Running Lean - I think

[FastWoman]

Bhermes, just to be clear, a vacuum reading won't tell you whether you have a vacuum leak, popular expectations to the contrary. For instance, you could have a bad coolant temp sensor, causing your engine to run rich. This by itself could cause your vacuum to be low/weak. Then you could open up a big vacuum leak that would compensate for the richness, and that would cause the engine vacuum to strengthen. Engine vacuum is more an indicator of engine running efficiency than anything else. If everything is right with the engine, your vacuum will be somewhere in the 17-20 range, depending on compression/wear.

As mentioned above, my proprietary, patented "yogurt cup test" will tell you whether you have any vacuum leaks. It's very easy to perform.

I'm not understanding about the sending unit either. It's just an arm with a float in the fuel tank. There's no pickup tube. Surely he's referring to another part.

[bhermes]

Thanks and kind of understand what you are getting at. I will be doing the following two days after x-mas.

- trying to determine what rpm's the car is actually running (runs best with gauge at 1100 rpms)

- checking fuel pressure at variuos rpms

- Performing yogurt cup test

- and checking vacumm pressure for good measure

I will report what I find. I am leaning toward the need for a new fuel pump or at least find the screen and clean out and possibly an issue with my fpr. I hope I can test and eleminate or prove these two parts first. I do have an issue also with the boot at the AFM.