- engine computer faults stoerd were for combustion misfire cylinders 1 and 4, air mass sensor fault, for too lean condition. * ran smoke machine to check for intake/vacuum leaks. noticeable intake/vacuum leak found at PCV valve, which is part of the valve cover. * also found all ignition coils and spark plugs sitting in engine oil. oil leak at ignition coils/plugs was caused by oil leaking into the spark plugs tubes, causing the two coils to short out. this oil leak was coming from the engine valve cover. tested with new #1 and #4 ignition coils; engine runs much better. * after repair approval by customer, installed new engine valve cover with new bolt set and gasket set. installed all six new engine spark plugs. installed all six new engine ignition coils. * ran smoke machine again; found no intake/vacuum leaks. cleaned area. cleared engine fault codes. * test drove vehicle with no engine running issues felt. idle is good, no rough running felt; no engine stalling experienced. checked and found no engine fault codes in engine control unit.
MARK G. gave our service a 5 star review on 11/20/2019