How do i de-pressureize the fuel system on a 94 accord to replace the fuel filter

It is possible you have a fuel system issue. Check your fuel pressure first. This model has two different engines (SOHC or a DOHC). The fuel pressures specifications are the same. 36 psi (250 kPa) at idle (with vacuum) and 43 psi (294 kPa) at wide open throttle (no vacuum). Also check the fuel filter for contaminants. Your question indicates a fuel filter replacement, but make sure you check the pressures.

Fuel pressure at idle with the vacuum line attached to the pressure regulator 34 to 38 psi. with the vacuum hose connected the pressure should be 42 to 45. Try to collapse or block the return line and see if the pressure goes up.Also closely inspect the MAF air duct for torns and false air

I believe a 94 astro has a cpi system this is a central injector with 6 tubes with poppet valves this located inside of the intake manifold,the top half of the plenum comes off and then the central injectoris inside,make sure your fuel pressure is up to spec also

follow the gas lines from fuel tank, more than likely under driver side door

pass side of car behind the right wheel inside frame rail

Be sure to relieve the fuel system pressure first.

Snap the tool over the fuel line and push it into the fitting to release the locking fingers.

Once both fittings are released grasp the fuel hoses, one at a time, and pull them straight off the filter.

Watch out for fuel spillage.

Sheilah

You could check pressure and flow at the fuel filter.If the exhaust is VERY quiet it could be a plugged catalytic converter.

Try changing the fuel lines, if they are cloged from debris that could be the cause.

All of the fuel filters with exception of the V6 Odyssey models are located on the vehicle's firewall, in line with the fuel line feeding the engine's fuel rail. The fuel filter on the 3.5L V6 Odyssey is located in the fuel tank and requires fuel pump removal to access. Fuel filters located on the firewall should be replaced if the fuel filter exhibits signs of seepage or corrosion. Always replace a fuel filter and its sealing washers if the fuel system has become contaminated, if the fuel system fuel pressure drops below specification prior to replacing the fuel pump, or whenever the fuel pump is replaced.

well, if you thik about to change the fuel pump maybe resolve the problem,remove rear seat bottom then remove the gray cap and disconnect de wire to access to pump