2013 VT, misfires and 560-580 psi rail pressure at idle - Page 3

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2013 VT, misfires and 560-580 psi rail pressure at idle

This is a discussion on 2013 VT, misfires and 560-580 psi rail pressure at idle within the Veloster Turbo Discussions forums, part of the Veloster Turbo Forum category; I really appreciate everyone's input. I used to be a moderator on another car forum for GM cars, and I know it always made me ...

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Thread: 2013 VT, misfires and 560-580 psi rail pressure at idle

  1. #21
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    Richtazz's Avatar
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    I really appreciate everyone's input. I used to be a moderator on another car forum for GM cars, and I know it always made me feel good when I could help someone. I will be doing the fuel line replacement this weekend, and have ordered the coils (may get here Saturday for installation this weekend as well). I will boroscope the cylinders, do a compression check and post all results here.

    In case anyone thought I was searching for a "cure in a can" or something, that is not the case. I tried to present my issues as clearly and detailed as possible, as I know that is the best way to get the right advice. Just didn't want to throw money away on things not needed. You guys are the experts on this model, I am but a humble noob.

    Thanks again everyone!
    Rich
    Last edited by Richtazz; 03-27-2019 at 05:42 AM.

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    No problem, everyone was new once.

    If you have a multimeter, check the electrical resistance of the main grounding points (both strut towers to start) and report back with this info, please. Pics are best to confirm ohm values.

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    Quote Originally Posted by E9C900A View Post
    No problem, everyone was new once.

    If you have a multimeter, check the electrical resistance of the main grounding points (both strut towers to start) and report back with this info, please. Pics are best to confirm ohm values.
    I read where Hyundai attached the grounds to the body without scraping paint. I took both strut tower grounds off, and scuffed the paint to bare metal and reattached. Should I also do the one I can see by the overflow reservoir with the odd looking multi-wired connectors attached?

    Do you want me to detach the grounds and read the resistance between them and where they mount to the body, or am I testing something else?
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    2013 VT, misfires and 560-580 psi rail pressure at idle

    Exactly. If you have a bit of exposed metal at each grounding point you cleaned up, check resistance against the negative terminal (with wires still connected). Sure, you can clean the one under the coolant reservoir and also the transmission connection at the frame (under airbox) also.
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    Quote Originally Posted by Richtazz View Post
    I read where Hyundai attached the grounds to the body without scraping paint.
    Hmmm..this is new info for me. I gotta look at my car also.

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    okay, here are the photos you requested E9C900A.

    Name:  batt to dr-side strut tower.jpg
Views: 71
Size:  1.32 MB battery to d-side strut tower
    Name:  batt to pa-side strut tower.jpg
Views: 74
Size:  1.32 MB battery to p-side strut tower
    Name:  cyl-1 coil.jpg
Views: 71
Size:  1.55 MB Cyl 1 coil
    Name:  cyl-2 coil.jpg
Views: 70
Size:  1.28 MB Cyl 2 coil
    Name:  cyl-3 coil.jpg
Views: 74
Size:  944.3 KB Cyl 3 coil
    Name:  cyl-4 coil.jpg
Views: 75
Size:  931.0 KB Cyl 4 coil
    Name:  Meter baseline.jpg
Views: 72
Size:  1.57 MB Meter baseline (touching 2 leads together)

    Also, is the OBDlink MX worth the extra cost for these cars over the OBDLink LX? I have a portable scan tool that can run live data but the record/playback function is trash, I think I would like the ability to log things as I have read these can do.
    Last edited by Richtazz; 03-28-2019 at 06:17 PM.
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    Not unless you plan on using CAN functionality with GM or Ford vehicles.

    Nice work on the grounding point cleanup.

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    The coil measurements are across the two terminals where the harness plugs in (primary side) just for clarification

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    2013 VT, misfires and 560-580 psi rail pressure at idle

    Not sure if your multimeter is rounding up, but the maximum value is .9085 ohms as per the service manual:


    However, as we all (should) know, resistance values rise as air and material temperatures rise. Spec value is at 68°F.

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