Question about 1996 Chevrolet C1500

3 Answers

1996 chevy 1500 pickup 4.3L vortec.v6 .wont start on its own needs starting fluid when i get it to run have to constantly give it gas till it runs on its own. Heard it was an oil pressure sending unit that could be the problem. any advice will help. where is the osu located and could that be the problem. truck used to just need starting fluid now its getting worse and wont stay running until i give it a bunch of gas till the rpms ketch up.

Posted by on

  • 1 more comment 
  • austinkier Apr 18, 2009

    yea ill gonna try dry gas but i think it would still run if it had watered down gas so im gonna try fuel filter first, then oil pressure switch OSU see what happens after that. gonna work on it tomorrow

  • austinkier Apr 18, 2009

    alright i will

  • austinkier Apr 20, 2009

    Replaced the fuel filter it did need it badly considering the old one was rusted to the lines, but didnt fix the prob. Also replaced the (OSU) oil sensing unit and that didnt fix the prob either. But it will run if i put starting fluid in it i just think the oil pump is slow at start or the fuel pump isnt pumping enough pressure to get it to start.



3 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 3 Answers

I had a problem with fuel pressure due to a bad ground ******** the back of the engine block. This ground connects the battery to the frame through the engine block. The fuel pump is grounded to frame near the gas tank so it needs this ground strap. I live in NY where the salt corrodes the strap in about 10 years.

Posted on Oct 04, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Underneath the "carberator" is a set of lines that looks like a spider they are made of plastic and have probably got holes in them from old father time change those out and you might get a good running truck ...thats what happened to mine same truck same year and same motor....good luck

Posted on Sep 30, 2009

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert that has over 500 points.


    An expert who has answered 200 questions.

  • Expert
  • 255 Answers

Sounds like water in the fuel

Posted on Apr 18, 2009

  • james shack Apr 18, 2009

    let me know what happens. if you dont mind.

  • james shack Apr 20, 2009

    ck fuel line pressure at schrader valve on the ful rail top of motor


1 Suggested Answer

  • 2 Answers

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

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.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Wont start

Did you mean starting fluid or a full tank of gas ?
V6 vortec engines require 60psi of fuel pressure or more to run.
You may need to check the fuel pressure with a gauge.

Aug 25, 2012 | 1997 GMC Jimmy

2 Answers

1996 GMC Jimmy will start but wont idle

change the trottle position sensor

Jul 18, 2012 | 1996 GMC Jimmy

1 Answer

V6 4.3l starting problem wont run

If it is a Vortec V-6 they take at least 60psi to start and run.
The dealer will know what your min pressure should be.

Jun 29, 2012 | 2000 Chevrolet Silverado 1500

2 Answers

2000 chevy silverado v6 vortec engine, died driving, changed fuel pump, plugs wires, etc. and still wont start. ever heard of that

1st, check to see if the fuel pump runs for 3 seconds when you turn the key to run (not start). If it doesn't run, then check the fuel pump fuse & relay in fuse box under hood, if OK, (spray starting fluid in the intake to see if engine fires at all), if no fire then look towards the ignition as the problem. There are 5 things need to start an engine: 1. fuel (delivered & pressure), 2. air, 3. spark (distributor/ignition module or pickup coil), 4. rotation & timing, 5. compression. any of these that are wrong or not there, the engine fails.

Sep 20, 2011 | 1999 Chevrolet Silverado 1500

1 Answer

After running out of gas in my 1996 vortec v6 4.3L it has spark and has plenty of gas going to the motor but wont start at all

If it has spark and should start ??? make sure that the gas you put in has NO water in it ??

Jun 26, 2011 | Chevrolet 1500 Cars & Trucks

1 Answer

I have a 98 s-10 it wont start it has 40 to 45 pounds of pressure & its firing getting gas but wont run i pulled the fuel pump relay n it try to run i sprayed it with start fluid it hits but if i put...

If this truck has the 4.3L vortec motor it will not start with 40-45 PSI fuel Pressure.Thius engine requires approx. 56 PSI fuel pressure or it will not start. The fuel pump more than likely needs to be replaced this is a common problem with the 4.3L vortec engine.Change the fuel pump and your problems will be solved.

Apr 26, 2011 | 1998 Chevrolet S-10 Pickup

1 Answer


the only way to tell for sure is to have the engine anylized with a real time scanner, it could be a sensor or actuator that is not throwing a code so a scan for codes will not help, if all seems to be od start looking for vacuum leaks, air bubbles in the fuel, fuel pressure constant, etc

Apr 19, 2011 | 1996 Chevrolet K1500

1 Answer

Takes at least 3 tries to start

check under the hood for vacuum leaks this could cause both the heater and the running problem

your flap is controled by engine vacuum and if there is a hose off under the hood you may fix both problems

Sep 28, 2008 | 1996 Chevrolet S-10 Pickup

Not finding what you are looking for?
1996 Chevrolet C1500 Logo

2,230 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

76649 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8522 Answers

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

Answer questions

Manuals & User Guides