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

II gen rx-7 fuel system problem

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Old Dec 24, 2016 | 04:09 AM
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From: Estonia
II gen rx-7 fuel system problem

Hi,

I´m having a problem with the fuel system(i thinks so). Bought a car with a broken fule pump, replace it changed oil and other liquids and start the car. Begin car worked perfecly, bat after 5 minutes it started to gabbling and the power dissapeared. Started to thinkig what te problem is then i remove sparks and saw that these are wet with oli. Cleaned it up and start the engine and again the same problem. Can someone help me?
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Old Dec 24, 2016 | 09:20 AM
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What's the history of the car (i.e. What has been repaired/replaced, has motor been disassembled or removed)? These cars are pretty old at this point and the failures can stack up, as well as mistakes made.

Injectors could need professional cleaning or replacement. Fuel pump resistor relay could need replacement or bypass. Injector clips could be broken or on the wrong injectors.

I would start by checking the correct clips are going to the correct injectors. Check the voltage AT the fuel pump. Finally remove the injectors and jump the fuel test connector to observe the spray patterns and flow (visual check just to verify nothing is drastically wrong).
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Old Dec 24, 2016 | 10:03 AM
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compression test
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Old Dec 24, 2016 | 02:31 PM
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I was thinking that compression test but how much the normal compresion is?
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Old Dec 26, 2016 | 01:09 PM
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roTAR needz fundZ
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Normal compression is 3 even bounces of 90 psi or better on each rotor
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Old Dec 27, 2016 | 10:32 PM
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From: Smiths Falls.(near Ottawa!.Mapquest IT!)
Compression test:
Push her Nipples in..if they bounce back she is about 20...
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