When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Two put them back in I used a small hose. Stuff the spark plug in the hose a bit and twist it in place. When you feel it in the threads turn it until it goes not further. Then just tug the hose off the plug.