1984 Toyota Diesel Hard to Start

1984 TOYOTA
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HAPPYSIDD
  • MEMBER
  • 2 POSTS
lately my toyota has been harder and harder to start i was able to use the primer on the fuel filter to get it started but lately when using it it feels as if its not working and just pushing air at some point it seems to build suction when it does this i am able to start i disconnected the fuel line form the filter with the key in the ignitionand turned on but no fuel comes out i am unsure if there is anything else needed to allow pump to work also will any fuel pump work or does it have to be a diesel pump i believe this is a intank pump is there anything else to check for as far as fuel not pumping ? thank you for any assistance anyone can offer
Apr 17, 2006 at 4:06 PM
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LOSONE
  • ✓Experienced Mechanic
  • 1,616 POSTS
Nope you need the exact fuel pump replacement. There are two pumps on mopst models, one to bring fuel from the tank and the other high pressure pump to provide high pressure fuel to the injectors. Good luck.
Apr 18, 2006 at 10:48 AM
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HAPPYSIDD
  • MEMBER
  • 2 POSTS
should fuel exit the fuel line feeding the filter when key is in ignition and on or is there a supply and demand type switch somewhere
Apr 18, 2006 at 2:59 PM
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Suggested Repair

Replace the fuel pump with the exact specified unit. These diesels typically have a tank supply pump and a separate high-pressure injection pump, so a generic pump should not be substituted.

Conversation Summary

The owner of a 1984 Toyota diesel reports increasingly hard starting. Priming the fuel filter used to help, but it now seems to push air until suction builds, and no fuel comes from the filter supply line with the key on. The expert says the exact replacement pump is required and notes that most models have one pump to draw fuel from the tank and another high-pressure pump for the injectors. A follow-up about key-on fuel flow was not answered.

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