)

Any carbon, dust, tools etc will be shoved out of those holes with super high pressure from the cylinders.


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