Question about 1990 Nissan Pulsar

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Engine is not getting fuel. fuel pump is

Engine is not getting fuel. fuel pump is operating, i get fuel right up to the throttle body, but the car won't start. if i add fuel manually into the throttle body, it will start.

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  • Nissan Master
  • 5,763 Answers

Sounds like an injector problem, will have to test with a noid light, if its getting power then injector is bad.

Posted on Oct 03, 2009

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I have to prime fuel pump before I start the engine. What can cause this. Brand new fuel pump. 1999 GM yukon


how do you prime an electric fuel pump thats buried inside a fuel tank ---are you getting fuel to the throttle body --is pump turning on --retest pump new doesnt mean free from defects if this is the first replacement pump for vehicle was the connection to pump upgraded /changed out [problem with connection corrosion and damage would incur causing pump failure or non operation of pump ]also check lines are not kinked and pump installed correctly

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Engine bucks and backfires through throttle body under acceleration


for an engine to backfire through the throttle body means that the inlet valve is still open when spark occurs . That means that the timing is too far advanced . IT may also mean that the tappet clearance is out if manual adjustment or the hydraulic followers are pumping up and holding the valves slightly open especially at revs.

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Engen problem and missing


Sir, your question is not very clear, but I will still try to post a solution here. Engine missing could be due to any problem in fuel system, ignition system, engine or ECM as well.

LOW ENGINE IDLE SPEED (Poor idling):
-Throttle body (do the cleaning and idle speed learning)
-A /C signal circuit
-Fuel pump control circuit
-Fuel pump
-Intake system
-P C V valve (clogged or open) and hose

ROUGH IDLING:
-Cylinder Compression
-Ignition system (Igniters, spark plugs, wiring harness)
-Spark plug fouled, gap too wide or too short. (1.00-1.1 mm)
-Fuel injector circuit
-E C M power source circuit
-Fuel pump control circuit
-Fuel pump (required pressure 44 psi - 49 psi)
-Throttle body (cleaning)
-Intake system
-P C V valve and hose
-Air fuel ratio sensor
-Heated oxygen s ens or
-Mass air flow meter
-Idle hunting
-Throttle body
-Intake system
-P C V valve and hose
-Air fuel ratio sensor
-Mass air flow meter

HESITATION/ POOR ACCELERATION:
-Fuel pump control circuit
-Fuel pump
-Spark plug
-Ignition system
-Fuel injector circuit
-E C M power source circuit
-Mass air flow meter
-Throttle body (do cleaning)
-Intake system
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Jan 18, 2014 | 2008 Toyota Corolla

1 Answer

Fuel metering device location ?


Hi. Not exactly sure what your looking for ..... The fuel is delivered to the engine via a fuel rail and each cylinder has a injector to deliver fuel to that cylinder.

Fuel is pumped into the fuel rail at 35 psi from a pump in the fuel tank.....don't worry, never heard of one causing a fire. There's not enough air in the gas tank to support a flame.

There is also a 'throttle body' to allow air to enter the engine but iit is not like an old carburettor also delivered fuel.

If you look in the engine bay you will see the cables that operate the throttle body. there will be two cables, one for the throttle controlled by the drivers pedal and one cable operated by the cruise control.

Hope this is some help.

Sep 18, 2011 | 1990 Lexus LS 400

1 Answer

Fuel Injection Problem


Is your cat. convertor blocking up? If it is this condition, it could very well be the problem. Disconnect the convertor start the car & see if it takes the gas well. If it does, change the cat. convertor. Good luck!

Apr 22, 2010 | 1985 Lincoln Town Car

4 Answers

Car wont start, install new fuel pump ,if u dump little gas in carb will run for a few seconds. ALSO THIS CAR SAT FOR YEARS NOT RUNNING


OK, first, let's clarify one point. Your 1986 Chevrolet Nova does not have a carburator, it is equipped with Throttle-body Fuel Injection.

You should be able to look into the throttle body and see fuel spraying from the fuel ijector while you are cranking the engine over. If not, then there is a whole list of things that could be causing the fuel to not spray. Here are some of the possibilities:

Low fuel pressure (for several possible reasons)
no B+ feed to injector (for several possible reasons)
bad crank sensor
bad PCM
broken injector wires
bad injector

If it runs with fuel poured down the throttle-body, it is definitely a fuel-delivery/fuel injection problem.

Oct 17, 2009 | 1986 Chevrolet Nova

1 Answer

Car won't start once in a while, mostly after it sit's a few days. it cranks ok and almost starts. good spark, and has fuel but I can't test fuel pre. if I pull the lines from the tank it starts and runs...


your on the right track,you need three things to run an engine spark fuel and air,you can test your pump another way its primitive take 2+2 carb cleaner get access to your throttle body have someone try starting the engine while another sprays the carburetor cleaner into the throttle body if it runs while you spray and then stops when you dont your fuel pump is the problem.Chrysler is know for this fuel pump problem.

Aug 04, 2009 | 1996 Dodge Neon

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