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Author
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Topic: NO START I HAVE SPARK HOW TO TEST FUEL SYSTEM
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SALEENGTSPORT
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Member # 6151
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posted
 
 
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
Posts: 39 | From: SAN JOSE | Registered: Oct 2005
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P.B.R .stangs
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Member # 6544
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posted
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 ]
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86 gt (parted out)
90 lincoln mark 7 (sold)
99 cobra (sold)
89 5.0 lx hatch (sold)
Posts: 167 | From: fair oaks/sacramento | Registered: Feb 2006
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Pai
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Member # 8901
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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"
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'94 5.0 Trick flow heads,Trick flow cam,Shorties,Cold air, UnderdirvePulleys and 355 gears Formerly known as Projectfox87,
Posts: 218 | From: Sacramento | Registered: Jan 2009
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SmokinLX
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Member # 1684
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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??
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Dont claim power if ya cant mile per hour. 10 second AOD
Posts: 4388 | From: East Bay | Registered: Aug 2002
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92stangLX
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Member # 3252
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posted
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]](graemlins/patriot.gif)
[ February 02, 2009, 03:49 PM: Message edited by: 92stangLX ]
Posts: 5302 | From: San Francisco | Registered: Sep 2003
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