The normal piston to cylinder wall clearance is from .003 to .008 of an inch (it can be less or more depending on engine, components, intended use etc). The piece that broke off would have to be very small and land perfectly for it to be wedged in this small gap. If you want, you could have a mechanic do a compression check on each cylinder. RepairPal tells us the three most common Ford Expedition problems are: TSB for possible ejection of the spark plug from cylinder head – reported by 180 owners. Ignition coil failure due to excessive spark plug gap – reported by 152 owners. Check engine light after hesitation or stalling – reported by 107 owners. The 2008 Ford Focus has 4 problems reported for blown out spark plug. Average failure mileage is 127,950 miles. CarComplaints.com : Car complaints, car problems and defect information Salt Lake City, UT. Washington, DC. Seattle, WA. Tacoma, WA. The average price of a 2009 Ford Focus spark plug replacement can vary depending on location. Get a free detailed estimate for a spark Was changing spark plugs a while back (Focus Mk2, 1.4) and noticed the second from left plug was tighter than the others. It didn't feel right so as there was no issues I just left the plug in. Now due to Covid I'm working from home and the car being off the road for a while wouldn't really affect me, so I had another go at lunch time there. Tacoma, WA. The average price of a 2013 Ford Focus ST spark plug replacement can vary depending on location. Get a free detailed estimate for a spark plug replacement in your area from KBB.com. 2002 and down PI heads have only 4 threads in the head. In 2003 the new heads cam with a full compliment of threads 3/4 inch reach plugs. I had the heads changed on my 2002 Lightning after one blew out at 60,000 mile original plugs. They had five vehicles in the dealer shop with plugs blown out 4.6's, 5.4's, and a v 10. The 1,0 mm gap was only prescribed by Ford for a short period. The prescribed spark plug gap for the Sigma engine family was changed back to 1,3 mm after the coil pack problems were solved and a revised coil pack was introduced. Afterwards the prescribed spark plug gap for the Sigma engine family was changed to 1,2 mm. This was over 8 Years ago. Vay Tiền Trả Góp 24 Tháng.

ford focus spark plug problems