Question about 2000 Chevrolet Blazer

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Back fire 2000 chevy blazer 4.3 4wd

My 2000 4wd 4.3 v6 blazer just started to back fire and run really rough. I thought maybe a coil so I got a new one and quickly tried unpluging the old one and plugin in the new one just laying o top of the engine. No change. 160k miles ??

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  • Chevrolet Master
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Back fire can be a number of things. coil pack .spark plugs timing you you get and engine light on when it back fires.... ecu could would need to be read to see what the problem could be.

Posted on Feb 07, 2014

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  • Chevrolet Master
  • 22,246 Answers

Sorry no idea without a plug in of as diagnostic reader ,i would suspect a cam sensor but??? how long is a piece of string??

Posted on Feb 07, 2014

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 1997 chevy truck running rough

Is this a 5.7? They are notorious for intake manifold gasket leaks. When mine did it, the diagnostics blamed it on an ignition misfire also! Replaced the gaskets and it runs smooth!

Posted on Apr 01, 2009

  • 77 Answers

SOURCE: firing order for 97 chevy blazer

Firing order is 1-6-5-4-3-2. Distributor cap should be numbered. Number one cylinder is front on driver's side (3 and 5 follow on same side). Number 2 is front on passenger's side (followed by 4 and 6).

Posted on Apr 29, 2009

  • 20 Answers

SOURCE: Just changed plugs and wires in my 1998 Chevy

Firing order on 3.1L engine is 1-2-3-4-5-6. The ignition system is a waste-spark system, which uses 3 coil packs (1-4) (2-5) (3-6). Make sure that the paired cylinders' plug wires go to the same coil pack.

Posted on Oct 12, 2009

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1 Answer

My 2003 vw passat v6 was recently installed with a new coil pack wires and sparks it ran great for 1000 miles now it runs rough i noticed that the coil has a 1 2 3 6 4 5 sequence when standing...


firing order is 1-4-3-6-2-5.
physical cylinders and corresponding plugs and wires:
6-5-4 drivers side back to front.
3-2-1 pax side back to front.

Jan 23, 2014 | 2000 Volkswagen Jetta TDI

1 Answer

Diagram of fireing oder of 4.3 V6 1996 chevy


Posted by original Asker under 2000 GMC New Sierra 1500 for a 1996 Chevy 4.3L V6

For the 1996 Chevy 4.3L V6:

Firing Order
:
1-6-5-4-3-2

Cylinders:
........(back).......
|..6..|.......|..5..|
|..4..|.......|..3..|
|..2..|.......|..1..|
......(front)

Distributor Connections:
...........(back)
Coil-> o
6-----> o.......o <-----5
4-----> o.......o <-----1
2-----> o.......o <-----3
...........(front)

Let me now if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!

Jun 20, 2010 | 2000 GMC New Sierra 1500

2 Answers

1998 chevy blazer running really rough. It used


I had a similar problem and just happened to unplug the temperature sensor for the computer and the engine started running smooth.
So I replaced the temperature sensor and all was well!

Apr 27, 2010 | 1998 Chevrolet Blazer

1 Answer

Firing order for 1998 chevy blazer 4.3L motor the number 5 is miss firing


For the 1998 Chevy Blazer 4.3L V6:

Firing Order:
1-6-5-4-3-2

Cylinders:
......(back)......
|..6..|.......|..5..|
|..4..|.......|..3..|
|..2..|.......|..1..|
......(front)

Distributor Connections:
...........(back)
Coil-> o
6-----> o.......o <-----5
4-----> o.......o <-----1
2-----> o.......o <-----3
...........(front)

Let me now if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!

Apr 15, 2010 | 1998 Chevrolet Blazer

1 Answer

Blazer wont start


You are getting good spark to the plugs? Have to assume you retimed it after you changed the rotor and cap. Wires are good?

Could be the ignition module, but they usually are either good or bad and not itermittent(sp)...

If it trying but just not 'catching'.. seems like a timing issue, or possibly the coil (although coils tend to be good or bad as well)

Mar 06, 2010 | 2000 Chevrolet Blazer

3 Answers

Replaced distribitor and rotor now wont start on 91 chevy blazer


make sure u have the wires in the correct spots, there is a firing order, u need to have them in the right spots or else it wont fire, call ur local parts store and they will give u the firing order

Jun 27, 2009 | 1989 Chevrolet S-10 Blazer

1 Answer

2000 Chevy Blazer Cranks but wont start...


What about the fuel filter????? Have you changed it out??? If you can spary something like a started fluid, that means it is a fuel problem. My last check, it has to be above 50-psi on the fuel pressure to make it run right. I had 35psi, but whould not get over 30mph or down hill maybe 45mph. Check both filter & pressure, but check pressure with a New fule filter!!!!

Jan 18, 2009 | 2000 Chevrolet Blazer

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