Scotty I have a 1994 Mustang GT with a 302 Windsor. Every cold start it sounds like a chattering is coming from the valvetrain. I’m a student at a community college in a technical program trying to become a mechanic. What do you think of the situation? Oil pressure is normal

often worn lifters do that, try some rislone additive to clean them out first

Thanks Scotty. I’ll try that first before tearing the engine apart