Question about 2003 Chevrolet Silverado 1500

1 Answer

My truck backfires occasionally and misfires.

My 2003 1500 cheny v-6 4.3l backfires occasionally and misfires. repaced the ignition coil and plug/wires/rotor/cap. all sensors are replaced. what is causing the backfire?

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.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 7,353 Answers

Check fuel pressure. When does it backifre, Idle? on accel? cruise? all the time? sometimes? help us help you.

Posted on May 13, 2010

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

Car idles roughly.


-There are couple thing cause misfired:

-Bad Plug or plug wire.
-Fuel injector.
-Bas ignition coil.

Good luck


mai

Jun 08, 2015 | 2006 Saturn ION

1 Answer

Engine died while driving, no spark, replaced coil, now starts, idles, runs well at low rpm, but misfires when accelerating. No check engine costs thrown. What should I check next.


Change your ignition module. The distributor is a weak point of the Honda, I will always change out the whole thing than just try the coil.

Jun 05, 2015 | 1996 Honda Civic

2 Answers

Backfires in intake manifold


It could be misfire are you getting a loud noishttps://www.youtube.com/watch?v=SZPiD7nv9Bwe from engine and there can be many things related to the misfire
1) Short Coil
2) Improper spark plug gap
3) Carbon deposit on the spark plug
4) Wiring issue ( coupler )
If you are sure it is related to coil then check the wiring voltage with a multimeter and make sure than wiring it ok. There is simple method to test which ignition coil i not working , I am sharing a video for that. Once you are sure which one is not working then replace it.

Good Luck

Apr 03, 2015 | Cars & Trucks

1 Answer

Truck is backfiring and missfiring.


Have the misfire diagnosed and the backfiring will be fixed also. The backfiring is caused by the "over-rich" fuel mixture in the exhaust stream and is igniting within the exhaust. Fix the misfire (which will cause the rich condition) and the backfire will be gone.

Mar 24, 2014 | 1994 GMC Sierra

1 Answer

While cranking loud backfire than i restart engine again than it cranks than starts up,this happend about 6 times during 3 months. Car did same thing yesterday, but it just cranks won't start 98 olds...


Not sure if you have a 1996 Cadillac Seville or a 1998 Olds Aurora but I would check the Ignition Coil Packs. One or more of them may need to be replaced. Also if you were working on the car and got the wires plugged onto the wrong coils then the firing order sequence would not be correct and this can cause a misfire or backfire conditon.

Ignition wires cannot rest near the primary wire harness of the ignition module, which can cause electrical interference and a no start condition or a misfire condition

On my friends 1997 Cadillac Seville it was easy to replace all 4 coil packs took less than 30 minutes and made the car run much better. Just make sure to get the firing order right. If necessary find a diagram of the correct firing order for you vehicle.

A good place for mail order auto parts is rockauto.com

I have pasted a picture below of what an ignition coil pack looks like




octech4hire_0.jpg

Jan 02, 2011 | 1996 Cadillac Seville CA Value

1 Answer

Getting a intermittant misfire and an occasional srvc eng soon light sthe code says misfire cyl 1 but after i reset the light i goes back to intermittant missing


Check your ignition coils. If you don't have a coil for each plug then I'd bet thats going to be your problem. That or your spark plugs. I'd start with the coil that cylinder 1 runs through first though.

Nov 14, 2010 | 2001 Ford Mustang

1 Answer

Misfiring after replaceing starter


check clamps where heater hoses go to firewall there was an issue with coolant leaking onto ignition components causing misfiring

Jul 23, 2009 | Ford F-150 Cars & Trucks

Not finding what you are looking for?
Cars & Trucks Logo

305 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

75077 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7768 Answers

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

Answer questions

Manuals & User Guides

Loading...