1992 Chevrolet K1500 Logo
Posted on Jun 28, 2011
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I am experianceing fuel problems at the trottel body carburator the injectors are makeing a funny buzzing noise when throttle is pushed but I get no fuel

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  • Master 2,559 Answers
  • Posted on Jun 28, 2011
Anonymous
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Joined: Jan 06, 2009
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You need to check the fuel pump and fuel filter, the sound means the injectors are working but no gas is getting to them.

A

Anonymous

Does the fuel pump work?

Do you have fuel pressure?

I assume it will not start

Does it start when you put gas in a
spray bottle & spray the throttle body

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03 3.7 have new o rings for bottom of injectors do you put it on the head first or on the injector just put head gaskets on jeep

old post but see it asked many times.
assemble the rail first, its 1 piece so must be ready first.
3.7L Engine (FSM) RTM?
(1) If fuel injectors are to be installed, refer to Fuel
Injector Removal/Installation.
(2) Clean out fuel injector machined bores in
intake manifold.
(3) Apply a small amount of engine oil to each fuel
injector o-ring. This will help in fuel rail installation.
(4) Position fuel rail/fuel injector assembly to
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(5) Guide each injector into cylinder head. Be careful
not to tear injector o-rings.
(6) Push right side of fuel rail down until fuel
injectors have bottomed on cylinder head shoulder.
Push left fuel rail down until injectors have bottomed
on cylinder head shoulder.
(7) Install 4 fuel rail mounting bolts and tighten.
Refer to torque specifications.
(8) Install 6 ignition coils. Refer to Ignition Coil
Removal/Installation.
(9) Connect electrical connectors to throttle body.
(10) Connect electrical connectors at all fuel injectors.
To install connector, refer to (Fig. 37). Push connector
onto injector (1) and then push and lock red
colored slider (2). Verify connector is locked to injector
by lightly tugging on connector.
(11) Connect necessary vacuum lines to throttle
body.
(12) Connect fuel line latch clip and fuel line to
fuel rail. Refer to Quick-Connect Fittings.
(13) Install air box to throttle body.
(14) Install air duct to air box.
(15) Connect battery cable to battery.
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Throttle body

Cleaning the throttle body often fixes this problem otherwise you will likely need to replace the throttle control motor. At the throttle control motor monitor the clutch operation. Check to see if the computer is supplying the clutch circuit with a 12 volt square wave pulse signal. With the key in the on position, check to see if the throttle motor makes a buzzing noise as the throttle is opened and closed. With the key off, push the throttle plate open with your finger and allow it to close. The throttle plate should open and close smoothly.
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I'm having a problem. I have an 84 mustang gt

The 1984 model could be throttle body injected or a regular 4 barrel carb. The GT model is supposed to have a carb.
CFI is central fuel injection which is like TBI. The throttle body has two injectors mounted in the center, one for each bank.
If it has a carb you may have some adjustments you can make. If it is fuel injected you don't. The computer monitors the engine temp and exhaust gas to regulate fuel mixture.
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Throttle body float stuck

They are pulling your leg

Only Carburators have Floats

A Throttle Body has Injectors

Could be an issue with the Mass Air Flow Sensor

Wrong reading on air flow you add too much fuel
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Cant find the fuel injectors 1987 for ranger 4 cylinder

not a 100% but i think that has throttle body injection that would be a unit thats looks like a carburator and has a injector in the center
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I'm having my injectors cleaned on my '04 f150. The shop suggested that I also service the throttle body at $100. Is this common and a suggested service?

There are two kinds of injection... throttle body looks like a carburator, and has one or two injectors in it,
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you really can't see much of it.
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Running rough and buzzing at throttle body injectors

Sounds like the engine has a vacuum leak at the throttle body area.
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