fuel pressure

[Tommyg]

I set the fuel pressure at 43lbs as was suggested but it now reads 36. What could have caused the change?

 

[V6POWER]

Was the 43 with the hose to fpr disconnected? If so, it will drop when you put the hose back on.

 

[BRAD_PADGETT]

TommyG- Based on your question and your signature it appears you tuning "BLIND". This means you do not have a scan tool. Adjusting fuel pressure on a good engine is used to get the BLM number to 128. This will make a difference in how the engine performs. Just a few cents. Brad

 

[Tommyg]

???????

Brad, I do have a scanmaster but just now learning how to use it. I did have the vacuume line off and set it at 43. I now realize that eith it on it drops to 38 or so. (dummy) Thanks for the help. Tommy :redface:

 

[BRAD_PADGETT]

Tommy- Adjust your fuel pressure in order to get your BLM to 128 at idle in gear. If your BLM is at 140-raise fuel pressure. If it is at 110-lower fuel pressure. Let the computer learn the settings before adjusting again. Once you get to 128 you will feel a difference. Brad