Why are my tbi injectors not spraying?

Why are my tbi injectors not spraying?

On a TBI, most common reason for no fuel spray from the injectors – although there is proper fuel pressure – is a bad ignition module. They can (and do) fail in a way that you can still have spark, but no signal to the PCM to ground the injectors. (Of course, they also fail in a way that won’t allow spark.)

What controls the injectors on a tbi?

With Throttle Body Injection (TBI), one or two injectors mounted in the throttle body spray fuel into the intake manifold. Fuel pressure is created by an electric fuel pump (usually mounted in or near the fuel tank), and the pressure is controlled by a regulator mounted on the throttle body.

Why does my 89 GMC dump too much fuel?

I have a 89 gmc with the 2.5l 4 cylinder and its dumping too much fuel after I put a new injector in it, it’s like the injector is stuck open. what’s causing it? 97 people found this helpful. I got question on 89 s-10 double throttle body and get no fluid to injectors at all what wrong 20 people found this helpful.

What does throttle body dumping lots of fuel mean?

– CarGurus throttle body dumping lots of fuel. 89 4.3 ltr. model 220 TBI dumping waaayyy to much fuel & flooding engine. Could that be the pressure regulator on top. i have a 91 2.8 tbi that was doing that.

How much does a Chevy S-10 throttle body cost?

Rebuilt presre. reg on throt. bdy & replaced plugs,wrs.cap,rotor,ect. then it started poppin’ & pingin’. cometo find out coil was bad too. But I bought the truck for $400.00 & put about $65.00 into it, with oil change,& $25.00 worth of gas.Runs & drives like a champ now. Thanx again for your input. 10 people found this helpful.

What kind of fuel injector does a throttle body have?

The throttle body assembly is equipped with 1 (4-cylinder engines) or 2 (V6 engines) electronic fuel injectors in order to supply fuel to regulate the air/fuel mixture. All fuel injection and ignition functions are regulated by the computer control module, which is sometimes also referred to as the ECM, PCM or VCM.