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Need some help. need to make a new fuel system for my truck

Discussion in 'The Garage' started by 84CUCV, Apr 20, 2007.

  1. 84CUCV

    84CUCV 3/4 ton status Premium Member

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    Its a 87 TBI shortbed truck that had duel tanks. Wireing is messed up and its being a real pia. so i was going to use a tank from a M1009 i have. (if i can use it) i dont see why not. I was going to run all new lines and a electric fuel pump for FI. i think i need about 9 to 14psi for tbi. not sure where to start

    as always thanks for the help
     
  2. dyeager535

    dyeager535 1 ton status Premium Member

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    Fixing the existing wiring is going to be a lot cheaper/easier than retrofitting a K5 tank. That is of course, if the dual tank lines are ok and the tank switching solenoid is intact.
     
  3. 84CUCV

    84CUCV 3/4 ton status Premium Member

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    tank lines are not ok, and the switching valve is not working at all. so i was going to make one
     
  4. Cricket

    Cricket 3/4 ton status

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    If you go with a K5 tank then buy a new baffled unit unless your used one came off a TBI system.

    As far as new line I used stainless brake line, a small bender, and flaring tool. You can make your own custom lengths to fit. Works great and is readily available at any parts store.
     
  5. 84CUCV

    84CUCV 3/4 ton status Premium Member

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    was going to use a tank from a m1009. So i cant use it because there is no baffle? as far as line i was going to use line from jegs.
     
  6. Cricket

    Cricket 3/4 ton status

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    You can use a non baffled tank but the TBI systems run a baffle to prevent fuel starvation / sloshing and damage to the in tank pump.

    If you end up using the M1009 tank make sure the return line is at least 1/4 going into the pick-up. Otherwise route the return line to your filler neck. Keep the tank no lower than 1/4 full at all times.
     
  7. 84CUCV

    84CUCV 3/4 ton status Premium Member

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    think i am going to got for a new tbi k5 tank. any advice on fuel pumps?
     
  8. dyeager535

    dyeager535 1 ton status Premium Member

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    AC Delco
     
  9. 84CUCV

    84CUCV 3/4 ton status Premium Member

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    thay have inline fuel pump? know a part #?
     
  10. dyeager535

    dyeager535 1 ton status Premium Member

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    I missed the inline part. I like the in-tank pumps better, but that's my opinion. :)
     
  11. Cricket

    Cricket 3/4 ton status

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    Check out www.rockauto.com

    They have the best deals on tanks and also carry AC Delco pumps. There is a search feature going by year and make which does the work for you.

    If you don't want to buy there you can still pull up part numbers.
     
  12. 84CUCV

    84CUCV 3/4 ton status Premium Member

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    OK thanks guys. why do you like in tank? i was thinking a inline fuel pump would be simpler to work on and i would not need to drop the tank.
     
  13. dyeager535

    dyeager535 1 ton status Premium Member

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    Failure IMO is a ridiculous reason not to use a tank pump...GM pumps usually last 100K+, that's a long time.

    I've heard of one instance that caused a dangerous condition, but that's it.
     
  14. twoslo4five0

    twoslo4five0 3/4 ton status Premium Member GMOTM Winner

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    i swear by holley inlines..my girlfriend tahoe went throgh 3 from napa before we got one that lasted...has happened to a buddies of mines tahoe also...plus a intank is big $$$$..just my .02
     
  15. dyeager535

    dyeager535 1 ton status Premium Member

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    I think my ebay in-tank AC Delco was $20, but the sending unit WILL add some cost, depending on where you get it.
     
  16. 84CUCV

    84CUCV 3/4 ton status Premium Member

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    OK thanks guys
     

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