STILL HAD A SMALL MISS PUT IT ON A SCAN MACHINE AN ENGINE STILL HAD A RANDOM MISS FIRE ON CYLINDER 3 AN 5 MISS ON 3 20,000 511,000 TIMES OTHER CYLINDERS 100 TO 200 TIMES SO I DUG A LITTLE DEEPER IN THE PROBLEM TEST BACK PRESSURE ON BOTH CAT CONVERTERS LEFT BANK WHERE MISS WAS AT THE CAT HAD HIGH BACK PRESSURE OF 34 LBS RIGHT BANK 2 LBS BACK PRESSURE SO I REPLACED LEFT CAT ALSO RUN A PINT OF INJECTOR CLEANER NO NAME FROM A SMOG SHOP THAT THE OWNER SAID I USE THIS ON USED CAR LOT CARS TO CLEAN IT UP TO SMOG BUT YOU CANT BUY THIS IN CALIFORNIA MUST BE SOME GREAT TIGER PEE. SO NOW SHE CLIMBS UP THE GRAPEVINE ON I 5 WITH 8000 LBS OF TRAILER START AT 70 MPH AT THE BOTTOM AND TOP OUT AT THE TOP AT 55 MPH/3200 RPM IN DRIVE NEVER HAD TO GO TO SECOND GEAR ON THE PULL UP. THIS IS A GREAT GENERAL MOTORS TRUCK AGAIN
