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Thread: 1993 miata 1.8 swap from a 1994 need help

  1. #1
    3,000 rpm - starting to feel the power JLBMX5's Avatar
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    1993 miata 1.8 swap from a 1994 need help

    This weekend with the help of a couple of members on the forum we did a 1.8 swap on my 1993 Miata. If you look at Raleigh meet thread you can see the progress I had made with the swap.
    Now onto my issue. the motor is in everything is hooked up.when I turn the key the motor keeps revving no starting. I listened for the fuel pump and did not hear it. I did not mess with fuel pump and on Friday when I drove car home from work it was working fine. Just after the swap not working so if anyone has had the issue please let me know because after three days working on the car I'm sunburnt and its not even from top down driving .

  2. #2
    6,000 rpm - mere mortals would shift Demon I Am's Avatar
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    motor is turning over, not revving. If it was revving, we could fix that.
    Things checked, to my knowledge:
    Timing is correct.
    All wires, grounds connected.
    Sprayed starter fluid into the intake while cranking. It tried to fire but stopped, then the battery crapped out.
    Fuel lines are hooked up similar to my swapped 1.8. Rear hardline to front of fuel rail, front hardline to rear fuel rail.
    **I wonder if there might be some difference in th alignment of the hard lines**
    Last edited by Demon I Am; 09-02-2013 at 08:58 PM.

  3. #3
    3,000 rpm - starting to feel the power JLBMX5's Avatar
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    Tomorrow soon as I get home I'm gonna check for spark as well to see if getting that.I have jumper cables in truck so I can hook them to battery. I just need to get this figured out.

  4. #4
    5,000 rpm - there be torque here! psulja's Avatar
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    Have you made sure the fuel lines are set up right?

    Firing order of the plug wires good?

    Timing all good?
    Paul | IG- @psulja
    Build thread:
    1991 Mariner Blue - Built 1.8 swap, EFR, Fab9Tuning, Tii drivetrain

  5. #5
    5,000 rpm - there be torque here! psulja's Avatar
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    If you're having issues getting it to fire, while you're trying to figure things out keep the cables hooked up to another car so you don't keep killing your battery.
    Paul | IG- @psulja
    Build thread:
    1991 Mariner Blue - Built 1.8 swap, EFR, Fab9Tuning, Tii drivetrain

  6. #6
    3,000 rpm - starting to feel the power JLBMX5's Avatar
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    Quote Originally Posted by psulja View Post
    Have you made sure the fuel lines are set up right?:

    Firing order of the plug wires good?

    Timing all good?
    Tony(demoniam) had his Miata here that is also a 1.8 swap so we used it to check fuel and spark plug wires. As far as timing goes we made great effort in make sure timing lines were lined up.

  7. #7
    5,000 rpm - there be torque here! psulja's Avatar
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    Hmm, well those were the things that were wrong with my 1.8 swap when I first tried starting it. At least the 1st two. But when my firing order was messed up and we sprayed brake clean in the intake it started a fire, so I guess that wouldn't be it lol.
    Paul | IG- @psulja
    Build thread:
    1991 Mariner Blue - Built 1.8 swap, EFR, Fab9Tuning, Tii drivetrain

  8. #8
    3,000 rpm - starting to feel the power JLBMX5's Avatar
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    Quote Originally Posted by psulja View Post
    Hmm, well those were the things that were wrong with my 1.8 swap when I first tried starting it. At least the 1st two. But when my firing order was messed up and we sprayed brake clean in the intake it started a fire, so I guess that wouldn't be it lol.
    Any input is help full so that's why I posted because as it is I just look at my car scratch my head and say wtf so as it sits any pointers help.

  9. #9
    3,000 rpm - starting to feel the power JLBMX5's Avatar
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    I was thinking. the only ground I remember having on the whole motor is from chassis to the oil dipstick mount. could that be an issue. maybe I should ground where all the electrical connections for the fueling to the chassis as well ?

  10. #10
    3,000 rpm - starting to feel the power JLBMX5's Avatar
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    Called out of work today took vacation day so soon as I get light out and its not so hot I am going to cheek that ground as well as pull sparkplugs to check if they have spark so if anyone else thinks of something to try just post it and I will keep posting results.

  11. #11
    3,000 rpm - starting to feel the power JLBMX5's Avatar
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    Quote Originally Posted by Demon I Am View Post
    motor is turning over, not revving. If it was revving, we could fix that.
    Things checked, to my knowledge:
    Timing is correct.
    All wires, grounds connected.
    Sprayed starter fluid into the intake while cranking. It tried to fire but stopped, then the battery crapped out.
    Fuel lines are hooked up similar to my swapped 1.8. Rear hardline to front of fuel rail, front hardline to rear fuel rail.
    **I wonder if there might be some difference in th alignment of the hard lines**
    I can try swapping the two fuel lines and if it does not work I will swap them right back.

  12. #12
    3,000 rpm - starting to feel the power JLBMX5's Avatar
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    Switched fuel lines. No change. added ground from chassis to the passenger side of car no change. Soon as my brother gets out of bed I will have him help me with the sparkplugs

  13. #13
    3,000 rpm - starting to feel the power JLBMX5's Avatar
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    No spark either wtf

  14. #14
    6,000 rpm - mere mortals would shift Demon I Am's Avatar
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    Are you sure we have the right coil pack on there? We should, as I doubt the wiring connectors would be the same. I wonder if one of your butt connectors on the CAS wiring was not strong enough...

  15. #15
    3,000 rpm - starting to feel the power JLBMX5's Avatar
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    Tony I was thinking maybe that as well because we lifted the valve cover with coil attached might of pinched cars wires in the process but you put electrical tape all over them and I did not know if one of those wires came loose if it would create this problem

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