I just need some idea's to trouble shoot! The test came back with the Hydrocarbons at 2.18 and standard is 0.80 The carbon monoxide reading was 54.60 and standard is 12.00. I was thinking that maybe a fuel injector may be bad, but i'm not a pro. Please advise ASAP

p.s. the vehicle is a 95 S-600
Franco
619-861-2888