Is this the sound of a broken/missing apex seal?
05-23-2015, 01:15 PM
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Is this the sound of a broken/missing apex seal?
I'll make this as short as possible, nobody wants to read too much:
-Drove in the rain, heard a pop and car died, I push-started while it was moving and came back on, but it was going bananas so I pulled to the side. ECU threw a P2070 Intake Manifold Tuning (IMT) Valve Stuck Open. Would crank but not turn over at all. Had to tow it home.
-Removed and cleaned SSV valve per Jon's video. That thing looked absolutely awful and it was getting stuck, it had been a while since I wanted to clean it but now I had a reason to.
-Had to deflood the engine after the install.
-Car turned on as usual after a deflood. I let it idle for about 5 minutes, everything seemed fine, idled okay, no weird noises, etc. Eventually it shut off. Figured it was normal.
-Turned it on again, wouldn't idle, had to keep giving it gas to stay alive. Car sounded weird, as if one rotor wasn't firing. Raspy and deep.
-Checked all plugs for ignition, all of them ignite.
That's when I heard something weird:
If I had the rear rotor plugs off, but the front in, the engine would sound a certain way when cranking. When I took the front rotor plugs off, and put the rear plugs in, it sounds completely different. Car won't turn on at all anymore.
I recorded the sounds:
Does it sound like the front rotor could be missing an apex seal or is that a normal sound?
-Drove in the rain, heard a pop and car died, I push-started while it was moving and came back on, but it was going bananas so I pulled to the side. ECU threw a P2070 Intake Manifold Tuning (IMT) Valve Stuck Open. Would crank but not turn over at all. Had to tow it home.
-Removed and cleaned SSV valve per Jon's video. That thing looked absolutely awful and it was getting stuck, it had been a while since I wanted to clean it but now I had a reason to.
-Had to deflood the engine after the install.
-Car turned on as usual after a deflood. I let it idle for about 5 minutes, everything seemed fine, idled okay, no weird noises, etc. Eventually it shut off. Figured it was normal.
-Turned it on again, wouldn't idle, had to keep giving it gas to stay alive. Car sounded weird, as if one rotor wasn't firing. Raspy and deep.
-Checked all plugs for ignition, all of them ignite.
That's when I heard something weird:
If I had the rear rotor plugs off, but the front in, the engine would sound a certain way when cranking. When I took the front rotor plugs off, and put the rear plugs in, it sounds completely different. Car won't turn on at all anymore.
I recorded the sounds:
Does it sound like the front rotor could be missing an apex seal or is that a normal sound?
05-27-2015, 10:47 AM
#4
You want to hear/feel the "puffs" coming out of the spark plug holes.
I would agree with wcs and say the rear rotor sounds like it doesn't have compression (as long as the rear/front labeled caption in the video is correct).
If you don't feel the puff of air coming from the spark plug holes, then you lost compression in that chamber.
I would agree with wcs and say the rear rotor sounds like it doesn't have compression (as long as the rear/front labeled caption in the video is correct).
If you don't feel the puff of air coming from the spark plug holes, then you lost compression in that chamber.
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