Codes P0171 and P0174

[Jamesp]

Thanks for your reply JFP. I used time instead of a gauge. If the system holds a low vacuum for a full 30 seconds my sense is any leak is less than a pinhole. I think I'll go check it for a full minute though. I did listen for a hiss as well and did not hear one. I bought a plastic vacuum pump similar to the one you show to bleed the clutch as it was marketed for use in brake jobs. It would have been a better tool if it was compatible with brake fluid.

[JFP in PA]

Originally Posted by Jamesp

Thanks for your reply JFP. I used time instead of a gauge. If the system holds a low vacuum for a full 30 seconds my sense is any leak is less than a pinhole. I think I'll go check it for a full minute though. I did listen for a hiss as well and did not hear one. I bought a plastic vacuum pump similar to the one you show to bleed the clutch as it was marketed for use in brake jobs. It would have been a better tool if it was compatible with brake fluid.

I don't care for vacuum brake bleeding tools at all, I prefer the pressure style like the Motive system because it pushes clean fluid downward and through the system without any chance of pulling air in, which a vacuum system can quickly do.

[Jamesp]

Originally Posted by JFP in PA

I don't care for vacuum brake bleeding tools at all, I prefer the pressure style like the Motive system because it pushes clean fluid downward and through the system without any chance of pulling air in, which a vacuum system can quickly do.

I'll pick up a pressure system next time I'm messing with the hydraulic system. Put everything back together and working on getting through a driving cycle. I think it was a poor seal between a rubber seal and a plastic tube on the manifold. A rookie mistake, but I have an excuse. With luck, it's good to go.