NHTSA Complaint #10164710 — 1999 WINNEBAGO CHIEFTAIN

JUNE 2005 MY WIFE AND I WERE LEAVING ROSWELL NM IN OUR 1999 WINNEBAGO MOTOR HOME WHEN WE EXPERIENCED A LOUD POPPING NOISE. I CALLED OUR ROADSIDE ASSISTANCE CARRIER AND WAS DIRECTED TO A REPAIR FACILITY A SHORT DISTANCE AWAY. AFTER LISTENING TO THE NOISE AND LOOKING UNDER THE VEHICLE THEY DETERMINED IT MUST BE AN EXHAUST MANIFOLD LEAK. THEY WERE UNABLE TO LOCATE AN EXHAUST MANIFOLD GASKET LOCALLY AND HAD TO ORDER ONE. WE LEFT THE MOTOR HOME WITH THEM AND PROCEEDED TO CARLSBAD NM IN OUR TOWED VEHICLE. UPON OUR RETURN A COUPLE DAYS LATER THE MECHANIC WAS JUST COMPLETING THE GASKET REPLACEMENT. WHEN HE FINISHED, HE STARTED THE ENGINE ONLY TO DISCOVER THE NOISE WAS STILL THERE. FURTHER INVESTIGATION REVEALED THE #4 SPARK PLUG ON THE PASSENGER SIDE HAD BLOWN OUT AND ALSO BROKE THE COIL. THEY WERE ABLE TO GET A NEW SPARK PLUG AND COIL FROM THE LOCAL FORD DEALER. AFTER REPLACING THESE PARTS WE WERE ABLE TO RETURN TO COLORADO. ON JULY 6, 2006 WE WERE AGAIN LEAVING TOWN WHEN APPROXIMATELY TWO MILES FROM HOME WE HEARD THE FAMILIAR POPPING NOISE. I RETURNED HOME AND DISCOVERED THE SAME #4 SPARK PLUG HAD BLOWN OUT AGAIN BREAKING THE COIL. I WENT TO THE LOCAL FORD DEALER AND PURCHASED ANOTHER SPARK PLUG AND COIL THINKING ALL I NEEDED TO DO WAS REPLACE IT. I ASKED THE PARTS PERSONNEL WHAT CAUSED THIS TO HAPPEN AND THEY TOLD ME THEY HADN'T HEARD OF THIS BEFORE AND DIDN'T KNOW WHAT CAUSED IT. AFTER SEVERAL ATTEMPTS AT REPLACING THE SPARK PLUG I CALLED A MOBILE REPAIR SERVICE TO SEE IF THEY COULD ASSIST ME. THE PERSON I TALKED WITH TOLD ME ABOUT THE TRITON V-10 BLOWING SPARK PLUGS AND THAT I WOULD NEED TO REPLACE THE CYLINDER HEADS AT A COST OF $2,000. I THEN CALLED A LOCAL GARAGE AND EXPLAINED MY PROBLEM. THEY SAID THEY COULD TRY AND PUT A HELICOIL IN THE HEAD TO FIX THE PROBLEM FOR AROUND $220. I TOOK THE MOTOR HOME TO THEM AND THEY WERE ABLE TO DO THE HELICOIL FOR $220 PLUS THE SPARK PLUG AND COIL THAT I FURNISHED. THIS SECOND SPARK OCCURRED AT 29,600 MILES. *NM