[Brian in Tucson]

A multi day project. Car runs really bad, multiple misfires (P0300 thru P0306.) Have replaced the plugs, coils, had the center manifolds off to check vacuum, WHAT'S LEFT?! It's been sitting about a year since it started misfiring. Just couldn't face it.

This week, siphoned out the 5 gallons of old gas. Put in 2 1/2 gallons of new premium. Still won't start. I replaced the fuel filter, it back flowed black gas. No gas flow from the feed line for the filter. Fuel pump isn't working. I jumped the relay connections, the fuel pump isn't working (it did work before all this.) I drained the gas, wiped out the tank of the last qt. of gas. I got some tank cleaner, water based. Mixed with about two gallons of tap water and dumped it in. I sloshed it around with a rag on a stick, fuel pump and sender out and on a table. It sat over night. Siphoned it out into a bucket. I used my shop vac to remove the residual water and then wiped it down with an old towel.

Yesterday, after letting it sit opened up for a couple of days, I installed the new fuel pump & the old sender tower. I put in a couple of gallons (the same ones used earlier) of premium, I'm planning on going out and getting 10 more so that the pump is submerged completely in gas. Then I'll jump the relay and see what's coming out at the input for the filter. That's where I am on the fuel system process. If it starts, it will be getting Techron for the foreseeable future.

I have a set of O2 sensors NIB to put in as well.

I have checked the fuse, btw. With an multimeter. It's the C4 fuse, btw.