What is the firing order for this vehicle?

Tiny
CHEST0722
  • MEMBER
  • 2004 SUZUKI FORENZA
  • 2.0L
  • 4 CYL
  • 2WD
  • 200,000 MILES
Backfiring, bad pick up.
Saturday, May 14th, 2022 AT 9:52 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,867 POSTS
Hi,

If you look at pic 1, it provides the firing order. Pic 2 shows the cylinder orientation.

If you haven't worked on the ignition system, the firing order shouldn't have changed. Oftentimes, a backfire is caused by either a lean or rich fuel mixture. Do you notice any black smoke from the exhaust?

Take a look through this link and let me know if it is helpful in any way:

https://www.2carpros.com/articles/engine-backfires-while-running

Also, do you know if the timing belt has been serviced in the past?

Let me know.

Joe

See pics below.
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Saturday, May 14th, 2022 AT 10:15 PM
Tiny
CHEST0722
  • MEMBER
  • 5 POSTS
I need the firing order please. The plugs were put on by the length of the wire for 2004 Suzuki Forenza. If got throttle body going crazy. Please give me the firing order only.
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Sunday, May 15th, 2022 AT 5:22 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,296 POSTS
It should have numbers on the ignition coil to match up to the firing order, here is a diagram for you to look at the number should be in this area. Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.
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Monday, May 16th, 2022 AT 1:27 PM
Tiny
CHEST0722
  • MEMBER
  • 5 POSTS
  • 2004 SUZUKI FORENZA
  • 2.0L
  • 4 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
Need firing order, the wire was put on using the length of the wire, mistake. What is the firing order? The throttle is going crazy.
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Monday, May 16th, 2022 AT 5:27 PM (Merged)
Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

The firing order for this engine is 1-3-4-2.
The number 1 cylinder is the one on the left side (if you are facing the engine).

See diagram below for reference.

Let me know of any questions.

Thank you.
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Monday, May 16th, 2022 AT 5:27 PM (Merged)

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