Originally Posted by
beano
thought it was a big no-no to put oil in the cylinder? my 2.2 innova sometimes looses the first pump but find sometimes if you flick the trigger before pumping this sometimes stops this happening.it's 30 years since i took mine apart cos of this problem, and if i remember right there was a metal block above the trigger where a small piston released into an hole in the block for the air to release.there was a rubber o ring where the piston went in and would sometimes stick so stopping the piston returning back into position.me i put a pellet in the hole so the piston would hit and hopefully go back - which it did and it's still working today?? more luck than judement me thinks....