The vehicle was running fine last week.
Stood for a few days and then when put under load (flooring it) the 2nd cylinder was found to be misfiring. Popped off the engine cover and removed the 2nd cylinder's ignition coil, found the well had coolant water in it.
Drained the well and cleaned the coil. The misfiring problem was resolved. (For now)
Does coolant fluid in the cylinder well indicate gasket failure again?
Vehicle running fine after removing all water (with paper towels) and replacing two coils damaged by (I assume) water. See conclusion below for more info.
- 2010 Ford Focus ST 2.5
- Engine: B5254T
Head Gasket Service
Date: Approximately 2-3 months ago
Cylinder head testing and reconditioning. (passed pressure test but found a slight warp in the head which was corrected)
- Head bolts
- Head gasket
- Cam seals
- Intake gasket
- Exhaust gasket
- Thermostat housing
Questions and Answers
- "Any coolant pipes running close to that location?" No nothing.
- "Are you sure it's coolant?" Yes.
Excuse my delay in responding back. The problem I tracked to the flushing process which resulted in coolant/water spilling over onto the engine cover protecting the ignition harness and coils. Water quite easily makes it passed the engine cover and pools up and then leaks passed the ignition coils into the plug holes causing spark problems.