I carry one of these in my trunk, from Sears.
My current car has run flat tires and no spare. I’ve used the pump a few times to help me get through a slow leak, until I had time to take the car in for a new tire. I’ve also used the pump to help other people inflate their spare tire - no issues.
Spiderman:
After a debacle in holiday gifts one year work gave us a catalog to choose our own gift the following year. I opted for the cig lighter powered tire inflater. I was at home & checked my tire, it was a bit low so I pulled out & opened my “wonderful” new gift & attached it to the tire on my Integra (hardly the heaviest car). The pump was such a PoS that the chuck depressing the pin in the Schrader valve actually caused more air to come out of the tire than to go into it resulting in even lower pressure than when I started. :smack:
What kind do you have that really works?
The one made by Slerm or whatever that company is that shoots goo into your tire. Are you sure you put the pump on straight?