2011 Ford Ranger
Mileage
211,213
Service Date
2/5/2026
Services Performed
- Code Scan: Engine – Memory Codes P1000
- OBDII System Checks Incomplete P1260
- Theft Detected, Engine Disabled Monitors are incomplete. Ignition lock can be rotated without key, and will set the P1260 code. Starts and runs rough and sometimes stalls or is hard to keep running. Engine is misfiring all the time. Smoke from tailpipe on start. Scan data shows constant misfire on #3 at idle, or low RPM. Cranking rhythm is irregular. Compression test, all cylinders: 1- 220 psi 2- 230 psi 3- 75 psi 4- Cant get a good reading. #4 plug was only in by one thread, came out by hand as soon at socket was put on. Plug boot was also sitting 3/4" too high. Cannot screw compression tester in. Plug was cross threaded and left. Got 150 psi, but compression was leaking around threads. Need to chase the spark plug threads in cylinder head to try to get plug in correctly. Leak down test shows 70-75% leakage. No leak found through valves, leak detected into crankcase through rings. Added oil to cylinder and checked leakage again. Leak rate was less than 5% for about 5 seconds then increased back to 75% as oil pushed though rings. Cylinder wall is scored when looking with borescope. Needs engine replaced.
- Repair #4 spar plug threads
Phillip S. gave our service a 5 star review on 2/7/2026
