  Magnetotransport and magneto-optics experiments offer a very powerful probe
for studying the physical properties of materials. Here, we investigate the
second-order nonlinear magnetoconductivity of tilted type-I Weyl and multi-Weyl
semimetal. In contrast to the presence of chiral anomaly in the linear response
regime, we show that Weyl semimetal do not host chiral charge pumping in the
nonlinear transport regime. We predict that an inversion symmetry broken and
tilted Weyl semimetal can support finite longitudinal nonlinear
magnetoconductivity, which is otherwise absent in untilted Weyl semimetal. The
nonlinear magnetoconductivity vanishes in the ultra-quantum limit, oscillates
in the intermediate magnetic field regime and saturates in the semiclassical
limit. The nonlinear magnetoconductivity depends intricately on the tilt
orientation, and it can be used to determine the tilt orientation in Weyl and
multi-Weyl semimetals, via nonlinear magnetoresistivity or second harmonic
generation experiments.
