Extreme fuel sonsumption+ Idle Bog

Depending on the year make and model, a DTC (diagnostic trouble code) would help. Is the check engine light on when it does run? Testing needs to be done. Check for spark at the plug, make sure fuel pressure is what it should be and that the fuel injectors are working. If all that is good, I would check compression and timing.

Check fuel pressure

reset the ignition timing to the manufacture specification.Test the cables+spark plug , of course the EI can be faulty.
Run the scanner for o.k diagnostic, do not waster your time , and your money.

God bless you

Chances are you have an oxygen sensor problem. When the engine warms up, the engine computer moves from open loop operation to closed loop, and it then uses the O2 sensor readings to adjust the fuel. If the sensor(s) is contaminated, it will send a false reading to the computer causing this problem.

Change the Fuel Filter as well. Also check your spark system (plugs, wires, distributor) and your Air Filter.

If it turns over the problem is either the spark plugs or the fuel filter or fuel pump. Begin by checking the spark plugs and changing the fuel filter.

have you replaced the fuel filter? If it is clogged it will restrict flow.

Hi, this is normally a fuel transfer issue. i recommend changing the fuel filter and fuel pump if not done already. I also would change the air filter as well.this will help with the air and fuel flow.

If possible, it would help even more if you would change the spark plugs and wires as well.

To top it off, Add a fuel system cleanser. Techtron makes some of the best fuel additives on the market. This type of fuel system cleaner will scrub the fule lines and intake as well, in return, cleaning out all carbon deposits that may be causing spuddering and obstructions.

try the distributor I had the same problem with mine a couple weeks back

Cheapest possible solution is the fuel filter. it is a black canister on the firewall with two steel fuel lines going into it. Beyond that, it could be your fuel pump ($100+) or your distributor(200+) . Check all your vacuum hoses for leaks. It will have to be driven by a mechanic to determine the true diagnosis.