Bought 2010 Taurus sho 133k. nothing but headaches. Need some insight
Timeline:
Bought it with bad plugs(gap was way over .060) fixed that. then ran great
Blew front turbo(shaft broke). Replaced along with new primary o2s.
Then hit a deer . 5k in damages. havent fixed that yet lol
Now im getting multiple misfires. i replaced injector 6 and #6 COP. And it looks like injector 5 is now bad. But my question is
"Will a leaking/stick injector cause the whole bank to misfire?" STFT are like -29% (hence po150)

Unrelated to issue
changed all fluids, flushed all the front coolers, put in a ptu drain, tested for boost leaks (homemade kit) and cleaned intake valve carbon build up while intake was off

First post ever, but have always lurked around the forums

Wow, that's quite a list!

New ... Sp534 plugs?  Any metal in the oil after the turbo failed?  How did you clean the valves?  Was there a lot of carbon buildup?

Quote from: SHOdded on July 17, 2018, 07:47:37 PM
Wiw,mthats quite a list!

New ... Sp534 plugs?  Any metal in the oil after the turbo failed?  How did you clean the valves?  Was there a lot of carbon buildup?

Manu spell Checker is in order! Lol.  Z 

yep used sp534, carefully gapped them at .028
did 2 oil changes with motorcraft filters after turbo swap, didnt cut open the filters though but i doubt i got metal in the oil.
cleaned the valves with a screw driver and picks, soaked with oven cleaner(thats some powerful stuff!), then used a brush and carb cleaner.  Id say there was about a 1/16" of buildup all around in the port. easiest port and polish ive ever done!

Update for anyone interested.
Put in new injector 5, and all is well. Im thinking that with #5 dumping so much fuel the ecu was pulling fuel from the whole bank (in attempt to maintain correct afr) and causing a lean misfire on 4 and 6.

I also would NOT recommend using oven cleaner to clean valves. While I had no issues and it worked well. Some post repair research suggests it can be corrosive to aluminum if left too long.   

Glad it worked out!

Well I celebrated too soon. same codes came back, except for injector 4 misfire. Intake comes off for the 4th time!

Do ALL the injectors this time, I think you will find it an easier way to go.

Quote from: SHOdded on July 30, 2018, 06:47:13 PM
Do ALL the injectors this time, I think you will find it an easier way to go.

Another update. po130 and cyl3 misfire. Should have taken advice and done all 6, thought I could get away with just the front 3 (bank 2). Injector 3 (Bank 1) is now leaking, even though Bank 1 previously had no issues. Lesson learned. Ordered up 3 more.

Well, hopefully after these 3 are replaced, you will be good to go for quite a while!  Good luck, let us know how it turns out.

Update
3 New injectors installed. Runs way better now! lol
I used bosch injectors since same as motorcraft from rockauto at $80 each
Tips for injector replacement:
Pull fuel pump fuse. (if you dont it will prime the system if you bump the hood switch/sensor)
Cut a hole in under bumper valance thing to drain coolant, much less messy.

Wish you the best with the new parts!  Enjoy