I have just received theses codes and have no clue were to go from

https://www.dropbox.com/s/jgwvzhuyn4...rover.jpg?dl=0

I have checked all wires and checked plug gaps. they are set at .034-.035, sticker on truck states .033-.038 so i figure they are good at what i have them at. I put 4 new o2 sensors on a month ago. I added a bottle of fuel system cleaner at last fill up and have driven about 15 miles on tank of 93 octane.

Any help would be great

Thank you,

Elliott

 

what year is your truck?
...now that you've checked the plug wires and plugs ....go back and replace them...start with that, , get the codes cleared and start over

 

It's a 96 with 212000 on it. I will grab some plugs and replace them. I have 8mm wires from STI, Should I replace them too? Or For testing would be ok if I grab a set of 7mm when I grap the plugs or just stick with the 8mm wires?

 

the usuall suspects on all the misfire codes you have are plugs and wires...so for the purpose of getting rid of the codes I would go new plugs and new wires.....just use regular pluge in this truck.....nothing fancy required ..champion RN11YC or NGK BPR5ES ( or BKR5E if you'd rather use a 5/8" socket)....it's fine to go with the heavier wires......but new assumed good 7's are better then unknown 8's imop..........

 

all wires and plugs have been changed. cleared all codes and went for a hour drive and have codes again.

Here they are: https://www.dropbox.com/s/ydcgotd810...codes.jpg?dl=0

 

Update: I hooked up my spark tester to both 5 and 7 and do get spark. I'm going to do a compression test on all cylinders and I will post the results.


Compression results:
Cyl 1 110psi, cyl 2 112 psi, cyl 3 110 psi, cyl 4 105, cyl 5 115 psi, cyl 6 100 psi, cyl 7 112 psi,
cyl 8 110 psi
I'm at a lost with this one.

 

Bank A is running lean 1,3,5 and 7.

Bank B is running rich 2,4,6, and 8.

Bank A cylinders 5 and 7 vacuum leak probably at the intake manifold.

Bank B have injectors either leaking or hosing fuel instead of atomizing.

Just guesses, you have to figure out the rest........

Misfires can be air/fuel, ignition or mechanical, you've only checked ignition and compression. How old are the O2's?

 

I would say to o2s are 6 months to a year old.

 

Do you have a scanner that reads live data? It's important, in this case, to know what the O2's are reporting.

 

Yes I have a log file of them here they are:

https://www.dropbox.com/s/tdwfc54q25...-7-17.pdf?dl=0

If I'm going to replace the intake manifold gasket should I go ahead and do a head gasket job too. I have owned the truck for 9 years and never replaced them and there was limited records with it when I bought it. I figure they have never been done.