Hi All,

I was thinking that I could use the WPS or the “Brandon Look” to check for blow by with the engine running and maybe by syncing to a cylinder then be able to see and identify any cylinder with too much.

Will this method work?

Do my thoughts have any merits or flaws?

Has anybody tried this?

If you did try it, what where your results or conclusions?

Thanks,

dave

Hi Dave
You should disconnect the PCV valve when you can.

This file is the same vehicle with the Firstlook in the exhaust & partially covered tailpipe  "Brandon style" 

Brad

crackerclicker....i was quizing him about this too..... have you ever scoped a early 90's chevy pu the regular way with the deal just stuck in the tailpipe? you wont see negative pulses but you will see positive ones and its hard to tell if its a miss or not...this is what drove me nuts to create new ways of doing exhaust pulse diag...i think he didnt do the paper thing right is what happened..... now on regular pulses that go downward on missfires you'll also see them go high in the positive direction because its a pressure change sensor, think of it as not seeing the negative pulse but seeing the positive return of it....does that make any sense

no its a deal with both more so with the firstlook than mine, as the firstlook is slightly more sensitive in a bad way compaired to my sensor....  i have one of these at the shop we just did heads on if you want me to show you..... about 5-6 years ago when i got my firstlook i could make it work on any car but with pickup trucks it flatout wouldnt give me a negative pulse so i got used to it for awhile until i thougt about the dynamics and came up with a solution