How to internally clean a glow engine:

While trying to find information about the best way to internally clean one of my glow engines, I have found this good article, which I would like to share:

http://findarticles.com/p/articles/m...5/?tag=content

Not a bad article, covers enough basics.

I find that poor idle is often due to varnish.

I also find that 50-50 mix of antifreeze and water in crookpot on low for 24 hours removes most of the varnish. Scotch bright works as well as steel wool.

After crockpot, rise in cold water, varnish floats away.

I use an ultra sonic cleaner with dishwasher soap and water to clean after the crockpot. This really cleans the pores of the metal and especially the bearings.

After you are done with the water, place the parts in a warm oven at 250 degrees to drive out all mosture. When you remove parts from the oven (10-15 minutes) lightly oil all steel parts or moving parts.

It is really best to use new cir-clips if you remove the wrist pin from the piston. Make sure the clip (the small music wire clip mentioned) is well seated in the groove, with an exacto knife tip pushing it around. If it comes out, the piston and sleeve will be destroyed.

Reassemble engine, oil lightly, and go run. After the first run, check the torque of the head bolts, in fact do it for a couple runs. Don't go gorrilla on the bolts, just even torque on each.

I use full strength anti-freeze in the crockpot. remove the carb, back plate and glow plug on 2-strokes. On 4-strokes I remove the head too. About 4 to 10 hours on low gets most of it. Whats left of the carbon on the piston, head, valves and valve passages is at least soft enough to remove easily with a dremel with a wire brush. Rinse with water, air tool oil for reassembly. Got a saito 120 with about 120 hours on it thats been cleaned about 3 or 4 times that way.
Edwin