Focus Mk II 1600 - water around spark pl. My wife has a Ford Focus mk II, 1600 engine. A recurrent problem is water getting into the spark plug "valley" and then when the engine has warmed up, causes one of the spark plugs to become non-operational (as opposed to mis-firing - 'cos it doesn't fire at all.) The rubber seals around the top of the Bad Piston: Aside from a faulty piston ring allowing engine oil to flow to the cylinder and saturating the spark plug, a bad piston can also cause the oil in the spark plug well. Due to excessive heat, the piston may soon start cracking. Such a faulty piston can result in engine misfire, excessive oil combustion, and rattling sounds while the @HowIFixedIt How To Fix A Misfire On A Ford Focus. Misfiring Ford Focus. P0300 P0316 P0301 P0304. Check Engine Light diagnostic Ford Focus. #preventivemainte Diagnosing a clogged injector is not always easy because the symptoms act similar to low compression or an ignition problem, such as a bad ignition coil, a broken spark plug wire, a bad spark plug 2.0L. 4 CYL. FWD. MANUAL. 36,000 MILES. Hello.I have a 2015 focus st and it needs spark plugs. The manual calls for motorcraft SP-537 plugs. When I go to the ford parts website it calls for SP-527. Can you tell me the difference between the two?The SP-537 plug gap is.051 which seems a little big for the application as would cause fouling over
Ford calls that document the Electrical Vacuum Troubleshooting Manual (EVTM). You are going to want to find the page for ignition. When you find that page, you will see that the spark signal originates inside the Powertrain Control Module (PCM). First you need to verify the wiring for the key signals from the PCM all the way to the coil on plug.
