S13 sr misfire come and goes

[onefst240]

So I was in the drive-thru and out of nowhere I started getting a misfire. Car started shaking and sounded like a subaru. So I headed home and a few blocks away from my house, it stopped misfiring. Well that's weird so I drove around for a few hours to see if the problem would come back. Car ran fine. So I'm out driving the next day and out of nowhere it started missing again. Pulled over and started unplugging coils. Found out it's the #3 cylinder. So I swapped out coils with a known good one and still misfires. Changing spark plugs made no difference. So far I've check for vacuum leaks, made sure no connectors were loose or unplugged, swapped coils and plugs. And I have a e5 ecu that doesn't have the screw so no way to check for codes. S13 blacktop sr20 with bolt ons Isis t25/t28 @9-10lbs Any ideas?


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[battery1882]

I would do a leak down test. Could be head gasket. hopefully it's something minor.

[cotbu]

Really its like you guys have no clue, and the internet is still some magical thing.
If you even search some of the terms(words) you used in your post, you would have come up with results(answers) that tell you what to check, test or even replace

But I digress! You didn't check the injectors, this could be the wiring or the injector itself.
And since you didn't test all of the components(parts) related to spark it could still be a spark issue as well. You didn't even mention if the plug was wet, dry or purple.

C'mon people its 2015, even if you were born 20 years ago!

[onefst240]

Thanks for your help bud. Have a great day


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