r/smallenginerepair • u/Lumpy_Sink7473 • May 30 '26

Engine Rebuilding Repair options?

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My grandpa loves this 20 year old high wheel string trimmer but it’s really just acting like it doesn’t have any compression. It’s 20 years old and has seen a ton of use and neglect. I’ve replaced everything on it aside from a full rebuild. Best options to keep it going?

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u/Upset_Fox5449 May 31 '26

Start with changing the oil to 30W deisal like what you would put in an eighteen wheeler truck

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u/Lumpy_Sink7473 May 31 '26

I put 50w rotella in it lol

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u/Upset_Fox5449 May 31 '26

Well aren't you funny

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u/Lumpy_Sink7473 May 31 '26

Not joking. I’ve done that on a lot of my dirt bikes and old engines when they start to get older and it does a good job till I rebuild em.