Toyota 8FD45U:
Hard starting

I have the said model unit it is very hard to start I am getting fuel to the rail and injectors but it doesn't seem to have much pressure to it I can however shoot a little bit of starting fluid to it and it will start and stay running. Any ideas.
  • Posted 15 Mar 2019 02:43
  • Discussion started by Paps
  • Texas, United States
Showing items 1 - 6 of 6 results.
Ok that is a good start. That would be a issue no doubt. it could be sucking air if its bad or if its equipped with a check valve it could be bad maybe. thank you for getting back with me. we will look into this. have a great day.
  • Posted 15 Apr 2020 23:41
  • Reply by keith_m
  • Texas, United States
Yes I did it was in the primer pump behind the batteries
We replaced it and put a new filter on it bled out the system. Truck is running great now with no start issues.
Found out that this is a common problem with these trucks.
  • Posted 15 Apr 2020 23:34
  • Reply by Paps
  • Texas, United States
Did you get to the bottom of why this unit is hard to start. we have one that seems to have the same problem Tier 4 engine. Extremely hard to start , but when it does it runs absolutely fine. once you shut the engine off and let sit even for 10 seconds its back to a very long hard start. its acting like a check valve of some sort is not holding back pressure on the system. I'm trying to get some service info on this unit.
  • Posted 15 Apr 2020 23:21
  • Reply by keith_m
  • Texas, United States
It sounds like the fuel is leaking off. I would start by checking the fuel lift pump. Not sure what it looks like on your truck. There is normally a check valve in the lift pump or in the hand pump if it has one.
  • Posted 16 Mar 2019 04:53
  • Reply by BREWSKI
  • Nebraska, United States
Sorry this is a diesel unit not LP
  • Posted 16 Mar 2019 00:36
  • Reply by Paps
  • Texas, United States
Sounds like there is tar build up in system. May need to drain regulator and clean injectors.
  • Posted 15 Mar 2019 23:34
  • Reply by BREWSKI
  • Nebraska, United States

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