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Fuel injection problem with 1992 ford 460 eng

Have 50lbs fuel pressure in fuel rail. It will start for a few seconds if I squirt gas in the intake. otherwise no start, just cranks

Posted by Anonymous on


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Posted on Jan 02, 2017

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SOURCE: 1988 jeep 4.0 battery installed backwards now cranks but wont start

have you checked all ofyour fuses? usually when you hook up a battery backwads you end up blowing a fuse and or fry your alternator on older modeled vehicles as there is no protection for it.

Posted on Oct 18, 2008

  • 41 Answers

SOURCE: car will not start,but has spark and gas to fuel rail,plenty of pressure at fuel rail

You need a scan tool to go any further.

Posted on Nov 10, 2008

  • 15 Answers

SOURCE: my s10 will turn over, but wont squirt gas through injecter

Does it crank? Do you have any codes? Check engine light? Do you have spark? No spark check coil, and connections, also it would be nice to know what year it is. Get codes read. No crank check battery and starter. No codes or lights check crank position sensor, make sure your pcm is good after replacing your ignition mod you could have blown it if you did do it right. (engine computer) Check cam sensor if applies. Crank and cam could prevent it from starting and I know one I think cam controls pcm's fuel delivery on gm's

Posted on Dec 30, 2008

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SOURCE: Engine starts then dies, replaced filter,pump,and

check fuel pressure to the fuel rail to see if you are recieving fuel to the fuel rail if so the injectors are suspect

Posted on Jun 22, 2009

  • 1428 Answers

SOURCE: i have a 98 dodge

There can be a misfire too from the cylinders.

An engine that hesitates, stumbles or misfires when accelerating or when it is under load is an engine that is either sucking too much air, not getting enough fuel or misfiring. If the Check Engine Light comes on, you may find any of the following codes:

• P0171, P0174 Lean fuel condition codes
• P0120 to P0124 Throttle position sensor codes
• P0222 to P0229 Throttle position sensor codes
• P0400 to P0409 EGR related codes

If there are no misfire codes, a common cause of acceleration stumble is a bad throttle position sensor (TPS). The TPS tells the computer how far the throttle is open. The computer uses this information to determine how much fuel is needed to maintain the correct air/fuel mixture and when extra fuel is needed if the throttle suddenly opens wide.

Another common cause is dirty fuel injectors. If varnish deposits have built up in the tips of the injectors, they won’t spray as much fuel as they normally do, or will “dribble” fuel instead of spraying a fine mist. This creates a lean fuel mixture and conditions that are ripe for stumble and hesitation (also misfire). Look at short term fuel trim (STFT) and long term fuel trim (LTFT) with your scantool. If the numbers are high, it tells you the engine is running lean and the injectors need cleaning. Treat mild cases with a high quality fuel-injector cleaner additive. Severe cases require professional cleaning equipment.

Also if this sensors apply to your vehicle, camshaft sensor or crankshaft sensor if sensors bad you don't get any spark. Also run a scan on the car.

Good luck and rate this solution, please.

Posted on Mar 20, 2010

Testimonial: "thanks for the quick response! I learned alot, although has not fixed the problem yet. thanks so much though, we are going to replace the sensors. "

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My truck starts and dies after a few seconds but if i press the gas it dies instantly

Have you checked the throttle body to see if the ventury butterfly is operating properly? Its most likely a fuel prob. You may want to check fuel pressure as well. So e parts stores will rent or loan a gauge to check it at the fuel injection rail at the intake manifold. I would start there to make sure you are getting proper pressure and volume. Ask your parts store or dealer for what pressure should be. And make sure you leave the guage on for ten min or so while the car sits not running to see how fast pressure falls.

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Found this in a Yahoo post:

Check to see if you are losing prime pressure from fuel pump.
ASD relay kicks for a few seconds when ignition is turned on and fuel pump primes up pressure to injectors. If you have a leak down from the pump this few seconds is not enough to get enough pressure to build. When engine is turning over, ASD relay latches on and fuel pump runs therefor building enough pressure to injectors on the second start. The fuel rail has a port to hook up fuel pressure tester to test this issue. If this is the issue, check valve in pump is failing.
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1 Answer

What would make a not start unless I pour gas into intake

Hi Clyde:
Since you mention "gas rail" I'm assuming fuel injected.
I'd check the fuel pressure in the rail. Should be around 40 PSI.
If pressure is OK then injectors not working. Time to check cps.
You know the spark side is OK since it will run.

Nov 08, 2015 | Cars & Trucks

1 Answer

Wont start sometimes, only when i pour gas into the intake manifold. and then cant keep it started. only stays running by lightly tapping the accelerator

it sounds like there is no fuel getting to intake.
when you step down on accelerator, it is designed to squirt a shot of fuel into the intake, which would keep it running for a few seconds. same as pouring gas down intake.

you never stated if you had carburation or injection system, in either case no fuel is getting through on its own.
which could be a variety of problems depending on which system you had.

Dec 12, 2014 | Cars & Trucks

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I have to prime my 1991 Ford F-350 fuel injected 460

There is a check valve in the fuel pressure regulator that maintains fuel rail pressure when the engine is not running. Check it first before going after a leaky injector.

Oct 19, 2014 | 1991 Ford F350

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Will not start

if you could check fuel pressure is normal, if no pressure then no spray on injectors engine will not start, possible problems are clogged fuel filter, fuel pump not working properly, what i do to check is i squirt fuel on intake manifold and start the engine if it does start, only means one thing no fuel injected, so check fuel line, filter, pump, look for leaks. and fix

Nov 23, 2013 | 2006 Honda Accord

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I have a 95 ford f-350 with a 460 and i want to know why its running so rich new o2 scencer new fuel pump. it is fuel injected

i don't know man my 1992 ford f250 460 is doing the same thing. it is running way to rich and bearly idles .

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88 ford f150 inline 6 wont start...

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