Question about 1985 Mazda RX-7

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85' RX-7 Wont Stay running

I have a 1985 rx-7 with the 12A and everyday when I go to start it, it wont start right away and I always have to pump the gas pedal for about 10-15 seconds until it will actually start to run, then I have to slam on the gas when I start driving to keep it running and right when I take off it will die when I give it gas until I can actually get moving. I have been told to try working the choke but it makes no difference at all. I think maybe it might be a bad fuel pump but I dont know.

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Have you checked the fuel filter for any dirt in it ??

Posted on Apr 12, 2009

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Posted on Jan 02, 2017

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85 HONDA ACCORD WONT STAY RUNNING UNLESS PUMPING GAS NOT EVEN FULL THROTLE


You have a single fuel injector in it right. Try right at the end of the gas pedal cable at the engine there is an electrical plug and a little device that goes around in a circle when the gas is mashed. That is the throttle position sensor. Try unplugging that and if there is no difference in the revving then the throttle position sensor is out. If that is not the problem, then plug your engine into a an onboard diagnostic reader. 85 is an obd1.

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My 1985 mazda rx 7 1.1 gets glowing hot where exhust comes out of the motor , replaced exhust pipe and muffler but didn't help have any suggestions


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Check the ignition timing.
Make sure the fuel you are using is specified for engine use.
Last one will be to check the catalytic converter if it still open.

Hope that helps!

Oct 22, 2011 | 1985 Mazda RX-7

1 Answer

I have a 1988 Mazda Rx-7 non-turbo and not all the time but every now and then when i go to start it it cranks but wont start. Is the engine flooding or is it something else?


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If I don't do that it cranks & cranks.....try it.

Mar 07, 2011 | 1988 Mazda RX-7

1 Answer

On my 1985 rx7 12a does both leading and trailing spark plugs fire all the time?


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Oct 08, 2010 | 1985 Mazda RX-7

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2004 mazda wont start, blew a front tire and had to be put on rollback. Sat all nite, and now wont start. will crank and can smell fuel.


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2 Answers

I have a 85 mazda rx7 1.1 it floods so bad that it leaks ( it pours ) trough the catalyst and the muffler


Hold the gas peddle to the floor when starting. The carb does not add fuel until the engine is running. Don't pump it as the accelerator pump will pump fuel each time you do it. Cause of problem is your float inside your carburetor is not seating correctly and "dribbles" fuel while your pump runs. Basically it is leaking inside and needs rebuilding..

Mar 18, 2009 | 1985 Mazda RX-7

1 Answer

Mazda 12a


Maybe fuel pressure is too high, did your put in a bigger pump to keep up with that big old bridge port? If so, it may need regulated! I have a holley FPR on my stock port set to 2.5psi it has really helped it run smoothly. Hope that helps!

Oct 18, 2008 | 1984 Mazda RX-7

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