cmosh07's 5858 Build

Discussion in 'Mazdaspeed 3 Build Diaries' started by cmosh07, Nov 11, 2016.

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  1. cmosh07

    cmosh07 Greenie Member

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    So took the car back to the dealer and they were no help whatsoever. They literally told me they don't know what the problem is. After a heated discussion with the two techs I eventually just left. I had a buddy of mine meet me on my way home so he could take a look at it. He unlplugged the harness for the fuse box under the hood, said there was a piece of plastic or something in there so he blew it out. Much to my surprise my AP immediately connected and the immobilizer light went away. Got the car home, had a few little leaks (oil cooler, fuel pressure sensor) fixed the leaks. Built oil pressure and what do you know, it fires right up! No leaks no weird noises purrs like a kitten! Now on to the break in!

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    cmosh07, via a mobile device, Apr 17, 2017
    #21
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  2. cmosh07

    cmosh07 Greenie Member

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    cmosh07, via a mobile device, Apr 17, 2017
    #22
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  3. cmosh07

    cmosh07 Greenie Member

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    Little update for those interested.
    I've gone through the break in period. Around 800 miles i started doing some wot logs for Justin Brasil. After a few pulls I started having issues with spark blowout so i bought a new set of 6510 plugs and gapped them to .024". Car ran fantastic for about 100 miles then started having issues again. I did a 3rd gear pull for Justin to see if he could tell what was going on. During the pull the car started cutting out again. But this time the fuel pressure dropped off to 505. I let out and took the car home. I noticed it was running a little rich on the drove home. I pulled into the drive and the CEL came on. "Fuel system too rich at idle" and "cyl 2 misfire". Ill attach a log of the pull for anyone curious. Now the car has trouble starting if i let it cool down. And afr's are around 11.8 ish at idle with hpfp pressure at 780 ish. Any ideas?? Stuck open number 2 injector? I've replaced the plug and stretched my coil springs already with no luck.
     

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  4. cshunter

    cshunter Greenie Member

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    Check connections along the harnesses in those areas.

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    cshunter, via a mobile device, May 20, 2017
    #24
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