P0300 definition: Random, Multiple Misfire Detected. Issue Severity: SEVERE – Stop driving immediately. Repair Urgency: Fix this code immediately (same-day if possible) to avoid ignition failure, catalytic converter damage, and dangerous conditions. Diagnosis: A multiple misfire can be caused by anything from faulty spark plugs to low engine The 2006 Ford F-150 has 46 problems reported for spark plugs break off in head. Average repair cost is $1,210 at 88,550 miles. (Page 1 of 3) Old plugs were not old..a few months. Tried in two cars now and both showed improvements. So try Denso iridium TT Spark Plugs IK16TT. These fit the duratec 1.6 and I left factory gapped. Cost a few bob (try the green spark plug company) but given the slight mpg increase I guess over the year they pay for themselves.

Seattle, WA. Tacoma, WA. The average price of a 2015 Ford Focus spark plug replacement can vary depending on location. Get a free detailed estimate for a spark plug replacement in your area from

2006-2008 Lincoln Mark LT. 2006-2008 Mercury Mountaineer. The Ford Spark Plug Lawsuit seeks compensation for out-of-pocket expenditures associated with the spark plug replacement, deductibles paid when repairs were covered under warranty, depreciation in the value of the affected vehicles, economic losses, attorney’s fees, interest, and court

This is a great option for any 2010 Ford Focus: Denso (4713) IT16TT Iridium TT Spark Plug, (Pack of 1) For any 2010 Ford Focus, you can use DENSO 4713 spark plugs. These will be an exact fit and will match the required specifications of your engine. As this 2010 Ford Focus features a 4 cylinder engine, ensure you purchase 4 spark plugs. uVTW. 423 457 262 325 268 184 268 270 447

ford focus spark plug problems