08EddieCA
Well-Known Member
- Joined
- March 31, 2016
- Messages
- 418
- Reaction score
- 83
- Location
- CA
- City, State
- Los Angeles, CA
- Year, Model & Trim Level
- 08 & 03 X (Eddie B & XLS)
SOLVED*****
Ok, I thought I was doing a good thing. I replaced the iridium plugs with a tune up care package I received from a family member at ford. #4 plug was difficult to remove. It came out and looked fine. When I was installing the new plug I looked at the old plug first. It looked okay. Three of the threads looked as if they might have been cross threaded - but not nearly as bad as I've seen in the past. I installed the new plugs. Now I've receiving misfire data and a CEL for #4.
I gave the plug a slight right turn and it turned slightly, to a solid tight position (yes I know not to do this when the head is hot). Reran the X on around town and on the 405 at speed.
Fuel injector is new (all of them). No problem with the DESNCO PT20TT plugs that were installed prior to the oem - ram fine. I'm going to reinstall the DENSCO tomorrow morning. I took it for a ride on the 405 at speed and it ran fine however my scanner showed 45 misfires for #4. Wires are new motorcraft 8mm. Dialectic grease utilized inside boot. Idles a little rough. Slight exhaust note on idle when the misfire occurs.
If the injector is fine and operating as it should (equal ohm test on all injectors), what else could it be? If the plug is not seated entirely, could this cause a misfire? Trouble code shows misfire #4 on scanner.
Besides installing a the DESNCO back into #4, do you have any ideas on what else I could search for? It was running perfectly fine before I changed he plugs. Coil is 3 months old - remember it ran perfectly this morning.
Mileage on the motor is 1,100 miles and boot is fully seated on the plug and on the coil. I'm stumped. Any ideas I can try?
Changed front timing tensioner to oem motorcraft - that issue is resolved.
PS - passed smog on Saturday - thank goodness.
UPDATE: Bought a thread chaser and some heavy all purpose grease to hopefully catch any metal bits. Plus I'm going to move the wires around just in case it's a bad wire.
Ok, I thought I was doing a good thing. I replaced the iridium plugs with a tune up care package I received from a family member at ford. #4 plug was difficult to remove. It came out and looked fine. When I was installing the new plug I looked at the old plug first. It looked okay. Three of the threads looked as if they might have been cross threaded - but not nearly as bad as I've seen in the past. I installed the new plugs. Now I've receiving misfire data and a CEL for #4.
I gave the plug a slight right turn and it turned slightly, to a solid tight position (yes I know not to do this when the head is hot). Reran the X on around town and on the 405 at speed.
Fuel injector is new (all of them). No problem with the DESNCO PT20TT plugs that were installed prior to the oem - ram fine. I'm going to reinstall the DENSCO tomorrow morning. I took it for a ride on the 405 at speed and it ran fine however my scanner showed 45 misfires for #4. Wires are new motorcraft 8mm. Dialectic grease utilized inside boot. Idles a little rough. Slight exhaust note on idle when the misfire occurs.
If the injector is fine and operating as it should (equal ohm test on all injectors), what else could it be? If the plug is not seated entirely, could this cause a misfire? Trouble code shows misfire #4 on scanner.
Besides installing a the DESNCO back into #4, do you have any ideas on what else I could search for? It was running perfectly fine before I changed he plugs. Coil is 3 months old - remember it ran perfectly this morning.
Mileage on the motor is 1,100 miles and boot is fully seated on the plug and on the coil. I'm stumped. Any ideas I can try?
Changed front timing tensioner to oem motorcraft - that issue is resolved.
PS - passed smog on Saturday - thank goodness.
UPDATE: Bought a thread chaser and some heavy all purpose grease to hopefully catch any metal bits. Plus I'm going to move the wires around just in case it's a bad wire.
