no power under load + backfires - fuel pressure? ignition? sensors/ecu?

[xboxrox]

Cat converter partially plugged?

I've used CATACLEAN product at O'Reilly's ~ follow the directions exactly and it might give great results ~ my truck runs so much better after cleaning out all the carbon from carburetor to tip of tailpipe (kinda pricey stuff tho but worth it IMHO maybe use twice a year...)

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I've used CATACLEAN product at O'Reilly's ~ follow the directions exactly and it might give great results ~ my truck runs so much better after cleaning out all the carbon from carburetor to tip of tailpipe (kinda pricey stuff tho but worth it IMHO maybe use twice a year...)

also, thanks for this suggestion! i might as well try... assuming it also works for injected engines? when i opened the intake plenum, there was a little deposits in the intake but really not that bad, not enough to cause this as far as i can tell, but...