Which is cylinder 7.???

[A2000SSinJersey]

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I just replaced my Alternator and am now getting a PO307 DTC. Which I see is misfire number 7 cylinder. For the life of me I cant find a picture that shows which one is number 7..............Sheesh.......... So I can at least check wires and such.

Any help please............?

Why would a alternator change cause that??............

THanks

[A2000SSinJersey]

Thanks for the suggestion...

Well I got my answer to which cylinder it is and swapped wires around made no diff.

Its getting more complicated now............

At first I was reading the PO 307 code from my ScanMaster.

I finally took my Lap Top to the car with HP Tuners Scanner.

I cleared the original 307 code and waiting a couple of minutes and it was showing lots of misfires.........and finally a PO 300 Code and indicating cylinders 2 and 7 as the culprits. I did not want to let it run too long, so not sure if it will eventually show more cylinders.

Can any one shed some lite here. All this just started after I replaced the alternator. The voltage seems ok....about 13.7

IS it not a good idea to run the engine or drive the car with these codes ? and why?


Thanks in advance.
__________________

[S2H]

we need to really determine whats going on in those cylinders..
possiblities
bad spark plugs...
bad wires
bad Injector giving way too much fuel and fouling the plugs
bad coil pack


A4 or M6
cam??
maybe just comon cam misfires...

need to know more details....

[A2000SSinJersey]

Originally it was showing msifire on 7 and 2. But primarily on 7.

I switched out the plugs and wires on the drivers side for new ones. Saving the passenger side for later, we all know why on an F body.......duh

So now it is showing misfire on 8 and 1..........primarily 8.........????

I have installed a new fuel filter, checked fuel pressure at fuel rail OK.

Listened to the Fuel injectors via a stethescope, they are clicking away.

The only plug that was fouled with fuel was 7 on drivers side anyway.

I am still worried about why this started right after I changed out the alternator?????? CAnt ne coincidence?????


HELP...........LOL

[A2000SSinJersey]

I had the numbers backwards in my last post. The misfire was now in number 1. Duh is me..........but good news.

As it turns out, it was the plugs. My problem after I replaced plugs was the number one cylinder wire was not seating properly. I finally heard the spark trying to bridge the gap. There is a metallic shroud that gets installed between the plug and the plug wires that was getting in the way. I dont know its purpose. It has a spring that looks like it wraps around the plug body, so maybe its a heat sink or it protects the wire boot from heat?

Any way, without it I could seat the wire properly. No I need to make ut work with the shroud.

I learned a couple of things here.

Trust the HP Tuners scanner software. It is RIGHT.
But, I have to learn to interpret the data. Cockpit error will get you everytime.

My Baby is running again...........Yehawwwww ;D

Thanks for the suggestions and have fun.