im kinda confused. on my 4x4 standard cab i got 3 out of the 4 zerks greased. for whatever reason, one will not take any grease. if 3 out of the 4 took the grease, it shouldnt be a problem with teh grease gun. i cleaned the hell out of the zerk fitting, it just won;t take the grease. it squirts out from the sides and just covers the outside of the zerk in grease. any ideas?
added info, the u-joints are a little more than a year old.