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I had a misfire in Cylinder 5. I replaced all 6

I had a misfire in Cylinder 5. I replaced all 6 spark plugs and the coil on the Cylinder number 5. I am continuing to a have a misfire on cylinder 5 and now 3. Do you think a bad or plugger injector would do this? Thanks for any guidance.
Jason

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  • Mazda Master
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Check ur wires or its another coil

Posted on Feb 07, 2010

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2 Answers

Po306code?


Misfire in cylinder #6. Could be bad spark plug, spark plug wire, cop coil, bad intake/exhaust valve, clogged fuel injector or piston/cylinder problem. What's the year, make, model, engine and have you been following the recommended maintenance schedule for new plugs?

Oct 12, 2017 | Cars & Trucks

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Misfired cylinder 6, replaced coil, plug Misfired cylinder 5, replaced coil, plug Misfired unsure which yet, all of these happening within a week. It will run fine for a day or so after rep


change all plugs with proper ones - they are picky for some reason - do not change number or brand from original - coils were probably ok, - get some injector cleaner and run through it but check for exhaust leak at e g r tube - is a common over looked cause of misfire - a thing to keep in mind is misfire isn't always spark issue. hope I was of some help

Apr 20, 2014 | 2003 Lincoln Town Car

1 Answer

Acura mdx 2001 ingine codes p1399 andp300 as well others codes 305


All these codes indicate you have a misfire on cylinder number 5.
P1399/P0300 - Random/Multiple Cylinder Misfire Detected
P0305 - Cylinder #5 Misfire Detected

Causes:
- Improper spark plug at cylinder #5
- Insufficient compression at cylinder #5
- Incorrect fuel pressure
- The injector circuit is open or shorted at cylinder #5
- Fuel injector #5 may be faulty
- Intake air leak at cylinder head

Solutions:
- Perform Injector Service
- Replace Spark Plug #5
- Replace Injector #5
- Replace Ignition Coil #5

Mar 09, 2011 | Acura MDX Cars & Trucks

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2002 ford escape 3.0L DTC P0305and P0306 what would you ck


P0305 - Cylinder 5 Misfire Detected
P0306 - Cylinder 6 Misfire Detected

When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position (CKP) sensor signal to vary, The Powertrain Control Module (PCM) or Electronic Control Module (ECM) can determine that a misfire is occurring.

When is the code detected?
- Engine Cylinder #5 and #6 is Misfiring.

Symptoms:
- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/loss of power
- Hard start
- Engine hesitation

Possible Causes:
- Improper spark plug at cylinder #5 and #6
- Insufficient compression at cylinder #5 and #6
- Incorrect fuel pressure
- The injector circuit is open or shorted at cylinder #5 and #6
- Fuel injector #5 and #6 may be faulty
- Intake air leak at cyli

Possible Solution:
- Perform Injector Service
- Replaced Spark Plug #5 and #6
- Replaced Injector #5 and #6
- Replaced Ignition Coil #5 and #6

Hope helps.

Jan 02, 2011 | Ford Escape Cars & Trucks

1 Answer

Cylinder 5 misfire were is tha cylinder


CYLINDER NUMBER 5 IS STANDING IN FRONT OF VECHICLE IT WILL BE THE 5 CYLINDER COUNTING FRONT TO THE BACK CYLINDERS IS IN ORDER 1 2 3 4 5 6 THAT YOUR CYLINDER ORDER. YOU HAVE A INLINE 6 CYLINDER ENGINE.YOUR MISS FIRE COULD BE THE COIL - SPARK PLUG - CLOGGED OR FAULTY FUEL INJECTOR. ALSO INTAKE MANIFOLD VACUUM LEAK OR SLIGHT HEAD GASKET LEAK WILL CAUSE MISFIRE.

May 06, 2010 | 2002 GMC Envoy

2 Answers

I have a code misfire cylinder 5 and I am not sure where cylinder 5 is on my engine and it runs like **** and when i give it gas Service engine soon light comes on. specs: 2000 v8 8.1 litre gas Vortec 8100...


Cylinder numbering for your engine is 1-3-5-7 on the left hand bank and 2-4-6-8 on the right hand bank (passenger side). To be sure where number 1 is look across the cylinder heads number 1 cylinder is always the head that is furthest ahead towards the front of the vehiclek, then count 3 cylinders back on that side, should be left, and that should be number 5. pull the spark plug first and check it and at the same time pull number 3 's plug and swap the coils from 5 to 3. If the plugs are bad replace them all. Then run the vehicle and see if the misfire code followed the coil to number 3, if it does you know you have a bad coil, they usually run about 90 - 100 bucks each, that is if the plugs or wire wasn't the problem. hope this will help you. good luck.

Apr 08, 2010 | 2000 Chevrolet 3500

3 Answers

Misfire code#306


cylinder #6 is misfiring check plug(if gap incorrect can cause misfire, fouled etc) , coil on plug (or Wires) poss spark plug coil pack (check for cracks and heat damage in insulation of pack)

Oct 20, 2009 | 1996 Ford F150 Regular Cab

2 Answers

What do these trouble codes mean po306 cyclinder misfire detected .how do i fix the problem?


it means you have a misfire on the number 6 cylinder

this could be caused by a whole lot of reasons.

start by inspecting for a bad plug wire if it has them

check for fire on the cylinder with a spark test tool from local part store

if it is a coil-on-plug set-up, check the coil for fire

replace coil/plug wire as needed, replace boot on coil if coil needed, replace spark plugs

Oct 11, 2009 | 1998 Chevrolet Blazer

1 Answer

1999 buick regal codep0305


Cylinder number 5 is misfiring. Check spark plug, spark plug wire and ignition coil for the number 5 cylinder. The number 5 cylinder is the closest to the front of the car on the drivers side. With engine running in dark (at night) take a spray bottle of water and lightly mist spark plug wires and coil and look for arcing. Autozone will test coil for free.

Nov 30, 2008 | 1999 Buick Regal

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