Question about 1990 Chevrolet C1500

1 Answer

How to replace fuel injectors on 1990 chevy 1500 silverodeo

I want to know how to replace a fuel injector

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 721 Answers

Ok, I'm assuming it's a T.B.I. Make sure the key is OFF!! Remove the air cleaner assembly.Or disconnect the battery altogether to be safe.Open the gas cap. Use a 20mm on the main fuel line to the throttle body ( the biggest line,usually driver's side), just hold that though, don't torque on it. At the same time use a 19mm on the nut going into the fitting you're holding with the 20mm. Crack the nut loose, using the 20mm to keep the larger nut from turning out of the throttle body. Remember, "righty tighty,lefty loosey". Just crack it loose until gas flows, btw you do this step with the engine cold & a rag under what your doing. This releaves the pressure that may be in the line. I just watch my eyes, but you may want goggles or a clear mask,I got 17+ years experience,so use proper caution if this is the first time. Ok,the fun begins, on top of the injector's (should have 2) grip the top of the plug & squeeze the clips ( with fingers!!) & pull off the one you want to replace. Most have 2 Torx screws holding them in. You need to buy a set if you don't have them. They look like a "star" & if they have a *** in the middle of them, then you need a tamper proof Torx set. Remove the ones from said injector(s) & remove the aluminum hold down piece. There's a name for it but I'm keeping this simple. Grab the injector you want to change & twist it from side to side while using upward pulling force. All this should be done by hand, but if neccessary, use pliers,gently to help out. Once it's out reverse the procedure. Be sure to use new o-rings where applicable or available & lube them with a little tranny fluid , oil, but no grease or thick stuff! When you're done re-assembling everything,leave the air cleaner off. Close the gas cap, turn the key on,don't start it yet, & look for leaks. No leaks,good to go. Leave the air cleaner off & hood open still & start it up. Re- check for leaks. No leaks then shut it off, put the air cleaner back on & you're done!! Now, keep in mind this system usually has a primary & secondary injector,some have the same on both sides. So make sure that's the problem. In 17 years haven't seen very many bad injectors period. It's usually something else. Hope this helps. Be safe! This is a pressurized fuel system, it will or should spay when you crack that line loose. If it doesn't you have a fuel pump issue or it sat overnight,which is ok. If you have a muti-port injection system,... man that would be so much to type. In that case I would buy a repair guide. That would be the same procedure,but with alot more to do.Good luck!

Posted on Jun 18, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I own a 1990 Chevy Lumina APV 3.1, was leaving for an interview. Suddenly my gas peddle was useless. checked for fuel in tank, made sure spark was there an timing was firing, listened for fuel pump, &...


if it's a trottle body with two injectors.remove fuel pressure,Remove the air filter, remove connector from injector,remove the center pin that hold the air filter case.than remove the top injector from tbi,than pry the injector out,

Aug 02, 2013 | 1990 Chevrolet Lumina APV

1 Answer

1990 chevy 1500. starts, runs, when warm it floods, fuel injectors, how can i keep the choke open


If you have a choke on a 1990 1500 ,something is really wrong.I have never seen a choke on a throttle body.If you don`t have fuel check your fuel pump.

Jan 29, 2013 | 1990 Chevrolet K1500

1 Answer

I have a 1990 Chevy 1500. Have replaced fuel-pump already and it ran great. Now it wont start again. Fuel-pump works, but injectors in throttle-body not injecting fuel. What would cause this?


Leak in fuel line. Put air pressure gauge on rail and crank engine. Should get psi reading. There should be a nipple on fuel rail for testing. If no pressure check for leak

Dec 28, 2012 | Cars & Trucks

1 Answer

My 1990 Chevy s10 pk fuel injector won't work


There should be a fuse for the injector circuit. Did you check that?

Dec 27, 2012 | Chevrolet Blazer Cars & Trucks

1 Answer

Where is the fuel pressure regulator on a Chevy 1500 v6 5 speed


On the top of the engine in the fuel supply rail to the fuel injectors.

Aug 08, 2012 | 1990 Chevrolet C1500

2 Answers

I have a 1990 chevy truck k1500. getting gas to throttle body but not to engine. new fuel pump new fuel filter rebuilt throttle body. do you have any ideas


Throttle body injection? replace the injectors. First check for power to them. 12 volts from one of the wires with key on

Sep 05, 2011 | 1990 Chevrolet K1500

1 Answer

Cutting out stalling have changed ecu, map senor, tps, vaccum hoses, pretty much everything but the fuel pump and injectors 1990 chevy 1500 two wheeel drive


you need to check the fuel pressure when this happens to rule out the fuel pump. What about the ignition module. Have you changed that. If its idling rough you need to ohm the injectors and if possible look at the spray pattern. It should be conical with no dripping or spitting. Both injectors should be about 15 ohms or at least the same plus or minus 2. Get the specs to be sure. Also you may have a weak coil. All these things can cause this problem

May 15, 2010 | 1990 Chevrolet K1500

2 Answers

Had no spark. Replaced ignition mod, 2 coil packs, and computer. I now have fire; problem is engine will not run, the fuel injector sprays fuel (too much i think). When i unplug the injector the engine...


Check for any wiring pinch which might have occurred when the injector was replaced. The injector is driven directly by the computer, so it seems to point at the new computer as being faulty. (pulse signal is always 'on')

Oct 08, 2009 | 1990 Chevrolet Cavalier

2 Answers

I have a problem with my truck starting, chevy 1990 throttle body type 2 top injectors. It takes several cranks to start if it even starts at all without flooding the engine. _ having this problem before I...


I had the same problem with my 1990 chevy 1500 (350) replaced the plugs and wires no luck. I replaced the fuel pressure regulator, still no luck. So i called my mechanic he said it would either be the map sensore or the coolant temp sensor. I didnt figure the coolant temp sensor would cause my truck to flood but it was a 17 dollar part so i gave it a shot, took 10 seconds to switch it out with a 19mil deep socket. Truck fired up and ran like a top no more flooding. =)

Jun 23, 2009 | 1990 Chevrolet C1500

Not finding what you are looking for?
1990 Chevrolet C1500 Logo

789 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

70346 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22041 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6864 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...