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Thread: Chevette blues
          
   
   

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  1. #1
    firebird77clone's Avatar
    firebird77clone is offline CHR Member Visit my Photo Gallery
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    Chevette blues

     



    ok so now I understand why everyone wants to put a 350 into a chevette. Because the stock fuel pump is HELL to service.

    So on my 78 'vette:

    I sold it for $100 plus yard care for two years, to my brother in law. I recently bought it back and it doesn't run.

    They had put a new carb on, but it still wouldn't run right.
    First thing I noticed wS the electric fuel pump, so I checked the specs, and its pressure is excessive for a sock carb.

    SO, o got a NOS pump and put it in.

    Some enginerd needs to be slowly cooked on a spit.

    To access the pump I pulled the power steering pump bracket and removed the oil filter. The top bolt is barely accessible with a stubby non-ratcheting wrench. Not enough clearance for a ratchet wrench. 1/8 turn at a time, luckily the bolts are short.

    So I put in my NOS pump, having verified the action and which port is intake.

    No fuel to carb. Multiple prime attempts, will start and run until the primer slosh runs out.

    So, I pull the pump, and decided I must have not assessed inlet correctly. Swapped the lines.

    No help. Still no fuel to carb.

    Absolutely confirmed fuel to pump.

    So now what?

    Old pump diaphragm was confirmed bad. I doubt the lobe is worn off the cam but it's possible.
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  2. #2
    34_40's Avatar
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    you answered your own question. Not sure if you can view it tho.???

  3. #3
    firebird77clone's Avatar
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    Ok since you put me on the spot:

    The NOS fuel pump is bad. Replace.

    The cam lobe is wiped. Rebuild motor and trans. Else upgrade

    Install electric pump with correct fuel pressure specs.
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  4. #4
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    I'll take box 3 for 100 Alex! just my opinion.
    TooMany2count likes this.

  5. #5
    firebird77clone's Avatar
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    I'm sorry your answer wasn't in the form of a question.

    A nod to Alex.

    I was just trolling ebay for parts.
    Not many and not cheap.
    Ok, utilitarian for now. Let's get a good quality gravity feed 3-5 psi electric pump. I'm thinking to use a relay switched by the ignition, to feed the pump straight off the battery with an inline fuse.

    So who had an ultra reliable low pressure favorite?
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  6. #6
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    Quote Originally Posted by firebird77clone View Post
    I'm sorry your answer wasn't in the form of a question.

    A nod to Alex.

    So who had an ultra reliable low pressure favorite?
    I was selecting the category... I want a refund! Sorry Alex..

    It seems right now the Mr. Gasket line is all the rage. I've installed 3 new ones for folks but I don't know where they got them from. I'm sure Summit or Jegs has'em.

    EBAY? I wouldn't buy a new copper penny for 1 cent from that place! just a bunch of chineseum junk imho! It used to be fun when the average joe was selling his cast offs.. but those days are gone.

  7. #7
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    OH! Camshaft Lobes?

  8. #8
    firebird77clone's Avatar
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    I checked summit, was thinking to go with an Edelbrock for $60.
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  9. #9
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    Summit had something for $41 I'll try to save a few greenbacks and see if the quality bites my posterior.
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  10. #10
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    Wow what a headache these are.

    BTW typo alert, it is an 87 shitvette.

    So, I figured this tiny little pump would fit easily?

    HAH!

    I ended up welding a mount tab to a crossbrace and the lines and wires are reasonably safe.

    I test wired it to the battery and the car ran, wouldn't idle. No surprise, as the previous owner tried to tune the carb with too high fuel pressure.

    So I figured next step was to check cap and rotor, timing, plugs.

    Holy cow. I had to remove the AC pump, then the cap wouldn't clear the AC bracket. Hey, I tried! So, to remove the AC bracket, you have to remove the power steering pump bracket! So, I get all that loose, and find the cap looks great! Good thing as it is probably obsolete.

    Now, does anyone remember where all the bolts go?

    But seriously, one bolt which didn't need to come out won't ho back.

    So I'm on break. It's hot out there. (GEORGIA)
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  11. #11
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    All back together. Man, it wasi so hot it felt like the engine had been running
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  12. #12
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    I can't find the compression specs on my Haynes manual.
    110 - 120 , I feel like those numbers are ok?
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  13. #13
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  14. #14
    firebird77clone's Avatar
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    Yes, it gives me access to these wonderful people on this site!

    Thank you
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  15. #15
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    Welcome. nine ten

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