[trivers]

What else should I replace/adjust it seams to be running really rich you can smell it pretty bad at idle. So far I replaced fuel filter, plugs, wires, cap, rotor, O2 sensor. It is a 1993 k1500 suburban, that had been sitting for a year with bad tranny when I got it. So I just need to know where to go next?

 

[homer911]

It could be your fuel pressure regulator or IAC. Un plug IAC and see if it clears up at all

 

[fschevy1988]

i would check the timing, and the injector pods to see if they are spraying heavy

 

[trivers]

Is the timing adjustable on a 1993?

 

[unplugged]

Is the timing adjustable on a 1993?

The 96 & up with SFI are not adjustable. To adjust the timing on the 93, first bypass the EST system by unplugging the tan/black wire that is located under the relay cover underhood on the passenger side firewall. Then loosen the distributor and set the timing to spec with a timing light.

 

[trivers]

what is the spec for timing in the Chilton it just has a circled 1?

 

[trivers]

Ok now since the book is useless. What it the correct pointer for BTDC? I am assuming the slightly larger pointer that is closest to the drivers side? currently it is in the valley right after.

 

[unplugged]

what is the spec for timing in the Chilton it just has a circled 1?

Haynes specs the timing as TDC, unless the smog label underhood has a different spec.