#5 cylinder is misfiring.... HELP!!!!!

Psycho_outlaw · Dec 14, 2012

So on my drive back home to Minot, I was doing about 80 MPH. The truck started acting weird and check engine light started blinking. Stopped at the nearest auto store to check it out, got a p0305 code and a p0300. Which is the #5 cylinder misfire. What do you think could cause this on an 06 flex fuel with 70k miles?

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4mula1fan · Dec 14, 2012

http://www.titantalk.com/forums/1948534-post2.html

Psycho_outlaw · Dec 15, 2012

Thanks for the help! I hope its as easy as changing plugs

Psycho_outlaw · Dec 23, 2012

So i am finally going to get around to fix the T. I have a #5 cylinder misfire. My question is, where is each spark plug position? I tried to find a diagram through google but no luck.

baseballfanz · Dec 23, 2012

Psycho_outlaw said:
So i am finally going to get around to fix the T. I have a #5 cylinder misfire. My question is, where is each spark plug position? I tried to find a diagram through google but no luck.

Here you go

Posted from my Titan.

Psycho_outlaw · Dec 23, 2012

baseballfanz said:
Here you go
View attachment 151876

Posted from my Titan.

thanks man

Walrus · Dec 23, 2012

I would make sure the connector plugs are tight on the coil pack first.
Next would be to remove the coil pack and the spark plug and see what the electrode on the plug looks like.
You can move the col pack from #5 to #3 and if the miss moves to #3, you have a bad coil pack.

The engine hasn't been wet has it? Water will cause coil packs to do strange things.

Psycho_outlaw · Dec 23, 2012

Walrus said:
I would make sure the connector plugs are tight on the coil pack first.
Next would be to remove the coil pack and the spark plug and see what the electrode on the plug looks like.
You can move the col pack from #5 to #3 and if the miss moves to #3, you have a bad coil pack.

The engine hasn't been wet has it? Water will cause coil packs to do strange things.

nope no water that I can remember.

nightowl · Dec 23, 2012

What walrus said ^^ Nissan didnt get too happy with the di-electric grease either with the connections. I went through and re greased all my electrical connections I could find.

Psycho_outlaw · Dec 23, 2012

Well swapped coil packs and misfire stayed put....bought some new plugs hopefully that will work

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Walrus · Dec 23, 2012

Pull #5 plug first and check condition.

70,000 is a little young for plug failure but is is not unheard of.

snorkel · Dec 23, 2012

how long did you drive it after swapping the coil packs?

Psycho_outlaw · Dec 23, 2012

snorkel said:
how long did you drive it after swapping the coil packs?

2 or 3 miles

Psycho_outlaw · Dec 23, 2012

So changed the plugs...still running like doodoo......but plugs didn't look to good either but not horrible

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sudden urge · Dec 23, 2012

Has to be a bad fuel injector.

Psycho_outlaw · Dec 23, 2012

Here's my number 5 plug....they all looked about the same

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snorkel · Dec 24, 2012

p0300 and p0305 probable cause(s) ignition system fault, fuel system fault, large vacuum leak, maf sensor fault, AF/HO2S sensor fault or engine mechanical condition this is according to wellsve.com I hope this will help

Psycho_outlaw · Dec 24, 2012

SO my next option is to change the Fuel injector. I googled this task and it said in ordered to get access to the fuel injector I must remove the air intake. Is there another way?

How to replace fuel injectors on a 2005 nissan titan? - JustAnswer

Luke · Dec 29, 2012

I'm throwing the same code as you, P0300, but no other code just the engine misfire detected, which leaves a plethora of issues it could be. I have the updated IPDM board but swapped ECM and fog light relay just to make sure and problem still exists. Heard a vacuum leak today after shutting it off. My next step will be to search for a leak tomorrow during daylight hours.

Psycho_outlaw · Dec 30, 2012

I was hoping mine was going to be a simple fix. I still have not got around to fixing mine, since my garage sits at around 0 degrees. Sucks to try and work out there for long periods of time. but since I have 3 vehicles its not a huge deal just yet. but I do miss my baby.

#5 cylinder is misfiring.... HELP!!!!!

Psycho_outlaw

4mula1fan

Psycho_outlaw

Psycho_outlaw

baseballfanz

Psycho_outlaw

Walrus

Psycho_outlaw

nightowl

Psycho_outlaw

Walrus

snorkel

Psycho_outlaw

Psycho_outlaw

sudden urge

Psycho_outlaw

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