This is topic NO START I HAVE SPARK HOW TO TEST FUEL SYSTEM in forum Tech Talk at Northern California Ford Owners  .


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Posted by SALEENGTSPORT (Member # 6151) on :
 
1994 MUSTTANG 8 CYCLINDEDR WHEN I TURN KEY OVER I HAVE SPARK IM THINKING ITS THE FUEL PUMP BUT IM NOT TO SURE I COUL HEAR THE PUMP COMING ON LOW JUST BERLY .. HOW LOUD SHOULD YOU BE ABLE TO HEAR IT? WHEN YOU TURN THE KEY? AND CAN I GET TO THE PUMP FROM THE TRUNK ON A 94 GT? ANY SUGGESTIONS THANKS
 
Posted by P.B.R .stangs (Member # 6544) on :
 
when you go to start your car and the key is in the on position you should be able to here the fuel pump surge for a second or two. and it should be a pretty obvious humming sound. if know sound you could have a bad pump or even a weak pump. or it could even be the fuel pump reset switch. im not sure where thats at on
sn-95's. or you could check the shradder valve at the fuel rail for pressure.

[ January 29, 2009, 06:52 PM: Message edited by: P.B.R .stangs ]
 
Posted by Pai (Member # 8901) on :
 
Reset switch is in the trunk area, behind the driver side tail lights. Its a red button, you cant miss it. Make sure its "in"
 
Posted by SmokinLX (Member # 1684) on :
 
quote:
Originally posted by Pai:
Reset switch is in the trunk area, behind the driver side tail lights. Its a red button, you cant miss it. Make sure its "in"
If He can hear the pump turn on then it's not the inertia switch. You will need some type of fuel guage to verify the pressure which should be 30-40 #'s. If You have an aftermarket fuel pressure regulater then You can buy a small guage that fits into the NPT "sp ?" or You can use a manual guage that fit's onto the fuel rail which is $30-40 buck's at auto part's store. I would change the filter if You can't remember or hav'nt ever changed it "10 buck's and takes 5-10 minutes". If that does'nt work and You still have the stock pump in the tank then You might want to drop the tank and throw a 255 walbro in there. Are You sure You can hear the pump prime up when You turn the key to the on position??
 
Posted by 92stangLX (Member # 3252) on :
 
quote:
Originally posted by SmokinLX:
quote:
Originally posted by Pai:
Reset switch is in the trunk area, behind the driver side tail lights. Its a red button, you cant miss it. Make sure its "in"
If He can hear the pump turn on then it's not the inertia switch. You will need some type of fuel guage to verify the pressure which should be 30-40 #'s. If You have an aftermarket fuel pressure regulater then You can buy a small guage that fits into the NPT "sp ?" or You can use a manual guage that fit's onto the fuel rail which is $30-40 buck's at auto part's store. I would change the filter if You can't remember or hav'nt ever changed it "10 buck's and takes 5-10 minutes". If that does'nt work and You still have the stock pump in the tank then You might want to drop the tank and throw a 255 walbro in there. Are You sure You can hear the pump prime up when You turn the key to the on position??
+1 check fuel pressure at the fuel rails with a gauge. One other thing you cna try is to start the car with your foot on the gas pedel. If you are flooding this could help. [patriot]

[ February 02, 2009, 03:49 PM: Message edited by: 92stangLX ]
 




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