I have a Paslode Impulse angled finish nailer and lately it has been acting funny and misfiring. I have taken it apart and cleaned and oiled it and, it did not help.
I called the local service center and he asked me how old the fuel cells are?
Come to find out they have a date on the bottom of each cell.

They said best if used by this time last year?
He said they have some type of air bag in the cells and they usually burst after 18 months or so.
I'm quite sure that is the problem I need to buy some new fuel cells to make certain.
I just thought this might help someone out .