Major Misfire

[Nate's Alero]

Put the car all back together, and now, misfire!


misfire so bad the car wont stay running, REALLY old fuel in the tank, 2+ years old...


any ideas?

[Gr1m]

lol sick, it could be the water in your gas or you could have your wires mismatched

[Nate's Alero]

lol sick, it could be the water in your gas or you could have your wires mismatched

hmm, ima check wires, can someone give me the order on the coil pack and then order on the engine?


i thought the order for the engine was


1 3 5

2 4 6

and the coil pack had the numbers right on it



ima add like, 5 gallons of fuel to the car and put some water remover and fuel injector cleaner into the tank, and maybe i fits out there, fuel revitalizer?

[WhiteV6]

Disconnect the fuel line from the rail and run the pump to get the gas out. Then change your fuel filterand put new gas in. I wouldn't be surprised if the injectors are gummed up inside as well from sitting. Letting a car sit for 3 years = all bad.

[cherrington17]

fuel injector cleaner?

water wetter?

Edit: nate already suggested these himself... imma idiot

[AftermathAlero]

your coil pack should be 5-2-3-6-4-1

Sometimes the numbers are mislabled on the coils, cuz they also fit other cars like the Grand prix..etc.

[Nate's Alero]

your coil pack should be 5-2-3-6-4-1

Sometimes the numbers are mislabled on the coils, cuz they also fit other cars like the Grand prix..etc.

thanks! it is wrong so that is my problem! thanks!

[WhiteV6]

1 and 4 can be switched, 6 and 3 can be switched, and 2 and 5 can be switched. Both fire at the same time:)

[-Alero-]

is there a diagram of this?

[Beholder88]

is there a diagram of this?

There is a diagram of sorts in the Haynes manual.

[Nate's Alero]

yeah, i got home, the wires are correct, now im beginning to think its a vacuum leak,


newest thing, when i start my alero, it goes right to redline, without me even touching the pedal, do the V6's TB's have gaskets? i think there is also a loose bolt on the TB....

[SouthDakotAlero]

Either way you need to get all that old gas out of the tank. It is not stable for that long. I had to dispose of 18 gallons of gas in my boat because it sat for a couple years.