I have a 89 vw jetta 1.6L turbo diesel. This car has started fine everyday until today. I had to crank it over for around 20 seconds for it to finally sputter and then start. The car ran perfectly fine after that and would start up normally after that as long as it doesn't sit for over 4 hours.

See if these links help:

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

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-10.html#post1985158