Engine/Transmission (1994 - 1998) Boost gauge, how to read

[tfrane]

Just installed boost gage, what should I be looking for now, besides trouble scenario's situations. How should I be driving util

izing the gauge.



Thanks

Tim

 

[ronco]

tfrane, boost is pretty much a product of engine load/fueling rate. In a nutshell. There are a lot of factors on boost levels, but basically, fuel =boost. Now, get some baseline numbers based on your local driving area and normal loads and make notes. Then, if over time your boost decreases, you should looks for causes like a dirty air filter or exhaust restrictions. If you have an EGT, you can use them in conjunction. If your fueling rate decreases, your boost will also decrease, which can be seen with a decrease in EGT. If your EGT gets hotter, but the boost drops, you have an intake/exhaust restriction. They are directly related for the most part. I'll bet the most knowledgeable people here could write a small book on the two items I briefly mentioned in this paragraph.



Note your boost at interstate speeds on level ground. This is your maximum economical boost/fueling point. As you go uphill (more engine load) the fuel rate must increase to keep vehicle speed up and boost will also climb. As you drive faster, boost also increases. This can help you on long trips if fuel consumption is a concern. If you keep your boost below the level noted in the beginning, you will have max. economy also around town. Personally, that's not fun for me! I have to let my horses run sometimes! If you are towing a large trailer with high wind resistance, you will see high boost numbers for moderate speeds. If you meet a strong headwind towing large, your boost will easily max out and you will know it by reading the gauge.



Your boost gauge will only read boost in pounds and nothing else. Like any tool, you must take the time to educate yourself to know how to interpret what your boost gauge is telling you. Then you will be a better operator, IMHO.



If I have missed something or said something wrong, anyone please chime in.



Ronco

 

[Rhondasway]

Ronco, nice reply! Just one more little thing: if your boost is lower than normal, you could have a boost leak. Check your clamps, your intake plate (on the head), and even your boost gauge fitting itself (I've had a leak there). You can check by spraying a little soapy water at seams while idling...

 

[tfrane]

Thanks for the tech. help, it's what I was looking for.

Tim