2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Fuel Leak problem

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Old Sep 17, 2014 | 08:54 PM
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From: Moreno valley Ca
Question Fuel Leak problem

Drove my car Sunday. no problem no leak no nothing...

I drive it Weds (today) it leaks like a faucet right into the center of the ground. It cannot be the Pulsation Damper cause it was replaced in 2005 (non daily driver).


I "tapped" the fuel line for my Defi Pressure gauge a few years back at a performance shop but had it removed because i wasen't comfortable with it because of engine fires.

and New Injectors back in 2009 (no problems before)

what are my options?

Remove the Rats nest and see it its coming from there?

Check where the the fuel lines that were "tapped" years ago?

your input guys. thx
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Old Sep 17, 2014 | 08:59 PM
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From: https://www2.mazda.com/en/100th/
there is a fuel pump test connector, its yellow, 2 pin, on the right shock tower, turn the key on, but leave the engine off, jump the connector, and look for leaks
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Old Sep 17, 2014 | 09:19 PM
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From: Moreno valley Ca
Originally Posted by j9fd3s
there is a fuel pump test connector, its yellow, 2 pin, on the right shock tower, turn the key on, but leave the engine off, jump the connector, and look for leaks
how do you jump it? with an voltmeter?

sorry im stupid lol
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Old Sep 17, 2014 | 09:30 PM
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Well i couldn't get a visual when it was leaking (dark as hell). Do you suppose i remove the UIM for a better judgement.

i cant see anything
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Old Sep 17, 2014 | 10:51 PM
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From: bloomington, mn
Originally Posted by j9fd3s
there is a fuel pump test connector, its yellow, 2 pin, on the right shock tower, turn the key on, but leave the engine off, jump the connector, and look for leaks
^
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Old Sep 17, 2014 | 11:31 PM
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From: Smiths Falls.(near Ottawa!.Mapquest IT!)
Originally Posted by Game of the Wangan
Well i couldn't get a visual when it was leaking (dark as hell). Do you suppose i remove the UIM for a better judgement.

i cant see anything
I think you should wait until Day time..(no offense!) then test to see where your leak is by jumpering the fuel connector(key ON..DO NOT START THE CAR.)

Jump the connector by sticking a small wire from one side of the connector to the other of that two terminal connector..(think of it as "shorting out" that connector.)

A paper clip works great.
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Old Sep 18, 2014 | 01:58 AM
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From: Moreno valley Ca
Originally Posted by misterstyx69
I think you should wait until Day time..(no offense!) then test to see where your leak is by jumpering the fuel connector(key ON..DO NOT START THE CAR.)

Jump the connector by sticking a small wire from one side of the connector to the other of that two terminal connector..(think of it as "shorting out" that connector.)

A paper clip works great.
thanks ill see tmorrow morning
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Old Sep 18, 2014 | 03:54 PM
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From: YYZ
https://www.rx7club.com/2nd-generati...erence-671004/

See post #3, picture #5 for yellow fuel check connector.
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Old Sep 18, 2014 | 06:12 PM
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From: Smiths Falls.(near Ottawa!.Mapquest IT!)
I sense a fuel leak..
LOOK there it is!
Attached Thumbnails Fuel Leak problem-thc0ab019k.jpg  
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Old Sep 19, 2014 | 08:23 AM
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you did check to see if the line is rotted out right?
just takes a pin hole


it has happened to me with this car with the fuel line and years ago with the PS cooler line
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Old Sep 19, 2014 | 01:36 PM
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From: Belleville, Illinois
Are the fuel injector's wet? It might just be an oring.
If you've had the fuel rails off recently, you might make sure they are torqued properly. If the primary rail is missing the insulator it will leak. And then pin holes in the fuel lines etc.
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