captflash
Old and Bold
- Joined
- May 10, 2009
- Messages
- 479
I've been chasing a knock situation for a while now at I'm at a loss. New walbro fuel pump, new fuel filter, new ac delco O2 sensor, new maf. Knock doesn't come in until 3000+ rpms but it shows up without fail. I've checked the fuel pressure, it gives 1:1. Set at 38lbs with the line off, 43-44 with the line on. I tried adding fuel on the chip , ramping up the alky as per julios instructions from his tuning the alky kit and still KNOCK!!!! Sometimes it comes on slowly, 1.1-4.+ at about 95 mph, at other times it will be 0.0 then the next reading is 7.8. I welcome any help or suggestions and I thank you kindly in advance.