Timing chain replacement now not starting

Discussion in 'Mazdaspeed 6 Troubleshooting' started by chrisgrissle, Sep 5, 2020.

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  1. chrisgrissle

    chrisgrissle Greenie N00B Member

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    Just got done redoing the timing chain, got everything back together made sure the passenger ground and coil pack ground is secure.

    Primed the HPFP cranked lots of times with no turnover. Car cranks just fine just won't fire.

    I had tried to let it go a little longer then I should and got a p0091. I checked the fuel lines going to the HPFP to see if fuel was making it to the pump and surely there was fuel in the lines.

    I'm kinda lost at this point as I decided to do the VVT to save money. Double checked everything to make sure timing was correct etc. Just looking to see what I need to do next.

    Possibly replace or redo the HPFP? I'm getting no other codes besides the P0091. On the Accessport I get around 65ish pressure on HPFP that does not change when trying to start. Not sure if it's suppose to show HPFP Voltage. But I'm getting 0.0 from the Accessport.
     
    chrisgrissle, via a mobile device, Sep 5, 2020
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  2. Awafrican

    Awafrican Moderator Gold Member

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    Grounds: hpfp, on top of trans,two on front of trans, passenger motor mount and driver fender area.

    That being said 65 ish is just your in tank pump, makes me wonder of something is up on the timing chain, if you didn't touch the hpfp I highly doubt that's the issue.

    @JohnnyTightlips as you've actually times your own engine any insights for OP.
     
    Awafrican, via a mobile device, Sep 5, 2020
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  3. Cfoldone

    Cfoldone Gold Member

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    Only done once, but double checked was correctly done countless times...really I hate doing something twice especially with the use once bolts, washers. This is my short hand version. VVT replacement for me was a complete HPFP out, timing cover off, both cams out, replaced all the parts for the cam timing sub systems. Chains, guides, sprockets, AP cam bolts, Exhaust cam(another story) new bolts, new washers.
    Most important is timing verification. So following the many posts with crank lock bolt, Cyl #1 at TDC, cam lobes #1 facing right orientation, cam end plates holder (installs in cam end slots) lineup of everything to verify correct timing.
    The previous post on HPFP asks the question...did it come off? For a timing verification must be done..
    A quick and dirty way would be valve cover off cyl #1 tdc compression both Intake Exhaust cam lobes facing each other slightly verify Crank at Crank harmonic balancer aligns to holes. With crank tdc bolt and counterweight correct. Then see if Exhaust cam end slot aligns with gasket surface. Really close to a couple of degrees is not much at that point. If you can wedge the alignment tool to just check exhaust, a good check.
     
    Last edited: Sep 5, 2020
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