Question about 1999 Chevrolet Silverado 1500

3 Answers

Hard to start chevy 350 vortec

Chevy 3500 359 vortec hard to start once it starts it runs fine starts fine. If it sits 12 hours it is hard to start

Posted by on

  • 3 more comments 
  • Anonymous Apr 18, 2009

    MY TRUCK RUN FINE BUT REAL HARD TO START .TO GET IT RUNNING I HAVE TO USE START FLUID . AFTER IT IS STARTED I CAN TURN IT OFF AND IT WILL START RIGHT UP AGAIN, BUT I CAN WAIT 5 MINS. AND THEN TRY TO START IT AGAIN AND IT WONT START AGAIN.

  • Anonymous Apr 29, 2009

    My 1996 C2500 is doing the same thing. It's like it looses its prime after a while. Once you get it started it's ok. I did change the fuel filter a while back and it was full of rust and ****. That must have come from the boost pump. I am sure that is what I need to do. A new pump as I suspected. I'll try to remember to post after I replace the pump.

  • Ralph Reeves
    Ralph Reeves Aug 04, 2012

    sound s like yhe injectors or the regulator is leakingdown

  • Anonymous Mar 26, 2014

    My 96 Vortec 350 cranks fine for a few rotations, seems like it is ready to start, then stops suddenly. It used to be if I kept trying, it would eventually start, then run fine. Now it just won't fire up at all. A guy at the oil change place mentioned "crank stop." Any suggestions?

  • Anonymous Mar 31, 2014

    chevy 1999 suburban tps adjusiible

×

3 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Chevrolet Master
  • 70,374 Answers

You will need to do a fuel pump pressure leak-down test, the pump must not loose more than 5 PSI overnight, u will need a cheap fuel pressure test guage, the test port is on the fuel supply rail to the injectors on the intake manifold, it looks like a tire valve but metal with a plastic cap on it, u may be able to borrow this guage from Kragen, Autozone or a parts store like them, if not they are very cheap, less than $20 US. Run the engine with the test guage hooked up, turn off the engine and then check it in an hour or so, if it drops more than 5 PSI then u will need to replace the fuel pump in the gas tank. One note make sure the connection for the guage is tight with no leakage or the test is invalid

Posted on Jan 16, 2009

  • Ralph Reeves
    Ralph Reeves Aug 04, 2012

    i did and it worked!!!!

×

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

When I go to start my 97 z71 with 350, sometimes it won't start, it acts like the timing is to far advanced, it cranks but the engine acts like it comes up on to much compresion or is firing to soon just like the old engines when you had the timing to far advanced, could it be the crank senser?

Posted on Mar 13, 2011

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 6 Answers

Change your rotor button they go bad quick on vortec motor s and cause you think its feul or fire proublems

Posted on Aug 04, 2012

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:

2 Answers

When I try to start my 1999 Chevy Tahoe 350 vortec I here the fuel pump run but it only starts and runs while spraying starting fluid?


Your best bet is to get a fuel pressure gauge and see if you have the required pressure at the test port.

Nov 27, 2014 | 1999 Chevrolet Silverado 1500

3 Answers

1990 chevy silverado 1500 single cab. 180K miles. Last few days if the truck sits for 8 hours truck has a hard time starting up. Takes a good push on the gas to get running. Oil changes and fuel...


yes sounds like the fuel filter is clogged when push gas pedal put it in clear flood mood and resets the fuel system and starts over thats why it starts when push to floor creates back pressure sucks debri bottom of filter

Sep 25, 2010 | 1990 Chevrolet K1500

1 Answer

I have 1998 chevy silverdao z71 4x4 350 vortec motor it runs fine when started but it has been hard to get started when it does run it ok but falls on its face when i get on it i have replaced timing chain...


Get a fuel regulator test done. I have same truck. Had same problem. 1 place told me my trans was bad. Another told me cataltic convertor was bad and that the fuel was coming ok when truck was started but when the gas peddle was down the amount of gas per second went down. Fuel pump is your answer. I changed the fuel pump,fuel filter and nothing else and she drives fine now.i hope this helps. My girl friends saturn was doing the same thing. Fuel pump and fuel filter, runs a heck of allot better now.

Jul 26, 2010 | 1998 Chevrolet K1500

1 Answer

Vortec 350 knock on start-up.


Is it a ping or a knock? It could be the initial timing is not set correctly. Are you losing coolant? It could be a leaking head gasket and is leaking a small amount of anti-freeze into one of the cylinders. If it is a bearing it will get worse and worse, is the oil pressure good? I guess I'd take it back to the rebuilder.

Mar 27, 2010 | 1998 Chevrolet K1500

1 Answer

I have a 1993 chevy blazer 4.3. We replaced the fuel filter and fuel pump. When I start it up it starts okay. Once I drive it and let it sit for about 30 minutes or so it takes a couple of times before it...


Is it a vortec engine if it is your fuel injector may be the problem. Chevy ran one injector on the vortech engine it is under the upper intake manifold, it has 6 plastic hoses running to each cylinder under the manifold. if one of these hoses are leaking its dumping raw fuel into the manifold during hot soak. that fuel is getting picked up by intake air when trying to start. and flooding it out hence hard to start. gasoline evaporates rather quick so what fuel was in the manifold when you park for the night has evaporated by the next morning so no raw fuel for intake air to pick up easy start. Seen this problem many times. pretty easy fix but a bit pricey around $200

Oct 17, 2009 | 1993 Chevrolet S-10 Blazer

1 Answer

1999 chevy vortec 350 sound like a weak battery when starting


HAVE THE BATTERY TESTED BEFORE U DO ANYTHING FURTHER WITH ANY INJECTOR RELATED FIXES, IT MAY HAVE A SHORTED CELL, THIS CAUSES THE BATTERY TO RUN LOW OVERNIGHT, DON'T ASSUME THE BATTERY IS GOOD EVER, I HAVE REPLACED 4 BATTERIES ONCE IN LESS THAN 5 MONTHS, ALL DUE TO SHORTED CELLS. KRAGEN OR AUROZONE WILL TEST THE BATTERY FOR FREE

Feb 18, 2009 | 1986 Toyota Land Cruiser

3 Answers

1998 Chevy tahoe Hard to start when cold


replace your MAP sensor(manifold absolute pressure) the map sensor is the computer for your fuel pressure regulator telling how much pressure. Unless your tahoe runs like **** going up hill than it inevitably your fuel pump

Feb 17, 2009 | 1999 Chevrolet C/K 2500

2 Answers

I need the torque specs and sequence on a 1998 chevy 350 vortec


Vortecs are a little different that old school small blocks, grab a Haynes or Chiltons, the cross patterns and specs are simply diagramed. Vortec, as any really, start with 25# then 45# and then final torque which I believe is around 70-75# but to be sure verify with the manual. AutoZones, Murry's, Adavance auto all carry the books, Cheap insurance.
Dan

Nov 19, 2008 | 1998 Chevrolet C2500

Not finding what you are looking for?
1999 Chevrolet Silverado 1500 Logo

2,610 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

70374 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22041 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6878 Answers

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

Answer questions

Manuals & User Guides

Loading...