Question about 1997 GMC Jimmy

2 Answers

I was told that my two middle cylinders are missfiring, why would this be?

Posted by on

  • Jerry May 11, 2010

    There are a few reasons why cylinders can start misfiring.

    1) Lack of spark. This could be attributed to bad cables, bad spark plugs, fouled spark plugs.

    2) O-ring around the piston worn.



    Is there any black smoke coming out of the exhaust?

    Is your engine sluggish? Does it hesitate when you press down on the gas pedal?



    The easiest way to check if you are getting spark on those cylinders that are misfiring is to pull out the spark plug and leave it connected to the spark plug cable, you can do this one by one. There's no fear of harming your vehicle, just ensure nothing falls into the open spark plug hole while you're performing this test. I hope this gives you a starting point.



    Best of Luck!

×

Ad

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

    Governor:

    An expert whose answer got voted for 20 times.

  • Expert
  • 150 Answers

Chances are the coil that controls those two cylinders is at fault and would be a good starting point

Posted on Apr 23, 2009

Ad
  • Level 1:

    An expert who has achieved level 1.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 5 Answers

Your rings could be bad in the piston or your cylinder wall is worn.

Posted on Apr 23, 2009

Ad

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

Misfire cylinder 3


What is compression on cylinders?

Jun 26, 2014 | 2006 Skoda Fabia 1.2

1 Answer

Missfire on cylinder 8 on bmw 545


move the ignition coil to another cylinder and see if the miss fire moves. If so replace that ignition coil. If the miss fire stays on that cylinder it is more likely the fuel injector. Was their carbon on the spark plugs when you removed them? This is indicative that the fuel injector is gummed up.

Jan 18, 2013 | Cars & Trucks

1 Answer

Missfire cylinder 8 545


Move the ignition coil to another cylinder and see if the problem moves. If it does it is the ignition coil replace it otherwise it is probably the fuel injector.

Jan 18, 2013 | BMW Cars & Trucks

1 Answer

Last week have 3 missfire codes(305), wonder if it could be the weather?


code 305 for v-6 is in cylinder #5 You may have a crack in that coil pack getting moisture in it or a bad plug or plug wire. book says that is the middle cylinder front of car on a front wheel drive.

Feb 22, 2011 | Ford Escape Cars & Trucks

2 Answers

I NEED A FIRING ORDER DIAGRAM FOR A 3.5 KIA SEDONA I HAVE TROUBLE CODES 302 AND 306 AFTER COILS,PLUGS AND WIRES WERE REPLACED


Firing order 1.2.3.4.5.6
Looking at engine , number 1 cyl left front,number 2 left middle,3 left back
Number 4 right front,5 middle right ,6 back right
Fault codes indicate missfire cylinder 2 and 6

Jul 27, 2010 | 2004 Kia Sedona

2 Answers

Check engine light flashing runs rough not firing on all cylinder2000 lincoln navigator with large triton engine Hooked up diagnnostic and it said 1. system too lean bank #2 2. Unable to bleed up fuel tank...


you may try your rotor button and distributor cap. and spark plug wires. try your map sensor also they tend to cause a lot of misfiring if they go bad.hope this helps.

Apr 20, 2010 | Lincoln Navigator Cars & Trucks

1 Answer

Cylinder 2 missfire detected


Get a Compression tester.Its easy to do. Remove the plug and screw this in to the spark plug hole and disable the ignition system by pulling the ECM fuse. Crank the engine for 5 seconds and stop. Check the gauge. It should show 150 psi or close to it. If it shows under that check some of the other cylinders and see if they read the same thing. If they give a better reading then you could have a bent valve, a blown head gasket or broken rings or even a hole in the piston. If your unsure then take it to a shop and have them run a compression test on it for you. And make sure you stay in the shop while they do it and see the reading for yourself.

Jul 12, 2009 | 1997 Isuzu Trooper

1 Answer

1998 honda civic cel code 71-74


code 71 means #1 cylinder missfire 72 Means #2 cylinder missfire 73 means #3 cylinder missfire and 74 means #4 cylinder Missfire

May 29, 2009 | 1998 Honda Civic

2 Answers

2002 ford escape xlt eng codes po302 ?????


Zeevert was right about all but one thing. Cylinder two is the rear middle cylinder on a V6 or the second one from the passenger side on a 4 cylinder.

May 16, 2009 | 2002 Ford Escape

Not finding what you are looking for?
1997 GMC Jimmy Logo

Related Topics:

38 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

76846 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

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

Answer questions

Manuals & User Guides

Loading...