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P0304 Diagnostic Trouble Code Discussion for December 2017

Cylinder 4 Misfire Detected *

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Trouble Ticket Help Requests for DTC P0304

	Help Request	Posted
	2004 Lexus LX470 4.7L Surge, Cuts out, Misfire, MIL Lamp on VIN: JTJHT00W54 P0304: Cylinder 4 Misfire Detected. Customer went to Autozone and they sold him plugs and coils for all cylinders which he replaced - no fix. I replaced the Mass Airflow Sensor (MAF code) and cleaned the throttle body which cleared up a rough idle. Clear cylinder codes and they come back on ...	December 11, 2017
	2008 Subaru Outback 2.5i 2.5L Misfire VIN: 4S4BP61C88 P0304: Cylinder 4 misfire. ... put in the house down payment fund. Engine was locked up when I bought it. Built an engine for it, block was bored and decked-heads were decked and 3 valves on the #4 cylinder were replaced due to valve clash (#4 rod cap came off) Replaced plugs W/oem...	December 11, 2017
	2009 Honda Fit Sport 1.5L Misfire, MIL Lamp on VIN: JHMGE88469 P0304: . Help Honda Techs!! This fit sets misfire codes in all cylinders.customer states the engine has always ran fine when this happens. we have tested compression, leak down, fuel trim is at 1.02 long and short- all spot on. We have replaced the rear o2 sensor w...	December 15, 2017
	2009 Honda Fit Sport 1.5L Misfire, MIL Lamp on VIN: JHMGE88469 P0304: . Help Honda Techs!! This fit sets misfire codes in all cylinders.customer states the engine has always ran fine when this happens. we have tested compression, leak down, fuel trim is at 1.02 long and short- all spot on. We have replaced the rear o2 sensor w...	December 18, 2017
	2008 Honda Odyssey EX-L 3.5L MIL Lamp on VIN: 5FNRL38788 P0304: Cyl 4 misfire. This van has an intermittent misfire on cyl 4. I am leaning toward a fuel inj so I flushed the fuel system and put two cans of 44k in the tank to see if it helps The valves have been adjusted and the spark plugs have been replaced along with a coil on cy...	December 21, 2017
	2006 Audi A6 3.2L No Start, Stall VIN: WAUKH74F66 P0304: cyl 4 misfire. I got this A6 with a no start, it would just crank over didnt even try to fire seemed like a no fuel issue. first i scanned codes and got 3 misfire codes 2 for one bank and 1 for the other bank. checked low side fuel pressure which was 55 psi with key on, ...	December 26, 2017
	1997 Ford F-150 Lariat 4.6L Misfire VIN: 1FTDX18W4V P0304: cyl 4 misfire. This one is eating my lunch. As you can see we have did several things and it is not working. The original problem was a no start with no fuel pressure. Replaced fuel pump and filter and it started with misfire cyls 2-6. Removed valve covers and repaired r...	December 26, 2017