Question about 1994 GMC Suburban

1 Answer

Truck will start intermentitly...this just started. It would not turn over so I put fuel directly into the the Carb (its a throttle body) and it started right up and ran fine. Is this an injector or electric issue?

Posted by on

  • Richard Scordino May 11, 2010

    You need to look at the fuel pump and filter first.

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

  • Contributor
  • 4 Answers

Could be fuel lock or bad fuel pump on the fuel line there is a bleeder line push down on this to see if there is fuel in the line watch your eys to could get you if there is enough pressure also if it would not turn over check all lines to battery sounds like you have a bad line or just loose

Posted on May 15, 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 have a 1993 chevrolet cayenne truck it's getting fuel to carb but won't start it will start and run when I pour gas in carb could it be the injectors


they don't have carbs its a throttle body and if you put gas to make it run it has a bad fuel pump beat on the tank while cranking mite make it start work but will need to be replaced

Feb 23, 2015 | Chevrolet Cars & Trucks

2 Answers

Will not start


Will it start and or run with a shot of carb spray down the throttle body?

can you hear the fuel pump running?

have you checked to see if there is fuel pressure?

Apr 18, 2014 | 1990 GMC Suburban

1 Answer

Truck won't start unless I add fuel to the carburetor (fuel injected) and there is lots of fuel pressure at the rail but nothing going into the carb. Any idea


From your vid, it looks like you don't have a dedicated EFI system.(electronic fuel ignition) You have what's called a throttle body system. It is a Frankenstein(hybrid) between carburetor/fuel injector system. Most commonly with these trucks, and I love to work on them, there will be a fuel filter located somewhere between the tester, and the throttle body. there could be more than 1 if you aren't the original owner of the truck, someone else could have stacked a couple in line. If that is not the case, it could also be a vacume issue. Good luck.

Mar 29, 2013 | Cars & Trucks

1 Answer

1989 Ford f150 4x4 6cl When I go to start the truck it will start then I must keep pumping the gas peddle to keep it running if I let off it will die. Even when it is running it runs very rough


Check your fuel pressure to seeif it is high enough. Possible fuel pump or filter which some of those trucks could have up to three fuel pumps, one in each gas tank and a pump along the frame also. Could also be a vacuum leak or a suction leak at the intake or throttle body. Another possibility could be throttle positioning sensor. An easy way to check for a fuel related problem is to lightly spray carb cleaner onto throttle body while trying to start and see if it will continue running on that. If it does then you have a fuel problem. Use carb cleaner safe for fuel injection systems.

Sep 12, 2011 | 1989 Ford F 150

1 Answer

I have a 1992 Chevy 1/2 ton 5.7 Litre 1500 series truck. The truck while idling suddenly stalled. I verified the fuel pump by taking the pump side off to the filter and verified fuel to the filter by...


Doesn't sound like you've considered spark. Sounds like you're losing spark somehow. You seem to know your way around a truck, so I don't have to explain every little thing. Just check all the ignition stuff, go through the distributor and coil and plugs and wires. If it's gettin fuel, its either a spark issue or air/vaccum issue. Hope this helps.

Jun 12, 2011 | 1992 Chevrolet K1500

2 Answers

I turn the key and it just turns over but wont try to start. ive replaced the fuel pump the fuel pump relay. its geting fire cause i can see a ark on 1 of the plug wires. ive poured fuel directly into the...


a 1997 c1500 doesnt have a carb it is fuel injected, you poured fuel into the throttle body. when you turn the key to the start position and you do not hear the fuel pump you could have a blown fuse. if not, all chevys have passlock a passive antitheft system that have locked the fuel system down. check some remote start companies on the internet you will find one with a wiring diagram, you can figure out the rest from there. its eas

help from the BIG BRAIN

Dec 26, 2010 | 1997 Chevrolet C1500

2 Answers

Wont start


simpler that exposing the throttle body just depress the accelerator 3/4 and try to start.

If like before, the vehicle starts... watch the rear view mirror for black smoke

both indicates a leaking injector(s)

Mar 16, 2010 | 1998 GMC Sierra

1 Answer

Fuel is not passing through


Check the fuel regulator in the carb/throttle body & check voltage of your injectors

Jan 15, 2010 | 1993 GMC Jimmy

1 Answer

I have an 1989 chevy pick up truck. The truck has an rebult 350 engine. The engine runs good and strong, but when you put the gas pedal down pretty far and fast the truck starts running very rough. ...


It sounds like you may have a bad fuel pressure regulator. The fuel pressure regulator is in the throttle body housing and the throttle body in your truck works best at 13psi to 15psi, Any other setting will cause problems. Check the vacuum hose to the fuel pressure regulator at the throttle body and check the fuel pressure at the shredder valve. The way the throttle body works is for the first 75% of the throttle, the ecm uses the signal form the O2 sensors to control the air fuel ratio and tries to keep it to 14.7:1 but at full throttle it by pass the O2 sensor signal and runs the engine richer and advances the timing so you can drive with wings like red bull. The Map sensor then takes over to promote the engine to run richer so you don't run lean and detonation occurs. If there is a problem with your throttle body position sensor, map sensor. and fuel pressure regulator, then at WOT (skinny peddle down) you may be running to rich. The other thing to is if your fuel pressure drops at WOT you'll get a lean condition and then you'll have detonation ( Knocking) and the timing will be turned down to keep detonation from occurring again and that may be the cause if your check engine light too. First and easiest thing to do is change the fuel filter and add fuel injector cleaner to you gas tank, buy a throttle body cleaner and clean your throttle body to make sure you don't have varnish build up around the throttle body, just follow the instruction on the can. Throttle body cleaner not carb cleaner. Start with that and i hope we don't have to do any more to get your truck running like a rocket. Good luck and keep me posted. Be glad to help. 

Jun 23, 2009 | 1990 Chevrolet K2500

3 Answers

1996 GMC Sierra 1500 truck fuel problem


Have you check the injector relay or maybe a fuse for injectors.

Aug 26, 2008 | 1996 GMC Sierra

Not finding what you are looking for?
1994 GMC Suburban Logo

Related Topics:

75 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

75005 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

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

Answer questions

Manuals & User Guides

Loading...