If you have no measuring tool for the bore and the cyl looks like a hone will suffice , check the ring end gap . Feeler gauges are cheeeep . There are videos for that procedure and what's tolerable .
It's a mower cylinder. Looks brand new to me. Run it till she pukes.
You guys need to get drastic on sealing your air filters. I've used the below on all mine so far. Will leave alone till she needs a few extra pulls or cranks. Then pull apart and install a new filter.
Never pulled a carb off and looked down the intake tract and found a clean pathway. Always had a grit coated interior on the pipe/manifold. These filters do not seal 100%. Mine do now.
If you have no measuring tool for the bore and the cyl looks like a hone will suffice , check the ring end gap . Feeler gauges are cheeeep . There are videos for that procedure and what's tolerable .
In order to check the ring end gap with a feeler gauge, you have to dismantle the entire engine. A bit impractical wouldn’t you say, unless you are rebuilding it?!
I've worked on engines from lawn mowers to 2,000 HP 300 RPM TLA Clarks and I've never ever heard of dismantling a engine to check ring end gap .
There are videos on the procedure .
I've worked on engines from lawn mowers to 2,000 HP 300 RPM TLA Clarks and I've never ever heard of dismantling a engine to check ring end gap .
There are videos on the procedure .
I would not call that a small engine. We both know you have to remove engine from mower (or equipment), crack the case open, remove connecting rod end cap, and tap out piston and connecting rod. Then take off rings and insert into cylinder and check with feeler gauge to determine ring end gap.
The pston shows signs of oil useage note how it is washed clean on the top side especially the left side.
The cylinder appear to be scored especially at the bottom which indicates not enough oil changes or possible overheating.
Does the cylinder have ridge when the top ring stops? Enough to catch your finger nail on?
If you look very carefully and use a good light you can see the top ring gap between the piston and cylinder, may not be able to measure it but can get a good guess it it.
When the oil is not changed and dirt is allowed to build up in the oil the oil rings will wear and not be able to keep the oil from bypassing the piston. While the compression rings don't wear as fast and keep good compression in the engine. If dirt enters the engine thru the air intake the compression rings wear and lower compression but if oil was changed enough the oil ring will still control the oil.
Not knowing what the engine is mounted on or even the make of the engine (Briggs?) cannot determine if repair or replacement would be the best choice.
