State emmissions test failure

[kjohn]

Hello All,

I have a 91 silverado, performed tune up cap, rotor, plugs, wires pvc, air filter, oil filter & oil.

I fail the Hydro carbon test the limit is 2.00 g.p.m I come in at 2.325 gpm, any ideas what I can do to pass this test?

Any help is appreciated.

kjohn

[mjgjr72]

try some high tes and some of the emmissions in a bottle shit or dry gas

[stubbornmike]

have you changed your o2 sensor?? that would drop your gpm enough to pass!

[lovemytruck]

i have to ask why do you have to pass emisions with a 91 emisions started with OBD 2 91 was still OBD 1.. just curious
Chris