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Cylinder #3 misfire infiniti i30 2001. I need the diagram please.

Posted by Anonymous on


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Posted on Jan 02, 2017

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SOURCE: misfire in cylinder 3

I recently had that (po303) misfire in cyl. 3 on my 2002 Mazda MPV LX with the 6cyl. 3.0 ford duratec engine (the only engine installed that year). 75k miles. The engine was studdering while at idle and upon accelleration. It was worse when the AC was on. The check engine light came on. I went to Advanced Auto Parts. They loaned me a code reading handheld computer. An Actron OBD II. PO303 misfire in cyl.3 was the verdict. I then got on the internet to do some research. Found that the problem could be a number of things. Coil packs and/or wiring harness, spark plugs, egr valve and/or ports, fuel pump or filter, fuel injectors etc. etc.. I decided to try what I thought was the simpilist remedy first. I purchased new spark plugs, retrieved some tools from the garage and opened the hood. Though I've performed all the other routine maintenance items like oil changes, battery maintenance, air filter etc., I never really looked for or noticed the spark plugs or their location. The front bank of 3 plugs was a breeze to change out but the rear bank....well they havn't been changed yet. Not so simple. At that point I decided that since I would have to remove the intake manifold and all the wires,hoses and etc. would have to be unattached, I might as well change the 3 coil packs and recondition the 6 fuel injectors while I had it apart. The cost and hassle of those fixes then lead me back to do what my old school, auto mechanic all his life father, alway told me. "Look at the easy fixes first". Many of us think that since everything nowadays is so complex that the fix must be complex also. Well, I then purchased a bottle of Chevron Techron Fuel Injector Cleaner. So many other brands were on the shelf to choose from. Seafoam, Lucas, Shell, CRC, STP, etc., etc.. Through netsurfing I discovered an old CARTALK Q & A. They kinda gave a halfhearted nod to the Chevron product. It stuck with me so I tried it. Within 10 miles the engine began to run better. The more I drove the better the performance. The Check engine light went off. No more misfire in cyl. 3 and no more code po303.

Posted on Dec 07, 2008

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SOURCE: 2000 CIVIC System too lean Cylinder 3 and 4 misfire Deteced

  1. P0171: This means that the oxygen sensor has detected a lean air-fuel ratio. This can be caused due to a vaccuum leak or a problem in the HO2S circuit or the HO2S (Heated Oxygen Sensor) itself. (Bank one Sensor one). This is commonly located along the exhaust pipe. It could also be a bad Mass Air Flow sensor or a bad Engine Coolant Temperature sensor. Diagnostic checks will be needed to be carried out to be verified though
  2. Well as for the other codes, it means #3&4 cylinders are misfiring. It is a possibility that the P0171 code mite have caused the others to show up. I can be wrong though. But it is a strong possibility. If the air fuel mixtue is too lean indeed, mis-firing will occur, unless it is an actual electronic and not a mechnical problem. By the way, when these codes appear, how is the engine's performance. Does it remain the same or behaves poorly?

Posted on Feb 14, 2009

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I have changed a few cylinder heads under warranty for this type of problem. The exhaust valve guides wear, this causes the exhaust valve to seat badly, giving low compression. if one cylinder compresion reading is more than about 50 psi below the others, then this warrants head removal. It is quite a job, due to the fact that the camshft id chain driven. If you are up for it then once the head is removed, poor liquid into the exhaust ports and see if it leaks out through any of the exhaust valves.

Posted on Jul 23, 2009

  • 17970 Answers

SOURCE: firing order diagram for 2002 tahoe

2002 Chevrolet K Tahoe 4WD 4.8 liter V-8 VIN "V"


2002 Chevrolet K Tahoe 4WD 5.3 liter V-8 VIN "T"


Hope helped with this; remember rated this help. Good luck.

Posted on Dec 04, 2009

  • 1033 Answers

SOURCE: cylinder 2 misfire. Can't locate second cylinder.

1-5-3-6-2-4 is the firing order.

right side is 1-3-5 left is 2-4-6

6 5
4 3
2 1

Posted on Jun 27, 2010

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Have changed all plugs and coil packs but still giting miss in 1 3 5 cil think its a short in wire hornins but cant find a diagram

If you are getting a misfire code on those three cylinders (all on just that one bank of engine!), it's probably not an electrical short, but something else causing misfire. Misfire codes are set when the power output from that cylinder is less than expected: the pcm senses a crankshaft lag in power output and sets the code.

Typically, misfires are caused by weak or missing spark, or by fuel/air mixture problems, or by low cylinder compression. The fact that your misfires are all on one bank (side) of the engine sounds suspiciously like the fuel/air mixture might be wrong for that bank, or the cylinder compression is low on that bank.

You could use a spark tester just to check spark on 1, 3, & 5. Use a calibrated spark tester to compare both banks-all 6 cylinders. I think you will see equal spark at all cylinders. The only shorts would be in the spark plug wires. And not likely all 3 went bad at once, although you could check them, maybe swap a few around and see if the misfire follows the wire.

Start looking for air or vacuum leaks that only affect bank 1. Possibly an intake manifold leak, could also be an exhaust leak, something that affects the air/fuel mixture in the bank 1 cylinders. Also you could do a compression test of the cylinders to make sure bank 1 is good, same compression as in bank 2 (the other side of engine). Just some tips to help you out, good luck.

Feb 20, 2016 | Cars & Trucks

1 Answer

I have problem :misfire cylinder #3 #5 about 3 years millage is 130000 ....thanks

It is possible that you may have two coil packs going bad as cylinders 3 and 5 are on different packs. To attempt to prove this without going broke, you could swap the 1/4 coil pack with one of the other two and see if the misfire changes the 1 or 4 cylinder instead. If it does, you have the issue resolved. See the diagram below for more details.

26001853-2qxw3km0vcnqu3setvnduoab-2-0.jpg If you can't read the coil packs on the right, they are paired from top to bottom as 3/6, 2/5, and 1/4

Dec 10, 2015 | 2005 Kia Sportage 2.7

1 Answer

What does fault code po304 mean and how do I fix it?

P0304 INFINITI - Number 4 Cylinder Misfire Detected

Possible causes- Faulty spark plug 4
- Faulty ignition coil 4
- Ignition coil 4 harness is open or shorted
- Ignition coil 4 poor electrical connection
- Clogged or faulty fuel injector 4
- Injector 4 harness is open or shorted
- Injector 4 poor electrical connection
- Improper spark plug 4
- Insufficient cylinder 4 compression
- Incorrect fuel pressure
- Intake air leak

Jun 25, 2012 | Infiniti J30 Cars & Trucks

1 Answer

Horrible Random misfire in car

This is common issue with Infiniti I30 1999-2001.

When the coil packs fail they burn up components/parts on the engine computer ECU. If the problem gets worse, you will need to replace the ECU or have it rebuilt.

Is your check engine light on?
You might also get code P0505
Technical bulletin also recommends to replace
The Idle Air Control Valve MUST be replaced prior to re-installation of the ECM, or immediate damage to the computer will occur again.
Common Failures:
  • No Start, Hard Start, Engine Stalls
  • Rough Idle, High Idle, or Idle Up and Down
  • Misfire to one or more cylinders
  • No signal to the ignition coils
  • Engine Trouble Codes For Idle Control Valve (IACV)
  • No Communication With Computer
  • Replacing IAC Does Not Fix The Problem

Jul 24, 2017 | Infiniti Cars & Trucks

1 Answer

Have 95 model Mazda e2000 econovan stalls idles set to low also on highway going up hills feels like runs on 3 cylinders and then goes back to normal and fitted a thermostat in it today no leaks just not...

Did the vehicle overheat?Feels like it runs on 3 cylinder this is a misfire underload, you are dealing with a misfire from the wires itself to the cap and rotor and even the sparkplug.

Mar 02, 2012 | 2004 Infiniti I35

2 Answers

Cylinder 2 misfire. Can't locate second cylinder. Need diagram.

1-5-3-6-2-4 is the firing order.

right side is 1-3-5 left is 2-4-6

6 5
4 3
2 1

Jun 27, 2010 | 2004 Suzuki Verona

2 Answers

I need a diagram of the firing order 2003 Mazda MPV.Misfire on cylinder 2.

For the 2003 Mazda MPV 3.0L V6:

Firing Order:


Let me know if this helped.....

May 06, 2010 | 2003 Mazda MPV

2 Answers

Misfire cylinder 3

#1 is at the front, the front is the side with the timing belt. it goes 1234. Lee
please vote if this was helpful or not.

Oct 12, 2009 | 2001 Hyundai Tiburon

2 Answers

P0302 Cylinder 2 Misfire Detected in 2006 f150 STX

Looking at the Engine on a ford is different from a gm. The correct cylinder numbers are 1234 from front to back on the passenger side and 5678 front to back on the driver's side

Apr 13, 2009 | 2002 Ford F150 Regular Cab

1 Answer

Coil pack

Cylinders 2 - 4 - 6 are facing the radiator. Cylinder 2 is closest to the drive belts.

Cylinders 1 - 3 - 5 are facing the firewall, cylinder one closest to the drive belts.

Hope this helps; and Thanks for choosing FixYa for assistance.

Feb 25, 2009 | 1993 Toyota Camry V6

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