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  #1  
Old 07-02-2009
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CEL still on... need advice.

Hey guys,

P0306... cylinder 6 misfire. This is what I have done so far:

New Plugs
New Wires
New Coilpack
Full Seafoam Treatment
Techron Fuel Injector Treatment
Compression check on Cylinder 6 = 140 = good
Brand new fuel injector in Cylinder 6

Last night while driving after I put the fuel injector in truck ran fine all day. Then while in In'N'Out drive thru, CEL flashes, then goes solid. P0306.

Reset the code and socked my steering wheel a few times.

Is there anything else I can try? Is my computer bad or something? I've pretty much cleaned out my bank account trying to get this CEL to go away. Any help would be greatly appreciated.

Last edited by Prerunner-Ranger; 07-02-2009 at 11:57 AM.
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Old 07-02-2009
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torch the truck and get the insurance money lol
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Old 07-02-2009
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torch the truck and get the insurance money lol
x2. Drive it to Mexico, park it in town with the keys in the ignition and the window down then go have a few drinks.
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Old 07-02-2009
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Quote:
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torch the truck and get the insurance money lol
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x2. Drive it to Mexico, park it in town with the keys in the ignition and the window down then go have a few drinks.
I would if I didn't owe 8 grand.


Can anyone shine some light? rwenzig? earl? beard? shane from boring oregon?
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Old 07-02-2009
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is the misfire still present?
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Old 07-02-2009
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but make sure to take your glass off first
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Old 07-02-2009
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How is the coolant? Maybe you have a small headgasket or intake manifold gasket leak.
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Old 07-02-2009
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is the misfire still present?
Only when that light flashes do I feel the misfire. As long as the light is off it's fine. It goes back and forth and can't make up it's mind, but the misfire is definitely still there.
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Old 07-02-2009
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How is the coolant? Maybe you have a small headgasket or intake manifold gasket leak.
Coolant is perfect. and I just got done taking the whole upper intake manifold off and changing all the seals while replacing the injector.

I hope it's not a head gasket leak, all that **** was supposed to be brand new and reconditioned when I got this dang engine from www.karking.com

blah.
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Old 07-02-2009
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Do the Mexico thing and pay off the truck with the insurance money. Or pray that you get T boned but you end up uninjured. Then buy a new Civic and leave it stock.

Oh and I won't ever deal with KarKing. No thanks.

Last edited by whippersnapper02; 07-02-2009 at 12:25 PM.
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Old 07-02-2009
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i had a misfire from my egr being bad. i wouldnt think thats your problem though. this is weird
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Old 07-02-2009
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do you have an egr?

which cylinder are you calling #6?
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Old 07-02-2009
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Originally Posted by whippersnapper02 View Post
Do the Mexico thing and pay off the truck with the insurance money. Or pray that you get T boned but you end up uninjured. Then buy a new Civic and leave it stock.

Oh and I won't ever deal with KarKing. No thanks.
Honda? are you kidding me?

Quote:
Originally Posted by OVERtheEDGE View Post
i had a misfire from my egr being bad. i wouldnt think thats your problem though. this is weird
Tell me about it bro :(

Quote:
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do you have an egr?

which cylinder are you calling #6?
Driver side, very back rear by firewall. I think I have an EGR but not 100% sure.
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  #14  
Old 07-02-2009
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Google says p0306 is caused by:

* Faulty spark plug or wire - NEW
* Faulty coil (pack) - NEW
* Faulty oxygen sensor(s) - Replaced 6 months ago
* Faulty fuel injector - NEW
* Burned exhaust valve - ?
* Faulty catalytic converter(s) - ?
* Running out of fuel - ....
* Poor compression - Compression is good
* Defective computer - ?
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Old 07-02-2009
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Honda? are you kidding me?
Why not? They will get you from point a to b and they are great cars. Its not like you need a truck.
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  #16  
Old 07-02-2009
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Why not? They will get you from point a to b and they are great cars. Its not like you need a truck.
Yea they are great cars, but not for me. I'd rather get a Subaru.
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Old 07-02-2009
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Yea they are great cars, but not for me. I'd rather get a Subaru.
When you don't have much money you drive what you can not what you want. That's why I have my Ranger. Now that I can drive what I want the Ranger will sold for something that I want.
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  #18  
Old 07-02-2009
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ECM?

Found this on another forum:

whitedevilTA
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Car: 1986 Trans am
Engine: Minirammed 355, TF heads, XR276 cam
Transmission: T5 manual
Axle/Gears: 95 10 bolt, 4.10

Classifieds Rating: (2)

My ECM went bad once on my 86. Car would run perfect and the engine light would be off but as soon as the light came on(and it came on completely randomly) the car would go berserk and idle crappy, hesitate, backfire, you name it. But it only did it once in a while, and the light would sudenly go off and it would run perfect again. You should get a code too telling you the ECM is bad......I did when mine went bad.


Sounds just like my issue.
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  #19  
Old 07-02-2009
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IDK. Like you mentioned PCM, burned valve, which could be possible. Also weak or broken valve spring. I am out of ideas at this point you have replaced almost everything related to fuel and ignition. You could do a cylinder leak down test.
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Old 07-02-2009
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when i had my misfire issue everytime someone else had one it seemed like their peoblem was my problem too. well after replace everything i could thing of i still had the problem, then a friends granfather said pull the vacume hose off the egr and drive home and see if thats the the problem, he said if u pull the line and it runns perfect then thats it and you need to replace it. well i thought that was crazy. after a month of the problem i gave it a shot. and there ya go that was it.

so to check the egr pull that vacume line off and drive it. it wont clear up instantly but after a few miles if thats the problem you'll know after about 2 or 3 miles. it doesnt hurt anything so dont worry. i doubt that would be it but im sure your willing to give it a shot. driver side manifold is where its located.
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  #21  
Old 07-03-2009
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Originally Posted by OVERtheEDGE View Post
when i had my misfire issue everytime someone else had one it seemed like their peoblem was my problem too. well after replace everything i could thing of i still had the problem, then a friends granfather said pull the vacume hose off the egr and drive home and see if thats the the problem, he said if u pull the line and it runns perfect then thats it and you need to replace it. well i thought that was crazy. after a month of the problem i gave it a shot. and there ya go that was it.

so to check the egr pull that vacume line off and drive it. it wont clear up instantly but after a few miles if thats the problem you'll know after about 2 or 3 miles. it doesnt hurt anything so dont worry. i doubt that would be it but im sure your willing to give it a shot. driver side manifold is where its located.
I'll check that out thanks.
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  #22  
Old 07-03-2009
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but make sure to take your glass off first
then send them to me LOL hope you get your truck fixed in time for Barstow
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  #23  
Old 07-03-2009
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ahh the noob is back home i see
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  #24  
Old 07-03-2009
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back home and exhausted haha three days four tanks of gas and a 5 hour drive from San diego to pismo with sitting in l.a. Traffic for an hour today
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  #25  
Old 07-03-2009
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now you know why i hate socal... **** the traffic
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