Question about 1988 Nissan 300ZX

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Flooding ,to much fuel .to engine ,it is not the fuel regulator

Flooding ,to much fuel

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Your sparkplugs might not burning all the fuel thats why its flooding. try changing your sparkplugs for better burning

Posted on Jul 02, 2009

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Posted on Jan 02, 2017

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SOURCE: engine floods when started,replaced oxegen sensor,

Generally, the first thing to check with an engine that floods on warm start is the water temperature sensor that talks to the fuel injection system. The only way the fuel injection system knows how much fuel to supply right after startup is by checking the water temperature. If the sensor says the water is cold, the fuel injection system will supply a lot of fuel. If the reading is in the valid range (just inaccurate) the computer will not recognize that the sensor is bad.
There are other possible problems, but this is where I would start. Someone needs to measure the resistance across this sensor and compare it to a chart in the manual to see if the resistance is correct for the current temperature that the sensor is seeing.

Posted on Jan 27, 2011

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SOURCE: when starting my 94 suburban, the fuel injectors flood the engine

replace them the seals at the top leak over time. Its throttle body injection and there are only 2 of them and are easy to replace.

Posted on Aug 05, 2009

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SOURCE: fuel pump issue, gradual flooding

NEED TO QUIT GUESSING.. IS THE CHECK ENGINE LIGHT ON.. SCAN FOR CODES. IF NONE THEN NEXT STEP IS TO CHECK FUEL PRESSURE.. IF IT IS GOOD.. THEN IF IT IS FLOODING OUT. ONCE IT IS FLOODED YOU CAN PULL SPARK PLUGS AND FIND THE ONE THAT IS WET,,, SUSPECT THAT INJECTOR TO BE STUCK OPEN

Posted on Nov 29, 2009

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2 Answers

1997 sl2 satun started with rough idol now won't start . cranks over and floods. has new fuel filter & air filter


Check the fuel pressure regulator. Pull the vacuum hose off it, If it smells of gas, Replace the regulator. Diaphragm broke and is flooding the engine threw that vacuum line. You'll also need to replace the spark plugs. Gas will foul them out also.

Dec 31, 2016 | Cars & Trucks

1 Answer

My 98 Explorer is flooding out . Fuel pump is good and.i just replaced plugs and wires yesterday


How do you know its flooding out? Black smoke from tailpipe? An over fueled engine can be caused by numerous things. Check fuel pressure regulator on the fuel rail for an internal leak. Remove the vacuum hose to the regulator and check to see if fuel is in the vacuum hose. IF so, replace the regulator. You will need a scan tool to check the operation of the coolant temp sensor,map sensor,mass air flow sensor as these sensors/wiring circuits will adversely affect fuel delivery

Jan 14, 2016 | Cars & Trucks

1 Answer

1991 gmc sierra is getting way to much fuel when starting. Flooding itself. Why


Pressure regulator or fuel injector lines leaking. The check engine light is on?

Jun 06, 2014 | 1991 GMC Sierra

1 Answer

2008 Ford f150 misfiring and flooding itself out. What is wrong?


The engine is getting extra fuel from a ruptured fuel pressure regulator it is located on the fuel rail and gets manifold vacuum to operate remove small hose and if has gas in it the replace it.

Apr 22, 2014 | 2008 Ford F-150 SuperCrew

1 Answer

Flooding starting


Check fuel pressure. You may have a bad fuel pressure regulator. Pressure may be too high, or the regulator diaphragm may have failed-if it is vacuum operated, pull off the vacuum line-if any evidence of gas in the line, the regulator has failed, and letting gas get sucked into the engine through the vacuum line. That could explain the gas smell and the flooding.

Dec 26, 2013 | Land Rover Discovery Cars & Trucks

1 Answer

Engine flooding


Check the fuel pressure. The pressure regulator may have gone bad and is delivering too much pressure to the fuel rail, thereby flooding the engine.

Dec 07, 2013 | Cars & Trucks

1 Answer

Fluids out when you try to start


double posted, and fluids? you mean FLOODS.
see previous post,
there are other ways to flood any motor.
one other is (iSC /IAC devices are stuck closed) gummed up.
this cause no starting air, no air means flooding.
I cant see your car, and see if starting with 10% throttle solves the flood, but you can.
also WOT cranking, cuts all fueling and can not flood and will start any flooded engine.
but if this still floods,now, that is bad injectors. leaking.
WOT cuts injection pulses dead, and no fuel flows, cranking.
knowing these facts on EFI makes finding causes easy.

Sep 20, 2013 | 1995 Honda Passport

1 Answer

Fuel flooding


think you put a dodgy part on no doubt a cheapy made in china part ,try a genuine bosch

Jul 16, 2013 | 2000 Nissan Altima

1 Answer

I have fuel but flooding truck i have changed fuel pump ,relay,everything to do with fuel still floods out


Have the cpu read for fault code.Have a manifold pressure and pump pressure test done. Check oxygen sensor for operation

Feb 27, 2013 | Cars & Trucks

2 Answers

Floods when cold


Define flooding.

  1. Black smoke out of the tail pipe?

If the fuel return line is plugged,it will flood.If the fuel pressure regulator has lost its vacuum signal ,it will flood.

If there is a large vacuum leak,the O2 will see a lean condition and cause the rich condition.gas mileage will suck,big time.

This "flooding" happens when the engine is cold? ONLY?
Be sure the air filter is not clogged and the PCV is not plugged up solid.
Also,there are a few tubes from the valve cover that vents oil vapors into the air filter housing.

During this flood mode,hold the pedal to the floor and shut the engine OFF-it should NOT keep running.(Leaky injectors)...

Do this when engine is hot and cold.

Dec 25, 2012 | 1990 Volvo 740

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