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help - fuel pump not working after head swap - 87 integra

Discussion in 'General Tech and Maintenance' started by afrookie, Mar 12, 2006.

  1. afrookie

    afrookie Junior Member

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    hey guys
    i bought an 87 integra last week and did a head swap. "finished" it up yesterday, when i went to crank it it fires over just fine. the problem is that there the fuel pump isn't working. i loosened the bolt on top of the fuel pressure regulator while my wife turned the key on and off over 30 times - nothing. i even removed the bolt and put my finger over the bolt hole when she did that - nothing.
    then i put my head near the fuel pump - nothing.

    i've got to believe that the head swap and the fuel pump not working is somehow connected, as it worked before.

    thanks
     
  2. jlicrx

    jlicrx Senior Member

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    check your ground that bolts to the thermostat housing - check all your connectors
     
  3. afrookie

    afrookie Junior Member

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    what would that do?
     
  4. VTECin5th

    VTECin5th Administrator

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    It will stop the fuel pump from working... did the same thing in my mom's prelude...forgot to hook it up when i put the new thermostat+housing in it, and it wouldn't start.
     
  5. afrookie

    afrookie Junior Member

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    AH HA! look at that. i missed that ground. the fuel pump works now. however (I haven't yet set the timing), when i turn the car on the RPM's go WAY up, even if my foot's not on the pedal. thanks VTECin5th, man i owe you. i spent 3 hours trying to figure that out last night, and 5 minutes fixing it today.


    and there's a loud knock in the engine that was there before i did the head gasket. piston slap maybe?

    any idea why the RPM's go up? what can i do about the knock?
     
  6. lil_red_si

    lil_red_si Senior Member

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    prolly rod knock if you ask me.....bad.......if you dont take care of that rod knock...you might shoot a rod thru that pan.....then bye bye motor....shootin a rod can crack the block and make a big hole in the pan.....just my 2 cents
    :ph34r:
     
  7. afrookie

    afrookie Junior Member

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    is that an easy fix? aside from pulling the motor and rebuilding it or putting a different engine in?

    how do i tell for sure if it's a rod knock?
     
  8. VTECin5th

    VTECin5th Administrator

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    To me it sounds like you lined up the timing belt wrong, and you're hearing your valves smash into the pistons, and are most likely bent.
    (the rpms might be up partly due to incorrect timing or maybe your throttle cable is pulling it open?)
    Thanks for the appreciation, but it was jlicrx who suggested checking that first.
    Do you have any check engine lights on?
     
  9. afrookie

    afrookie Junior Member

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    thanks for the help guys. i appreciate it
    man i hope i didn't bash the valves
    it actually starts, but yea the rpm's go way up - symptoms of bent valves?
    i made sure i line the cams up with the holes on the drivers side, how could the timing be jacked up?

    how do i check to see if my valves are hosed? man, that makes sense, but i sure hope it's not it

    i made sure my throttle cable was even loose, so unless the TB is stuck open, i don't see why the RPM's would go up

    not sure about a check engine light, my wife was turning the key and i was under the hood, but didn't pay attention to the gauges

    i took the head into a head specialist. he did a pressure test and said it was pretty good (some small leaking but otherwise fine). this noise sounds like the same noise i heard before i pulled the head and replaced the gasket
     
  10. VTECin5th

    VTECin5th Administrator

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    I didn't know the problem existed before you did the head swap...
    In that case, if you did take it to be checked, i'm sure they would've told you if you had bent valves...or if you disassembled the head yourself you would've noticed, i hope.
    It does sound like rod knock.. can i ask why you went thru the trouble of headswap when a d16a1 can be found for cheap/free? Just wondering?
    Drain your oil and look for metal shavings in it...if you find some, buy a new motor.
    RPMs going way up is usually NEVER a symptom of bent valves, but more likely a vacuum hose not hooked up/broken or a broken sensor.
    My guess is Vacuum though (like you maybe broke one of the hoses, or forgot to hook it back up, or hooked it up to the wrong place etc)
     
  11. afrookie

    afrookie Junior Member

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    yea, it's rod knock. i had a mechanic listen to it today.

    i found another d16 for about $340 shipped to me. i can't find one at a salvage yard any cheaper. anyone have one for sale on here?

    i did just the head swap because i couldn't find another engine out here cheap until just today (i started looking harder when i found out the motor was shot). basically i didn't want to go all the way with a new engine
     
  12. VTECin5th

    VTECin5th Administrator

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    Understandable, and most likely you are doing the right thing.
    $340 shipped seems high to me, but it's not too bad if you can't get it locally.
    Where are you that you can't find an 87 integra in the junkyard?
     
  13. afrookie

    afrookie Junior Member

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    how much should i pay for a motor in good shape?
    the one for $340 has 78k on it

    if i call a junkyard and ask for a motor from an 87 integra are they going to know if the same motor came out of any hondas? was a d16a1 ever put in anything else?

    what's the difference between a ZC and a D16a1?
     
  14. VTECin5th

    VTECin5th Administrator

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    A d16a1 bolts directly into your integra, and i think the brown top ZC does as well...don't quote me.
    78k seems unreal for an 87-88 but it happens.
    $340 is a decent price if they're reputable,(78k true) and shipped to your door, but i would check around...maybe save some more locally.
    As far as i know the d16a1 came in only one car.(the teg)..again don't quote me.
     
  15. afrookie

    afrookie Junior Member

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    sow hen i replace the motor i want to also replace the following
    cam shaft seals
    crank seal
    rear main seal
    water pump
    timing belt

    anything else?
     
  16. jlicrx

    jlicrx Senior Member

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    timing belt tensioner, oil pan gasket, valve cover gasket and spark plug seals, thermostat - D16A1 only came in 86-89 Integra, but 86-87 are different from 88-89
     
  17. afrookie

    afrookie Junior Member

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    timing belt tensioner is manual isn't it? i thought those type didn't need replacing
    is it worth doing the oil pan gasket if it's not leaking?
     
  18. afrookie

    afrookie Junior Member

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    I've got the capability to lift the car and take the motor out of the bottom. Would that make it much easier?

    it's an 87 integra with the stock motor
     
  19. VTECin5th

    VTECin5th Administrator

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    I don't know about much easier?
    We tried to drop one from the bottom i didn't like it, i prefer to pull em out from above so you can see what is getting snagged.
     
  20. lil_red_si

    lil_red_si Senior Member

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    :mrgreen: so i was right it was a rod knock!!!!!!!!!...kudos for me
     
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