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Discussion Starter · #1 ·
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?
 

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

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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.
 

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Discussion Starter · #7 ·
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.
 

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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.
 
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