When I start the engine it runs like it is missing half the cylinders and has no power at all
It will not go much over idle .

Good routine maintenance prevents most diesel-related problems. See if this link helps:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-8.html#post1415281