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cant get my s14 sr to run quite right....

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Old Oct 18, 2007 | 04:28 AM
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Originally Posted by speedbumpsFTL
have you done the simple check list?


like vacuum leaks and such? i had a really small vacuum leak back in the day and my idle was just slightly off but super annoying
im replacing the intake mani gasket... (because i made mine out of autozone gasket material... ) but other than that the only thing i can think of is the guys who put the head on maybe didnt time the cams perfect? lmk what your opinions on that would be.. thanks
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Old Oct 18, 2007 | 01:07 PM
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I would go purchase several cans of Carb cleaner and Check for Vacuum Leaks. Are you Running a Stock MAF if you are running the Z32 Maf Check to see if the Wiring Was done correctly If wired inncorrectly the ECM Would release retarded amounts of fuel. Next To check the TPS you will have three wires Black, Green with a Red Strip, and White. unplug the Pigtail and check for continuity between Black wire and Ground. Second Turn Key on Engine off (ACC. Position) Check Refrence voltage on White wire should be 5 Volts. Lastly plug the Pigtail Back into the Sensor and backprobe the Green with a Red Stripe wire Key on Engine of you should be at 0.45 V (V=Volts). After That I would Test your FPR (Fuel Pressure Regulator). However I have Seen very few FPR's Fail. Any other questions Give me a call I will be more than happy to come take a look at it.
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Old Oct 18, 2007 | 03:00 PM
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Originally Posted by silvia tech
I would go purchase several cans of Carb cleaner and Check for Vacuum Leaks. Are you Running a Stock MAF if you are running the Z32 Maf Check to see if the Wiring Was done correctly If wired inncorrectly the ECM Would release retarded amounts of fuel. Next To check the TPS you will have three wires Black, Green with a Red Strip, and White. unplug the Pigtail and check for continuity between Black wire and Ground. Second Turn Key on Engine off (ACC. Position) Check Refrence voltage on White wire should be 5 Volts. Lastly plug the Pigtail Back into the Sensor and backprobe the Green with a Red Stripe wire Key on Engine of you should be at 0.45 V (V=Volts). After That I would Test your FPR (Fuel Pressure Regulator). However I have Seen very few FPR's Fail. Any other questions Give me a call I will be more than happy to come take a look at it.
carb cleaner is a good tool for checking intake leaks!!!!

my 2cents
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Old Oct 20, 2007 | 11:20 AM
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thanks yea im running an s13 sr throttle body and tps so could that be the problem? ill be replacing the intake gaskets soon soo ill let you know about the vaccum leaks...
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Old Oct 20, 2007 | 12:12 PM
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its dumping fuel you have a fuel related isssue, check injector o-rings, easiest way is just pull the fuel rail and have your buddy turn the key so the fuel pump kicks on but dont turn it over while you hold the rail if it leaks fix it, if not you probly have a bad sensor or ground somewhere causing it to dump fuel. the coolant temp sensor could do this. and if you have a vacuum leak it would run lean because your sucking in more air than the computer sees so your getting more air than fuel and you said your running rich i.e. more fuel than you have air for so your either leaking fuel into the cylinders or the computer thinks it should dump an assload of fuel for some reason
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Old Oct 21, 2007 | 05:23 PM
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Originally Posted by keaser06
its dumping fuel you have a fuel related isssue, check injector o-rings, easiest way is just pull the fuel rail and have your buddy turn the key so the fuel pump kicks on but dont turn it over while you hold the rail if it leaks fix it, if not you probly have a bad sensor or ground somewhere causing it to dump fuel. the coolant temp sensor could do this. and if you have a vacuum leak it would run lean because your sucking in more air than the computer sees so your getting more air than fuel and you said your running rich i.e. more fuel than you have air for so your either leaking fuel into the cylinders or the computer thinks it should dump an assload of fuel for some reason
i took the injectors out tested them and found some dirt around the o-rings they looked good and i cleaned um up... i didnt see any fuel leaks... but just so everyone knows this is whats goin on...




the car wont idle it sounds as if its missing or a cylander is out but if i rev it up it will run fine and it will come down in revs fine untill about 1000-1200 and it just wont idle worth a shit ive tried 2 AAC valves and 2 CAS's.. i did a compression test i got 1)170 2)170 3)170 4)180.. but it still seems that i am getting too much fuel.. i did replace the coolent temp sensor with one from my single cam harnes (its the little one with one wire going to it) should i try another one just in case? i have one from a s14 ka harness... and btw the mafs plug im using is from a dualcam ka harness and could it be that the wires are different from one mafs to another? like different order from male to female connection? lmk and maybe a picture of your mafs plug and the wire order while its connected to your mafs would be nice.. thanks and i hope this info helps
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Old Oct 22, 2007 | 08:22 AM
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bump
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Old Oct 22, 2007 | 08:27 AM
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bad maf and/or fuel pump?
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Old Oct 22, 2007 | 12:17 PM
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Originally Posted by hateshino
bad maf and/or fuel pump?
hmmm possibly.. i got the fuel pump for free from my boy. it works but its a turbo2 rx7 fuel pump... no bueno? and the maf is an sr maf but i got it on ebay...
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Old Oct 24, 2007 | 09:26 AM
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git er runnin gd !
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