1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Alright, need the RX7 gurus to diagnose a problem...

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Old Jun 26, 2004 | 12:35 PM
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Alright, need the RX7 gurus to diagnose a problem...

Ok, heres the scoop. last night i was driving and my alternator and water pump pulleys came off. I put em back on, let it cool off and resumed driving. the alternator pulley then broke. the car backfired a few times,and then died. I had it towed home and ive changed the belts now, but when i rev it up a little, it makes a very strange noise. it almost sounds like gurgling or something. does anyone know what this is? its coming from the pasenger side. i dont know what to make of it, but im afraid to drive it. I really hope its nothing big. ive got no money to fix it right now...
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Old Jun 26, 2004 | 12:50 PM
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How hot did the engine get, you coulda warped something like your intake or exhaust manifold
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Old Jun 26, 2004 | 12:51 PM
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makes the weird noise from 2000 rmps up. i wonder if maybe its flooding or something. any ideas?
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Old Jun 26, 2004 | 12:55 PM
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Could still be warped rotor, at low rpm the air may not be escaping, but once the rpms get higher so does the pressure and it could escape. Just a though thou. U check for any fluid leaks or have a friend rev if for u?
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Old Jun 26, 2004 | 01:11 PM
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hottest it got was 100 degrees. ive checked for leaks and cant find and except for a small leak in the rad hose where it meets the rad. ive been fighting this since i put in the temp control for my efan. when i popped the hood last night there was some antifreze on the intake. im not sure what to make of it. its fixed now, just had to fuss with the butal tape a little.

Last edited by Sk8r_dude; Jun 26, 2004 at 01:23 PM.
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Old Jun 26, 2004 | 01:14 PM
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ive been listening a little closer and i think it may be coming from under the dynamic effect chanber, or from the front rotor. im not liking this.
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Old Jun 26, 2004 | 01:22 PM
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I really hope it isn't a warped anything. i cant afford to fix it
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Old Jun 26, 2004 | 01:22 PM
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probably warped something. not good my friend. been there done that. my belt shredded off once and it started to overheat as i was driving so i quickly turned off the car and coasted as far as i could. just to find out that internaly i sprung a coolant leak. so i just got a second engine.
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Old Jun 26, 2004 | 01:24 PM
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thats what im worried about, i cant afford an engine right now
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Old Jun 26, 2004 | 01:24 PM
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if the engines gone, ive no doubt that ill be leaving the rx7 world...
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Old Jun 26, 2004 | 01:59 PM
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is htis a 12a or 13b, 12a's are cheap. I bought one with <60k miles on it for 300 american
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Old Jun 26, 2004 | 02:00 PM
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its a 13B and i dont have 300 american. ive got like 100 canadian. im screwed.
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Old Jun 26, 2004 | 02:01 PM
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im taking it that i shouldnt be driving it either eh?
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Old Jun 26, 2004 | 03:02 PM
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ive been listening to it a little bit more and it sounds hollow, almost like something rolling around. im afraid it might be the rotor.
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Old Jun 26, 2004 | 04:01 PM
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What shape is the water pump in? If it's toast you'll likely see some coolant seeping from the "weep hole," located at the bottom of the pump.

If it is seizing at certain rpms it will wreck the belt and cause overheating.

remove the belt from the water pump pulley and then spin the pump by hand. If operation is less than smooth, or if coolant is leaking from it even a little, you've probably found your problem.

You'll need to remove the four or five bolts holding the pump on, being careful to remember which bolts had shims under them, their exact location and length, and to not mix them up.

BTW, DO NOT remove the entire pump body (the part that includes the coolant hose connections). Only remove the pump itself. Once the bolts are removed it should come off quite easily since the only thing holding it will be the gasket, which must be replaced anyway.

The gasket is available from Mazda, as is the replacement pump. But if you can find a good used pump somewhere you'll probably save a few bucks because Mazda is notorious for their over-priced parts.

The whole re and re is doable in 1/2 an hour.
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