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Thread: Valve adjustment info found under hood (Periodic valve adjustement required?)

  1. #71
    Senior Member HitShane's Avatar
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    Quote Originally Posted by Justamirage View Post
    Are you sure that site is ok? It seemed to try and eat my computer alive when I went there.
    I never have issues either but I also have uBlock origin and ad blocker plus installed in chrome.



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    Senior Member DonkeyPal's Avatar
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    The maintenance schedule for the 2015 Mirage has a very few Xes in a row next to the words "Inspect and adjust valve clearance" and "3A9" engine, but-But-BUT there is a footnote designated by " *2 " ! And when you look at the end of the schedule for the footnote *2, you find it says this:

    *2: Check valve clearance in case abnormal noise from valves is heard.

    The maintenance guide has a Schedule 1 ( for vehicles used in more challenging conditions) and a Schedule 2 (for more gently used vehicles); on both schedules, the check valve clearance contingency is indicated by Xes for 60,000 miles and 120,000 miles. So it sounds like you are supposed to listen for abnormal valve noise, once every 60,000 miles, and, if you hear it then, have the dealer do whatever it is they do to adjust the valve clearances.

    Presumably, were the valves making an abnormal noise at any other time, the dealer (or any other mechanic) would be only too happy to inform a Mirage owner that the valve clearances needed to be checked and possibly adjusted for a lusciously high price.

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        click to view fuel log View my fuel log 2015 Mirage DE 1.2 automatic: 43.0 mpg (US) ... 18.3 km/L ... 5.5 L/100 km ... 51.7 mpg (Imp)


  4. #73
    Moderator inuvik's Avatar
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    I could be mistaken but I don't know of anyone here on the forum that has had to adjust their valves ever. I'm sure we'll find out if anyone has.

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        click to view fuel log View my fuel log 2015 Mirage ES 1.2 automatic: 40.4 mpg (US) ... 17.2 km/L ... 5.8 L/100 km ... 48.5 mpg (Imp)


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    Senior Member Cobrajet's Avatar
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    Quote Originally Posted by inuvik View Post
    I could be mistaken but I don't know of anyone here on the forum that has had to adjust their valves ever. I'm sure we'll find out if anyone has.
    As others have stated earlier in this thread, the valves on the 3A92 require no routine maintenance. They are the solid-lifter type, but there are no provisions for adjustment other than pulling the cams and replacing the tappets with ones of a different thickness. There are no shims, no locknut adjusters, etc.

    This is only required if abnormal valve train noise is heard.

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  8. #75
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    I've owned several older hondas with a ton of miles, and even the 20+ year old engines in them rarely needed much if any adjustment at the 250000+ miles I had on them when I checked valve clearance on them(these were d-series motors with valve adjusters). With the advancements in oil, metallurgy, and engine design, with regular oil changes I suspect you would be at 350k miles or more before you needed to worry about valve clearance in one of these engines.

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    johane (08-31-2020)

  10. #76
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    Major Engine failure!

    I had a major engine failure at 72.5K miles. The compression was 180,0,10. I nursed it from 100 miles South of Tulsa, OK to Luck, WI. About 1.5K miles. The replacement engine has taken 30K miles to break in. The compression as of today at 37K miles is 200, 195, 190. The clutch disc was put in backwards by the tech who did the engine. The trans has gone bad. It is almost impossible to shift when the outside temperature is below 30F. It also grinds from 2 to 3 and 4 to 3 when cold. All of the gears are very notchy. At 110K miles the trans never did break in. My Mazda Trans were always broken in at 30K miles. My 323 trans had 323K miles on it and shifted like new. The Protege trans had 147K miles on it and was still shifting like new.
    GOD Bless and Thanks,
    rich!
    BTW: Do you check the valves at 30K miles and is the clearence supposed to be .010 to .020 inches??
    rich!

    Out of the 183 active members there have only a few mechanical issues. The one thing that no member has reported is a major engine failure. The 3A92
    is an excellent motor. There have been a few problems with manual transmissions being notchy to shift and there have been a few clutches that have needed replacement. The CVT's seem to be very reliable with some members reporting some harsh initial takeoff issues but those are few and far between. Yes the 2014's and some 2015's had rear axle alignment issues. Yes the 2014 & 2015 have under sized brakes but I have a 2015 and have no complaints. The Mirage is a simple frugal car. Doesn't handle great but is very efficient and inexpensive to operate. Exactly the kind of car I wanted.[/QUOTE]
    2019 G4 Wine colored. 'Burgundy'
    40K miles, 40MPG average at 75-80 MPH with A/C and Lights
    I am happy!

  11. #77
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    No, NO, NO! When all of the lash is used up the valves won't close and the engine won't start due to a lack of compression.
    rich!


    2019 G4 Wine colored. 'Burgundy'
    40K miles, 40MPG average at 75-80 MPH with A/C and Lights
    I am happy!

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