I have a 2003 nissan sentra ser spec v. I cruising down the road today when i noticed that it was miss firing really bad. I went home looked at the spark plugs and noticed the spark plug #4 was smashed. I then looked down into the cylinder and say the the piston had some dings on it, but just on that piston. I bought new spark plugs and took it for a cruise. But within 2 mins of driving it happened again. Can anyone tell me what this could be?
It sounds like you have a very loose wrist pin if the engine still runs. A rod that loose would most certainly have destroyed the engine quickly.
Get it to a shop where they can (possibly) repair the one loose piston.
2"DROP SUSPENSION LOWERING SPRINGS/SPRING 91-94 NISSAN SENTRA DOHC B13 SER GREEN, 2002 NISSAN SENTRA SE-R ENGINE CONTROL UNIT ECU ECM JA56R37 *5ZE15J*, Replacement Radiator 00-06 Nissan Sentra SER Model Auto / Man 2.0L L4 214104Z200, Replacement Radiator 00-06 Nissan Sentra SER Model Automatic 2.5L L4 214604Z700, STAINLESS RACING MANIFOLD HEADER/EXHAUST 02-06 NISSAN SENTRA 2.5 SER SE-R SPEC-V, STAINLESS RACING MANIFOLD HEADER/EXHAUST 02-06 NISSAN SENTRA 2.5 SER SE-R SPEC-V, NISSAN SENTRA XE/GXE/SE/SER B13 JDM BLUE SUSPENSION COIL RACE LOWERING SPRINGS, 02-05 NISSAN SENTRA SER SPEC-V COLD AIR INTAKE+FILTER B, NISSAN SENTRA XE/GXE/SE/SER B13 JDM GREEN SUSPENSION COIL RACE LOWERING SPRINGS, NEW 2004-2006 NISSAN SENTRA SE-R SER SPEC V TAIL LIGHT LAMP PASSENGER SIDE, DNA YELLOW SUSPENSION LOWERING SPRING/SPRINGS 91-94 NISSAN SENTRA TSURU B13 SER, 1995 95 Nissan Sentra Service Manual XE GXE GLE SER , PAINTED NISSAN SENTRA SER FACTORY STYLE SPOILER 2007-10, STAINLESS STEEL EXHAUST HEADER 02-05 NISSAN SENTRA SER SE-R B15 2.5 4CYL SR20DE, 1996 96 Nissan Sentra Service Manual XE GXE GLE SER R , NISSAN SENTRA SER/SPEC-V 02-06 2.5L DOHC STAINLESS STEEL HEADER/EXHAUST SYSTEM, 1999 99 Nissan Sentra Service Manual XE GXE SER SE FSM , 1991-1994 NISSAN SENTRA TSURU REAR WINDOW SPOILER SR20DE SER 2.0 B13 , Nissan 02-03 Sentra 2.5 SER - 2.5" Piping / 4.5" Tip MEGAN NA Cat Back System, Nissan 91-94 Sentra SER - MEGAN 2.5" Piping / 4.5" Tip - Cat Back System NA Type, Nissan 07+ Sentra SER/Spec V - MEGAN Racing 2.35" piping Mid section pipe, Nissan 07+ Sentra SER/Spec V-DRIFT SPEC - MEGAN Racing Single 4" Axle back, Nissan 04-06 Sentra SER/Spec V - MEGAN Racing Single 4" Axle back, Nissan 07+ Sentra SER/Spec V -OERS - MEGAN Racing Single 4" Axle back, 2005 Nissan Sentra SER SPEC V Emblem OEM 06 04 03 02 01 00, 2000-2003 NISSAN SENTRA SER SE XE 4DR JDM SMOKED LENS CRYSTAL HEADLIGHTS 01 02, 2000-2003 NISSAN SENTRA SER CRYSTAL JDM BLACK HEADLIGHTS LIGHTS 01 02, 00 01 02 03 04 05 06 NISSAN SENTRA SER PRIMED FENDER LH, Nissan Sentra 02 03 04 05 06 SER SpecV T-304 Downpipe, 1994 94 Nissan Sentra Service Manual E SE XE GXE SER R ,