Just picked up a 97 Suburban. Many issues, first thing I have to take care of is the blinking/on check engine light. P0308: cylinder 8 misfire. You can really feel it, especially at idle. I'd say it's a dead miss (as in, it feels like that cylinder is doing nothing)...
Anyway, guy I bought it off of says his mechanic did a tune up and it didn't help, and thinks the problem is the valve adjustment.
I'm going to do a compression test on Monday, to see if the problem really is mechanical. If it is, any idea whether a misfire could be caused by a valve adjustment problem, and if so, I've never adjusted valves before... if compression is fine then that rules out the valves, right, and I should focus on fuel or spark.
Thanks for any input!
Anyway, guy I bought it off of says his mechanic did a tune up and it didn't help, and thinks the problem is the valve adjustment.
I'm going to do a compression test on Monday, to see if the problem really is mechanical. If it is, any idea whether a misfire could be caused by a valve adjustment problem, and if so, I've never adjusted valves before... if compression is fine then that rules out the valves, right, and I should focus on fuel or spark.
Thanks for any input!
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