This paper aims to determine first the effect of explicit instruction on the comprehension of implicatures in Spanish as a Second Language (SSL); second, whether there is a connection be-tween learners' grammatical accu-racy and their ability to understand such implicatures; and third, if there is a type of implicature which proves more difficult/problematic to acquire. The sample was formed by 23 participants, learn-ers of SSL. They were divided into 6 groups (3 experimental groups and 3 control groups) according to their competence level in Spanish. The 3 experimental groups partici-pated in a 30- minute-long explicit instruction session about implica-tures. Even though the statistics did not support the results, there was a slight improvement of the group with the highest competence level. This result is line with previ-ous studies showing that highest level learners profit more from ex-plicit instruction to interpret impli-catures.