86 gmc saburban failed emissions

There isn't much a person can do at home when it comes to repairing a emissions failue there are HC failures where there is unburned fuel
There is CO which is incomplete combustion poosr compression, valve problems ect.
NOX Oxsides of nitrogen which is usually over heating engine or EGR
O2 (oxygen) leak in the exhaust
Oh yea evap emissions where the fuel vapors escape into the atmosphere through a .020" hole in the fuel vapor recovery system somwhere between the fuel ank and the engine compartment Oh god you need a smoke machine to find those.
Oh god I repair emission and its so damn hard fix one thing and another reading goes wackey
There is NO WAY without a 5 gas analyzer you can hit it Please trust me I know money is tight but take it to an emissions qualified shop and be done with it cheaper and less hassle, sorry just being honest really.Here in Seattle you will find nearly no old vehicles like yours due to emissions they cant be made to pass so off to the wrecking yard they go thats the goal of the emissions program get rid of the GROSS POLLUTERS and make people buy new cars. Thats our wonderful Goverment.
But in Japan you have to my law change our engine at 40,000 mi due to their emissions laws or junk the car.
give me your phone Number and I'll call you or heres my number 253-691-6206 and try to explain it
But if I provided any helpful advice please give me a good rating

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