▁ 1 3 ▁as ▁they ▁ex ited ▁the ▁right - hand er ▁before ▁the ▁p its . ▁For ▁the ▁next ▁ 1 8 ▁la ps , ▁Clark ▁contin ually ▁drew ▁away ▁from ▁Sur te es . ▁G ur ney ▁passed ▁Sp ence ▁to ▁purs ue ▁Hill ▁for ▁third ▁place , ▁until ▁Hill ▁moved ▁into ▁second ▁place ▁by ▁getting ▁around ▁Sur te es ▁on ▁lap ▁ 3 1 . ▁ ▁On ▁lap ▁ 4 0 , ▁Clark ' s ▁Lot us ▁began ▁to ▁mis fire ▁as ▁a ▁result ▁of ▁a ▁fuel ▁injection ▁problem . ▁Sur te es , ▁then ▁Hill ▁and ▁G ur ney , ▁went ▁by ▁before ▁he ▁entered ▁the ▁p its ▁on ▁lap ▁ 4 4 . ▁The ▁crew ▁spent ▁two ▁la ps ▁adjust ing ▁the ▁injection ▁system , ▁and ▁he ▁rejo ined ▁in ▁next ▁to ▁last ▁spot , ▁but ▁stopped ▁again ▁after ▁only ▁six ▁la ps . ▁Chap man ▁called ▁team mate ▁Sp ence ▁in ▁from ▁fourth ▁place ▁and ▁replaced ▁him ▁with ▁Clark , ▁in ▁the ▁hopes ▁that ▁Clark ▁could ▁get ▁ahead ▁of ▁Hill ▁and ▁Sur te es ▁and ▁reduce ▁the ▁number ▁of ▁points ▁they ▁could ▁ear n . ▁Sp ence ▁continued ▁in ▁Clark ' s ▁car , ▁but ▁retired ▁it ▁after ▁five ▁more ▁la ps . ▁ ▁Meanwhile , ▁Hill ▁had ▁taken ▁the ▁lead ▁back ▁from ▁Sur te es ▁on ▁lap ▁ 4 5 . ▁When ▁the ▁leaders ▁came ▁up ▁to ▁lap ▁Hill ' s ▁team mate , ▁American ▁Rich ie ▁G in ther , ▁on ▁lap ▁ 6 1