L1500 Power Loss

bondobuilder

New member
Jan 11, 2025
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Victoria, BC
Hello all! Thanks for the add

A truck farmer friend reached out to me to have a look at her L1500, which was imported by her late bosses husband, from their farm, when they immigrated from Japan.

A few years ago she was tucking it away for the winter and added a fuel treatment product- she couldn't remember which one- but I'm guessing Sea Foam or something the like. Anyway, that summer she says there was a noticeable power reduction. It used to run a 4'(?) tiller and finish mower, and now bogs heavily under slight load. She replaced the fuel filter thinking it was comprimised, but there was no change to the power delivery.

The engine idles out nice and revs fine. There are no noticeable leaks other than some diesel slobber at the exhaust.

Any thoughts of where to begin would be appreciated. Thanks in advance