My gas golf car leak gas over the exhaust is two cycle engine.
Well i desassamblle an reassamble the carburetor several times I regulate the floater in diferent levels even at the minimun level of capacity and when I try to starting the engine takes to long and smels a gasoline after the engine stars dont runs good runs slow and smokes a lot but the smoke is between fog and smoke can some body help me to fix this thank you all. P.S.:when the car is parked leaks the gas. And when the engine stars (this is very hard)run slow and smokes (it Have piston and rings new)
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Some fuel regulators are located in the tank as part of the fuel pump assembly. If the fuel pressure regulator has gone bad, it can leak fuel in the engine, contaminating the engine oil.
Symptoms of a bad regulator is: Poor gas mileage. Smell of gas in the engine compartment. Fuel is leaking. Black smoke coming out of the exhaust (tail pipe). Failed emissions test. Check engine light is on.
I don't know if this will help you or not, but I've had several friends with Volkswagens & have run across this problem after they ran out of gas.
the fuel line ran close to the exhaust manifold & the gas would vaporize in the fuel line, causing a vapor lock in the line, starving the engine of fuel.
the fuel line had to be taken off at the carburetor & fuel sucked up through the line.
future problems were eliminated by rerouting the fuel line.
Hello Travis, from your description it sounds like a fuel delivery problem. You can check the fuel pressure regulator by connecting your fuel pressure gauge. With engine running at idle, disconnect the pressure regulator, the fuel pressure should increase 5-10 psi---if it does not, the regulator is defective. Also check your MAF sensor, you can remove and clean it with an electronic contact cleaner. (spray can) also check for vacuum leaks, hoses, etc. as unmetered air entering the engine under load or deaccelreation will cause the exhaust "backfire"
Exhaust Gas Recirculation (EGR) System
The exhaust gas recirculation (EGR) system is designed to:
reintroduce exhaust gas into the combustion cycle.
lower combustion temperatures.
reduce the formation of oxides or nitrogen (NOX).
The amount of exhaust gas reintroduced and the timing of the cycle varies by calibration. Timing and volume are controlled by the following:
exhaust system back pressure
engine coolant temperature
air charge temperature
The EGR valve (EGR valve) (9D475) is vacuum-actuated. The vacuum hose routing diagram is shown on the Vehicle Emission Control Information (VECI) decal.
The EGR system is a differential pressure feedback EGR Sensor system. Differential pressure feedback EGR Sensor is a subsonic closed loop EGR system. The differential pressure feedback EGR system:
monitors EGR flow rate by the pressure drop across the metering orifice located in the EGR tube.
uses a differential pressure feedback EGR sensor as the feedback device.
uses the EGR valve only as a pressure regulator, rather than a flow metering device.
controlled pressure is varied by the valve movement using vacuum output of the EGR vacuum regulator solenoid (9J459).
allows for a more accurate assessment of EGR flow requirements.
Differential Pressure Feedback EGR Flow Diagram
Differential Pressure Feedback EGR Sensor
Disconnect engine control sensor wiring (12A581) from Differential Pressure Feedback EGR Sensor.
Disconnect Differential Pressure Feedback EGR Sensor hoses from EGR valve to exhaust manifold tube (9D477).
Remove retaining nuts or bolts (depending upon application) and EGR Differential Pressure Feedback transducer.
Follow removal procedure in reverse order.
Tighten retaining nuts or bolts (depending upon application) to 5-7 Nm (45-61 lb-in).
If they are truly raw gas fumes you have a gas leak. DO NOT DRIVE THE CAR. It can start on fire if the gas leak is under the hood, or if it's somewhere else and someone throws a **** out the window it could start on fire too. I would have it towed to a mechanic immediately. If you are mechanically inclined and know where your fuel filter is under the hood you could check those fuel lines first to see if they are cracked or leaking. If you have jackstands you could put the car up on 4 of those and check underneath the car and inspect the lines from the tank to the filter to the engine. If you are not mechanically inclined I would air on the side of caution and take it to a mechanic ASAP.
If it is exhaust you are smelling and not raw gas, it is still not safe to drive. Exhaust fumes do not take long to put you to sleep and when you go to sleep you do not usually wake up. I would get it in to get looked at before driving it again. Good Luck!
recommend you pull the vacuum hose off the fuel pressure regulator at the end of the fuel rail and check for gas in the line. You can plug the hose with a golf tee and start the car, then see if any gas comes out of the vacuum port of the regulator. This would indicate the regulator diaphram has failed and is causing the engine to run rich. Replace the regulator if it leaks gas out the vacuum port. The regulator looks like the below picture.
Sounds like a vacuum leak in the motor. Backfiring may be its own problem altogether. Backfiring only occurs when cold air is being introduced into a hot exhaust stream or when the timing is off. Check for vacuum leaks under the hood and leaks in your exhaust. If you have a leak in your exhaust it could be interfearing with your emission sensors and giving your motor false information.
There are many causes to this problem, but you might need to take it to a shop to find the real problem. Here's everything I know about it. P0171 System too Lean (Bank 1)
How does a P0171 code trigger the check engine light? This code will trigger the check engine light as follows:
The adaptive fuel strategy in the vehicle's computer constantly monitors the fuel delivery system to make sure the engine is running at an optimum air to fuel ratio, which is 14.7:1. The computer adjusts injector pulse width to regulate the amount of fuel going into the engine. The oxygen sensors relay information to the Powertrain Computer Module (computer), informing it of the oxygen content in the exhaust. This information is translated by the computer, and used to determine if more or less fuel is needed. The computer will then adjust fuel flow (and possibly other related engine operating characteristics), to keep the correct air fuel mixture. This loop continues as long as the engine is running.
A P0171 check engine light code is set when the computer has reached a rich calibration limit and can not add enough fuel to maintain the correct mixture.
Leaking or faulty fuel pressure regulator Plugged or dirty fuel filter or lines Fuel pump weak or defective check valve Injectors leaking or faulty Low fuel pressure or running out of fuel Leaking EVAP system components Faulty FRP (Fuel Rail Pressure Sensor)
Air Intake System:
Vacuum leaks Contaminated, damaged or faulty Mass Air Flow sensor PCV valve leak or stuck open Air induction turbulence caused by wrong filter Oil dipstick not seated Air leaks after the Mass Air Flow Sensor (MAF) Oil coated aftermarket air filter
Any exhaust leak before or near the oxygen sensors
Vacuum line disconnected from EGR System Module (ESM) EGR valve, tube or gasket leak EGR vacuum regulator valve leaking