Mis firing on my number 8 clyinder

possible improper flash to new ecm or improper wiring

2001 Ford Expedition 4.6 liter V-8 VIN "W"




2001 Ford Expedition 5.4 liter SOHC V-8 VIN "L"




Hope this help (remember comment and rated this).

You are having an injector problem. The cylinder is not getting any fuel. No fuel no fire.

1999 Dodge Truck Durango 4WD 5.2L SFI 8cyl


5.2L and 5.9L Engines Firing Order: 1-8-4-3-6-5-7-2 Distributor rotation: Clockwise

I hope help you with this. Good luck (remember rated this help).

They're numbered like this:
Pass side: 2-4-6-8 Driver side: 1-3-5-7

Try changing the plugs or coils from #2 into a different cylinder. If, for example, after changing, you get a different code such as PO305, you'll be able to pinpoint the issue and cylinder its coming from. If you don't own your own code reader, autozone rents them out. Sometimes they'll lend it for free depending on who you get.

From what you are describing it sounds like it must be a valve lifter sticking. Try putting a cup of transmission oil in your crankcase, or pick up some suitable additive from your local parts store. I wish i could hear it and give you a better idea. Maybe let them listen to it at the parts store, and they can determine if it's a lifter or not. Let me know how you make out.

Put new distributor cap and rotor at least

The p0300 What does that mean? Basically this means that the the car's computer has detected that not all of the engien's cylinders are firing properly.
A P0300 OBD DTC code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-
==================================
The p0430 What does that mean? Basically this means that the O2
downstream of the catalytic converter on bank 2 is detecting that the converter is not working as efficiently as it should be (according to specs). It is part of the vehicle emissions
system.

A cylinder #5 misfire is a P0305 code. Check out this great article for more suggestions: http://www.obd-codes.com/p0305

IS THIS A 99 CROWN VIC? IF SO IS IT MISFIRING? IF THIS IS THE CASE YOU MORE THAN LICKLY NEED PLUG WIRES.

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