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Misfire but no error codes?

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turborebel

15+ Year Contributor
135
1
Nov 26, 2006
fredericksburg, Texas
What is causing a intermitent misfire without showing an error code the pocket logger?
It will mis mostly with load and boost but not always. I,ve repalced the computer, maf, plug wires, transistor igniter pack, ignition pack is new [less than 3000miles]. Can my logs tell me somthing I'm missing? A Wise Man may be needed.
 
No, the plugs have less than 3,000 miles on them[NGK]. When I checked the after this problem started they looked healthy enough. I have now also replaced the injector resitor pack on the fire wall.
 
What kind of plug wires? (so so or high qualty) I got some cheepo ones once and ended up with a bigger problem than I started with.:cry: I chased my tail for a month before I got some high priced units and the problem went away.:thumb:
 
When the problem started the wires were new KV85s. I changed them out for cheaper ones that I knew did not have a problem.
 
It was the spark plugs. NGKs with less than 3000 miles on them. One is defective. Since I've changed plugs it dosen't mis at all. Thanks 16gpoweredgsx.
 
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