misfire #4 and # 8

[maineiac]

whats the pattern of our cylinders,are theses the two rear?

[Marauderjack]

Yep.....facing the engine the passenger's side is 1-4 (front to back) and the driver's side is 5-8....Good Luck!!:beer:

[maineiac]

thanks ,hopefully just the coils,but i replaced them lkast aug with ford mo co.

[Marauderjack]

Remove the coil covers and look for water in the spark plug tubes.......those are bad to leak when washing the engine!!:shake:

[burt ragio]

What indication leads you to mentioned # cylenders are not firing ?
1) Check spark plugs & gap use anti seize.
2) Re install cop use electode grease & listen for click good conection.
3)Swap cop to comfirm bad cop.

[maineiac]

SCT tuner misfire #4 and #8

[maineiac]

Two new ford coils,dealership replaced them free since they where ony 8 months old,seems to run fine,but check engine light still on ,can i reset the code using my SCT tuner?

[babbage]

Two new ford coils,dealership replaced them free since they where ony 8 months old,seems to run fine,but check engine light still on ,can i reset the code using my SCT tuner?

Yes you can reset the CEL with the SCT device. "clear DCT's" is what you want...

Also I'd suggest a rear head cooling mod and or a better waterpump. Cly 8 is the dreaded hot spot -- dead end for coolant. The extra heat can cause all kinds of failures.

[maineiac]

Cylinder # 6 now WTF

[Motorhead350]

Have you pulled the coils yet?

[maineiac]

brand new ford ones in AUG 2012,ford replaced two bad ones for me just last month,going to see them tomorrow for a full set of replacements !

[babbage]

You can get a set from Sparta on this site cheaper than dealer..

[maineiac]

Already bought them back in August,they are going bad so i hope they will replace,they did the first two no questions asked.If not sparta here i come!

[Marauderjack]

If the tabs on the low voltage plugs break they will not lock onto the coils and misfires will occur......check that all are locked on!!:cool4:

I had one break and soldering in the replacement was not much fun!!:shake:

[maineiac]

thanks i will check those too.