Is this what a blown apex seal sounds like (video)
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Joined: Nov 2004
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From: CA
Is this what a blown apex seal sounds like (video)
my car has a horrible idle, i have to keep it above 1200rpm at a stoplight or else the car starts shaking pretty bad. is this a sign of a bad apex seal?Had it compression checked not too long ago and it was somewhere around 92 psi on both rotors. i think you have to check to see if there are three jumps or something but i forgot about that and just checked for max psi. It also makes a very noticeable noise shown in the video. I don't see any smoke when i startup and it doesn't overheat or give me low coolant warnings. also starts up pretty quick but it seems gutless before 2000rpms. this happened after a 100mile round trip, i was pretty hard on the car getting it to boost but it was perfect before i took that trip. now my idle is pretty bad.
you need to copy the link and paste it in your browser. (3mb file)
http://www.imagestation.com/video/vi...131793301&dl=1
you need to copy the link and paste it in your browser. (3mb file)
http://www.imagestation.com/video/vi...131793301&dl=1
Last edited by blownapexseal7; Nov 13, 2004 at 10:51 PM.
Joined: Oct 2003
Posts: 11,576
Likes: 27
From: Morristown, TN (east of Knoxville)
You cant tell much of anything by that..you should be revving the engine up and such. Still, a compression check is the real way to tell. FWIW< most blown rotaries turn over with a slower, rhythmic pulsating sound, like a horse gallop, and start up similar to an old lawnmower.
Joined: Sep 2004
Posts: 3,258
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From: South Florida
had the same symptoms...but in addition my start up was slower...like rotaryresurrection suggested. turned out to be a craked apex seal 
. check all the simple things first..hoses, fuel, ignition, ect..ect.. and good luck
. check all the simple things first..hoses, fuel, ignition, ect..ect.. and good luck
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Constant threat
Joined: Jul 2001
Posts: 4,968
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From: near Wichita, Kansas
Uh.....maybe.
When mine blew I couldn't get the engine to idle at all, I had to keep it revved to 3K or higher and it sounded like ****....and then it started making a REALLY LOUD banging noise, and then....BAM!.....it just stopped.....
When mine blew I couldn't get the engine to idle at all, I had to keep it revved to 3K or higher and it sounded like ****....and then it started making a REALLY LOUD banging noise, and then....BAM!.....it just stopped.....
Ee / Cpe
Joined: Jan 2003
Posts: 2,843
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From: Gaithersburg, MD / WVU
i dont know about yours, but this is def what a blown apex sounds like 
https://www.rx7club.com/showthread.p...ht=compression
https://www.rx7club.com/showthread.p...ht=compression
2/4 wheel cornering fiend
Joined: Nov 2002
Posts: 3,090
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From: Pasadena, CA
Originally Posted by XSTransAm
i dont know about yours, but this is def what a blown apex sounds like
https://www.rx7club.com/showthread.p...ht=compression
https://www.rx7club.com/showthread.p...ht=compression
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Joined: Nov 2004
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From: CA
Originally Posted by RotaryResurrection
You cant tell much of anything by that..you should be revving the engine up and such. Still, a compression check is the real way to tell. FWIW< most blown rotaries turn over with a slower, rhythmic pulsating sound, like a horse gallop, and start up similar to an old lawnmower.
http://www.imagestation.com/video/vi...131573178&dl=1
http://www.imagestation.com/video/vi...131572763&dl=1
Last edited by blownapexseal7; Nov 15, 2004 at 12:50 AM.
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