Using compressed air to blow out carbon from glow plug holes - Page 2 - PeachParts Mercedes-Benz Forum

shertex · #16 10-16-2017, 09:48 PM

Quote:

Originally Posted by MPH

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 · #17 10-16-2017, 10:40 PM

Quote:

Originally Posted by Clemson88

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 · #18 10-17-2017, 11:57 AM

Quote:

Originally Posted by Clemson88

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 · #19 10-17-2017, 12:00 PM

Quote:

Originally Posted by Simpler=Better

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:

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 · #20 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.