1983 rx7 won't rev past 4500-5000 rpms

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Aug 23, 2016 | 01:58 PM

Taylorcross

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From: Kernville

1983 rx7 won't rev past 4500-5000 rpms

My 1983 Mazda rx7 won't rev past 4500-5000 rpms in gear or in neutral. Also doesn't have much power threw gears and can only accelerate to about 50 mph. Any ideas of what's wrong or how to diagnose?

Aug 23, 2016 | 02:01 PM

FührerTüner

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From: █▬█ █▄█ █▬█ █▄██▬█ █▄█ █▬█ █▄█

Check timing? Do you have vacuum lines going to your distributer?

Last edited by FührerTüner; Aug 23, 2016 at 02:03 PM.

Aug 24, 2016 | 06:43 AM

misterstyx69

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From: Smiths Falls.(near Ottawa!.Mapquest IT!)

Clogged catalytic converter.

Aug 24, 2016 | 02:32 PM

lduley

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From: Freeland, MI

Dirty carb, seized secondary's, bad accelerator pump, timing off, vacuum advance not working, dirty plugs, bad fuel filter.......

Need we go on?

Sep 2, 2016 | 06:32 PM

misterstyx69

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Try changing the plugs.
I just got an 82 and it was gutless.
I changed the plugs and the difference was night and day.

Jan 12, 2017 | 08:49 PM

kisuniku

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From: Denver

Quote:

Originally Posted by Taylorcross

My 1983 Mazda rx7 won't rev past 4500-5000 rpms in gear or in neutral. Also doesn't have much power threw gears and can only accelerate to about 50 mph. Any ideas of what's wrong or how to diagnose?

Did you resolve this issue? I am having a similar issue with mine. Suggestions have been timing and clogged cat.