howto releive fuel pressure?
05-10-2005, 12:23 AM
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Car: 91 Camaro
Engine: LO3 305 TBI
Transmission: 5 Speed
howto releive fuel pressure?
in my book it says to take out the fuel pump fuse? ok well i defenitly dont have one!! how else can i let out the pressure so i can change fuel filters?
05-10-2005, 01:46 AM
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Car: 96 Silverado/99 Suburban
Engine: 700 cubic inches of 'Muican Awesome
Transmission: 4L80/4L60
Axle/Gears: Chunky/Clunky
Do like I did, con a your buddy into conning HIS buddy into getting under there....tell him you "THINK" you've let out the pressure properly....then try not to laugh uncontrollably when you hear the slush of fuel spray out and a "HoLy CrAp!" coming from underneath your thirdgen....
05-10-2005, 02:20 AM
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Car: 1992 Camaro RS
Engine: 305 L03
Transmission: Borg-Warner WC T-5
The fuel pressure on our TBI systems is really only relieved through the removal of your gas cap. You should hear hissing everytime you remove it. You are right, there is no fuse as it says in the manuals. When I did my manifold swap and TBI rebuild, I just pulled the gas cap and let it sit for a few hours. When I removed the fuel lines from the TBI there was absolutely no pressure or fuel leakage.
05-10-2005, 02:52 AM
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Car: 91 Camaro RS Convertible
Engine: 305 TBI
Transmission: 5-Speed
Axle/Gears: 3.42
Just take the cap off, it relieves pressure in the whole system. I've taken it off then pulled the fuel lines like 5 minutes later and just a few dribbles came out.
05-10-2005, 07:14 AM
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Car: 91 Camaro
Engine: LO3 305 TBI
Transmission: 5 Speed
ok thank you...also if i leave the line off the fuel filter and crank the car(to get the fuel pump going) would that be a way i could test if the fuel pumps actually working..?(yes i kno it would spray fuel)
05-10-2005, 02:40 PM
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Car: 96 Silverado/99 Suburban
Engine: 700 cubic inches of 'Muican Awesome
Transmission: 4L80/4L60
Axle/Gears: Chunky/Clunky
Get a friend of yours if you can't hear it yourself to put their head down by the rear of the car and put the key to the "ON" position (don't start it) and you should hear about 5 seconds of clicking from the fuel pump. If you hear it that means your fuel pump should be working...
05-10-2005, 04:01 PM
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Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Lets keep your problem to one thread. You will get better answers that way.
Refer to your other thread
https://www.thirdgen.org/techbb2/sho...hreadid=296627
Refer to your other thread
https://www.thirdgen.org/techbb2/sho...hreadid=296627
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