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mY 87 TOYOTA SUPRA # 5 AND 6 CYLINDERS SPUTTER THE OTHER 4 RUN FINE i FOUND THIS OUT BY DICONNECTING THE fUEL INJECTION WIRES WHILE THE CAR WAS RUNNING TO FIND OUT WHICH CYLINDERS WAS DOING THIS.THE SPARK PLUGS ARE NEW AND THE COMPRESSION IS 150 LBS IN BOTH CYLINDERS. I LINE UP THE # 1 PISTON @ TDC AND THE TIMING MARKS ON THE CAMS AND CRANK PULLY ARE PERFECT .THE TIMING LIGHT TELLS ME THE # 1 SPARK PLUG IS FIRING 10 DEGREES BTDC WHICK IS PERFECT FOR THIS CAR .wHEN I MOVE THE CAMSENSOR A LITTLE SO ITS FIRING 5 DERGREES BTDC IT STARTS TO PULSATE THE ENJINE UP AND DOWN WHICH COULD BE NORMAL.MY KNOCK SENSOR IS WASTED SO MY CHECK ENJINE LIGHT IS ON.bUT ALL MY SUPRAS DID THIS AND THERE WAS NEVER AN ENJINE PROBLEM LIKE THIS.hOW CAN THE ENJINE RUN GOOD ON THE FIRST FOUR CYLINDERS AND THE LAST 2 RUN LIKE SHIT.THE GAS IS GOOD GAS AND THE FUEL PREASURE REGULATOR IS WORKING PROPERLY.sO NOW i NEED A NEW WINDSHIELD BECAUSE I GOT MAD AND THREW A 4 BY 4 THREW IT AND LANDED ON THE PASS. SEAT.SO BEFORE i KILL MY CAR i NEED SOME HELP.CUZ IM A GREAT MECHANIC BUT THIS HAS ME STUMPED.MABEY THIS IS REDICULOUS BUT COULD IT BE THE WIRES CUZ THEY ARE THE LONGEST ONES ON THE ENJINE MABEY THE SPARK ISN'T GETTING THERE FAST ENOUGH.bUT THE SPARK IS PAINFULLY POWERFUL ,IT JUMPS 3 INCHES TO FIND A GROUND WHEN i DISCONNECT IT WHILE THE CAR IS RUNNING....WHEN I STAND AT THE EXHAUST AND IT SPUTTERS A BLAST OF AIR COMES OUT AS IF THE SPARK IS FIRING TO LATE(WHEN THE EXHAUST VALVE OPENS).....BUT THE # 1 SPARK PLUG IS FIRING RIGHT ON THE MONEY HUH GOOD LUCK TRYING TO FIGURE THIS ONE OUT..i CHECKED FOR VACUUM LEAKS EVERY WHERE ALREADY.THE FUEL INJECTOR ARE NOT CLOGGED THEY ARE ALSO NEW.A TOYOTA MECHANIC COULDN,T EVEN FIGURE THIS ONE OUT.
 
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