Hi Scotty, been watching your videos for along time now, and I have a lot of appreciation for what you do. 

My question is I have a P0300 misfire code, I have done a compression test and the front drivers side cylinder has no compression. I have done a leak down test and the air is leaking out the intake manifold. I'm wondering is there anything I can try to fix this without taking the top of the motor off for a performing a complete valve job. I am assuming it is probably a burnt valve or deposits on the valve. 

I'd like to thank you in advance for taking the time to read my question and will be very grateful to any suggestions you may have. 

Thanks,

Jason from San Diego CA....