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RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections.

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Old 04-21-2009, 02:38 PM   #16
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I say it's a mouse that got sucked in.






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Old 04-21-2009, 02:55 PM   #17
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Afraid it sounds like a bearing, rear.
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Old 04-21-2009, 02:59 PM   #18
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My next question is, how the hell would a bearing fail with only about 16K on the engine? And the oil checked and changed religiously?

Also why am I getting great oil pressure? Wouldn't bearing failure read low pressure? Or no pressure?

That sucks, because if it is a bearing that is going to be alot more expensive to rebuild than I had planned.
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Old 04-21-2009, 06:40 PM   #19
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Bad install, bad bearing to start with. Blocked oil passage. Anything is possible.

Yes oil pressure should usually give you some indication.

If turbo isn't coming apart not much more that can cause that kind of noise. Fuel delivery or ignition issues usually don't sound like a bad rod. Could be quality of sound on vid but sure sounds like metal on my computer.

Air pumps can make really nasty noises especially when they shuck a seal. Parts get stuck in the ACV and cause rough running. Partially blocked exhaust will cause lack of top end power, but you would notice higher water temps when run for any length of time.

If you can get a hold of the old tape compression tester to use it gives you much better read out for diagnostic.
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Old 04-22-2009, 02:29 PM   #20
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Bad install, bad bearing to start with. Blocked oil passage. Anything is possible.
Don't think that is it. I stand behind the company that built my engine, and it has ran FLAWLESS until now.

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Yes oil pressure should usually give you some indication.
And my Oil Pressure is spot on.

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If turbo isn't coming apart not much more that can cause that kind of noise. Fuel delivery or ignition issues usually don't sound like a bad rod. Could be quality of sound on vid but sure sounds like metal on my computer.
I am thinking that clunking is something else, like something banging because the engine is shaking so much. It isn't that loud in person. I might need to look into some new motor mounts. LOL.

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Air pumps can make really nasty noises especially when they shuck a seal. Parts get stuck in the ACV and cause rough running. Partially blocked exhaust will cause lack of top end power, but you would notice higher water temps when run for any length of time.
No air pump, infact I have never had one on this car.

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If you can get a hold of the old tape compression tester to use it gives you much better read out for diagnostic.
When I bring it home, I will look into it more. Starting with replacing the coils, and checking the injectors harness, and the injectors themselves.

The only good thing is, if it is toast I will make it better next time.
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Old 04-23-2009, 11:28 AM   #21
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Check your PMs DJ.
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Old 04-23-2009, 09:28 PM   #22
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Check your electrical connectors on the injectors and make sure theyre not damaged, all of them get 12v with ignition on, and if you can see if the ecu is opening them when you try and start the car. As long as you are getting spark to both leading plugs i'd say it's fuel.
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Old 04-25-2009, 06:44 PM   #23
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I think I found out what the 'hammering' sound is. The AFM and air filter are not securely mounted anymore, and the end of the filter was knocking against the inner fender. When we I fired it up to move it onto the trailer, I held my hand on it and that sound went away.

Whew.
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Old 04-26-2009, 04:35 AM   #24
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Keep us posted, I hope nothing major is wrong.
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Old 05-07-2009, 10:01 PM   #25
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Since the AFM wasn't set securely, and was banging around like my ex, then would it not make sense to check/replace the AFM to ensure it's working properly?
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Old 09-27-2009, 09:02 AM   #26
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Finally got around to compression test yesterday.

All good on both rotors. Spark is good, so its time to pull manifold and check injectors.
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Old 09-27-2009, 12:47 PM   #27
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v8 time!
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Old 09-27-2009, 01:55 PM   #28
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hammer time?
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Old 09-27-2009, 02:48 PM   #29
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Quote:
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v8 time!
and your car looks in black.
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But I've learned that people that don't like guns, tend to like stretched tires.

Which makes perfect sense. They are sacrificing safety either way. lol


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Old 09-27-2009, 02:52 PM   #30
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Quote:
Originally Posted by Mobius View Post
Since the AFM wasn't set securely, and was banging around like my ex, then would it not make sense to check/replace the AFM to ensure it's working properly?
+1

used injectors? How many miles?
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But I've learned that people that don't like guns, tend to like stretched tires.

Which makes perfect sense. They are sacrificing safety either way. lol



Last edited by Phoenix7; 09-27-2009 at 02:54 PM..
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