Question about 1996 Honda Accord

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My 1996 honda accord consumes too much fuel in a ratio of 1-6 km /liter, what seems to be the problem? I have it tuned up, cleaned the throttles, etc,, but to no avail. whats the best thing to do?

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Since you've cleverly already done the normal tune-up items that preserve the 96 Accord's good fuel economy, its time to move onto the tougher adventures.

Cars with outrageously bad fuel consumption are losing fuel somehow (aka leaking).
(a) There's a fuel tank drain plug on the bottom of the fuel tank (used to drain tank for service) - make sure its tight and that the tank isn't leaking fuel there.
(b) check your fuel lines - there are 2 (one supplies fuel to the engine, and the other returns excess to the tank). If either is leaking, your car will lose petrol quickly.
(c) the evaporative fuel canister - instead of absorbing vapours, it may be full of fuel and leaking..
(d) check your fuel rail - its pressurized with fuel while the car is running - it may be leaking - and if it is: (1) the top of your engine will soon catch fire (2) the fuel may be evaporating as soon as it leaks, since the top of the engine gets so hot.

Use a fuel pressure gauge to test the fuel pressure in your 96 Accord's fuel rail - attach your
(with an appropriate (brass) adapter) to where the banjo bolt enters the top of the fuel filter - as
described in this passage from the Honda repair manual:

From the 1996 Honda Accord repair manual:
Note that this part of the Honda manual fails to mention that before you disconnect the negative terminal of the battery, you must note (and write down) the 3-digit radio lock code
--- begin excerpt ---
The Fuel System Pressure Specification


38-46 PSI (Pounds per Square Inch)Remove the ground cable from the negative battery post and also remove the fuel tank filler cap. Slowly release system pressure at the fuel filter and cleanup spilled fuel. Remove the Banjo bolt and install a fuel pressure test gauge. Reconnect the battery ground cable and proceed to start the engine and allow the system pressure to stabilize. While the engine is at idle, block off/pinch the number (1) vacuum line to the fuel pressure regulator and visually verify the fuel pressure reading on the test gauge.
--- end excerpt from 1996 Honda Accord repair guide ---

(e) possible leaking fuel pressure regulator - located at back of top side of engine, and looks like an
enlarged fuel filter - with hose clamps on either end clamping the fuel line. Retighten its bolts to 12 Nm (9 ft-lbs) when done checking it (for leakage).

(f) to move on from fuel - if you're getting only partial ignition, your fuel economy will suffer too - but you'll smell alot of unburned fuel in your exhaust (and get alot of backfiring). Use your HEI (high energy ignition) tester to rule out ignition (spark) problems.

Posted on Jan 02, 2011

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Hi,

A Honda Accord is a full size car/heavy and therefore would have high gas consumption, probably around 8~10 Km/L city driving. Highway would roughly be 10~12 depending on your driving habits.

A full tune-up of course would help which may include but not be limited to change of sparkplugs, adding car/injector cleaner to the tank, checking/replacing the air cleaner, double checking/cleaning/replacing the MAF (if it has got one).

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

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