  Elastic deformations (strain) couple to the electronic degrees of freedom in
Weyl semimetals as an axial magnetic field (chiral gauge field), which in turn
affects their impurity dominated diffusive transport. Here we study the
longitudinal magnetoconductance (LMC) in the presence of strain, Weyl cone
tilt, and finite intervalley scattering, taking into account the momentum
dependence of the scattering processes (both internode and intranode), as well
as charge conservation. We show that strain induced chiral gauge field results
in `strong sign-reversal' of the LMC, which is characterized by the reversal of
orientation of the magnetoconductance parabola with respect to the magnetic
field. On the other hand, external magnetic field results in `strong
sign-reversal', only for sufficiently strong intervalley scattering. When both
external and chiral gauge fields are present, we observe both strong and weak
sign-reversal, where in the case of weak sign-reversal, the rise and fall of
magnetoconductivity depends on the direction of the magnetic field and/or the
chiral gauge field, and is not correlated with the orientation of the LMC
parabola. The combination of the two fields is shown to generate striking
features in the LMC phase diagram as a function of various parameters such as
tilt, strain, and intervalley scattering. We also study the effect of strain
induced chiral gauge field on the planar Hall conductance and highlight its
distinct features that can be probed experimentally.
