Need help asap!!!

CheyenneMustang · August 1st, 2011, 09:23 PM

As some of you may know I was having misfire issues after using seafoam yesterday. Coded a misfire in cylinder one. Changed the spark plug in cylinder one and started it up and seamed to run fine. This morning there was a slight misfire on acceleration so I changed all the plugs. Now the misfire us worse than it was yesterday. I seriously need some help!

ag11hockey · August 1st, 2011, 09:40 PM

did you do wires too?

CheyenneMustang · August 1st, 2011, 10:06 PM

A few weeks back

02Sandstorm · August 1st, 2011, 10:06 PM

oh shit... i was going to seafoam

stephen · August 1st, 2011, 10:07 PM

You may have dislodged enough carbon to foul up the plugs.

I would try driving it some distance to clean the carbon out, then remove the plugs and remove any carbon from them. After that hopefully it will be OK.

Replacing the wires might also be a good idea.

mcqueen · August 1st, 2011, 10:21 PM

100% sure the #5 and 6 wires are on the correct plugs?

Green_6er · August 1st, 2011, 10:26 PM

yeah what mcqueen said because cylinders 5 and 6 are tricky lil bastards and r switched up. also could it be your coild pack possibly just decided to go out coincidentally?

CheyenneMustang · August 1st, 2011, 10:53 PM

Ok just checked and I did switch 5 and 6. that fixed the really bad misfire but still have the same misfire like yesterday. Is there any way to check the coil pack before buying a new one?

mcqueen · August 1st, 2011, 11:22 PM

Gotta start with the dumb little shit man, most problems are less complex than one would think

And I think you can test the coil pack with a voltmeter.

spaseghost · August 1st, 2011, 11:28 PM

you can just do the old screwdriver trick, or ohm out the wires and see if one or more are bad. are you getting a cel?

CheyenneMustang · August 1st, 2011, 11:42 PM

yeah the only codes are misfire in cylinder one and fault in o2 sensor which is just from my exhaust change

spaseghost · August 1st, 2011, 11:47 PM

verify the following, spark on the plug, fuel pressure (specifically fuel to cylinder one), and what fault are you getting for the o2 sensor? there is more than one fault detectable for each sensor.

CheyenneMustang · August 2nd, 2011, 12:10 PM

Took her to the shop today and they found that one of the wires had ended up resting on the magnified and burned through the insulation which caused an arc across the manifold. It burned out 1 and 6 of the coil pack. Completely coincidental that it happened right after seafoaming it. Just glad that its getting fixed right.

SON1C · August 2nd, 2011, 03:58 PM

How much did that run you at the shop?

CheyenneMustang · August 2nd, 2011, 04:26 PM

It was $363.90. That included new wires, new coil, oil change, and labor. They also somehow got rid of my O2 sensor error code

mcqueen · August 2nd, 2011, 05:37 PM

They might have just cleared the code. You'll know in a couple of days.

CheyenneMustang · August 2nd, 2011, 06:47 PM

Originally Posted by mcqueen

They might have just cleared the code. You'll know in a couple of days.

It usually turns back on within 10mins of driving, didn't this time, I guess we'll see though

August 1st, 2011, 09:40 PM	#2
ag11hockey Enthusiast 1999 Mustang V6 Join Date: May 2010 Location: Rochester NY Posts: 654 iTrader: 0 reviews	did you do wires too? __________________

August 1st, 2011, 11:28 PM	#10
spaseghost Regular It makes my wife horny 16.3@84@5kft Join Date: Apr 2007 Location: Grand Junction, Colorado Posts: 257 iTrader: 0 reviews	you can just do the old screwdriver trick, or ohm out the wires and see if one or more are bad. are you getting a cel? __________________ 2003 Mustang - 3.8, 5spd., bbk, eibach no isos, duals, hids, 72k 1968 RS/SS Camaro - 350, .090 over, .500" lift, flows, M21 2004 Nissan Armada - HIDs, LEDs, sippy and DVDs 2002 F150 - Screw, 5.4l, GOTTS w/ K&N, flow super 44

August 1st, 2011, 11:47 PM	#12
spaseghost Regular It makes my wife horny 16.3@84@5kft Join Date: Apr 2007 Location: Grand Junction, Colorado Posts: 257 iTrader: 0 reviews	verify the following, spark on the plug, fuel pressure (specifically fuel to cylinder one), and what fault are you getting for the o2 sensor? there is more than one fault detectable for each sensor. __________________ 2003 Mustang - 3.8, 5spd., bbk, eibach no isos, duals, hids, 72k 1968 RS/SS Camaro - 350, .090 over, .500" lift, flows, M21 2004 Nissan Armada - HIDs, LEDs, sippy and DVDs 2002 F150 - Screw, 5.4l, GOTTS w/ K&N, flow super 44

August 2nd, 2011, 03:58 PM	#14
SON1C Run ur car, not ur mouth. 2003 Sonic Blue 4.6L Join Date: Jul 2010 Location: Northern Virginia Posts: 4,059 Blog Entries: 1 iTrader: 3 reviews	How much did that run you at the shop? __________________ 238rwhp/263rwtq Drew's Build Thread

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August 1st, 2011, 10:06 PM	#4
02Sandstorm Regular 03 Mach 1 Join Date: Mar 2011 Location: Concord, North Carolina Posts: 143 iTrader: 0 reviews	oh shit... i was going to seafoam

August 1st, 2011, 10:07 PM	#5
stephen Hardcore Enthusiast Join Date: Feb 2007 Posts: 1,262 iTrader: 0 reviews	You may have dislodged enough carbon to foul up the plugs. I would try driving it some distance to clean the carbon out, then remove the plugs and remove any carbon from them. After that hopefully it will be OK. Replacing the wires might also be a good idea.

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