Awright ~ I know this is a dumb question http://www.dieselplace.com/forum/smileys/Embarrased.gif but, worth it to me to ask.


When/how to read the air filter gizmo. Need the eng be running? Appears to be spring loaded indicating perhaps the eng shud be running to get an accurate reading?Edited by: ShumDit

If it becomes restricted the indicator will show a percentage of restriction. It will stay there until you reset it. I would think most replace their air filter long before the restriction guage would show restriction.

It doesn't have to be running. The vacuum pulls against the spring. The more vacuum, the further the spring is compressed, pulling the indicator in further and further untill you get to the red zone or bottom it out. It's kind of one way. It won't go back down untill you press the red release button on the end of the indicator.


You need much more air at WOT under load. I can only think of two ways to check it under load at WOT. (If the engine had to be running to check it.) 1 - Run it on a dyno and watch it. 2 - Remove the hood, hook up a heavy trailer, climb onto the engine and have your wife floor it up a long steep hill on the Interstate and see what it does.http://www.dieselplace.com/forum/smileys/Big Smile.gif


SteveEdited by: YZF1R

ShumDit: I'm only rassing you a little. There are no dumb questions. Actually, the more I think about it, the neater it would be. You could really feel and hear all the power and sounds your engine is making. I guess a dyno like JK has would work too, just not as much fun.


I've never seen mine move and as Max Power said, most people change theirs before it shows anything anyway.


Steve

I usually throw it in the trash so the dogs at the parish dump can read it. By the time them things move you are on your last leg if you haven't sucked in your filter allready. If you want something reliable that wont leak dust into your engine after the seal drys out, get a gauge that reads in inches of water column and mount it on the box or in the cab using 1/8" poly tubing. Base line it with a clean filter then change or clean the filter at the desired restriction. Total cost = about $25.....http://www.dieselplace.com/forum/smileys/Big Smile.gif Edited by: a bear

YZF1R ~ just when I was taking you serious http://www.dieselplace.com/forum/smileys/Ermm.gif I better go out and have the missus climb out of the compartment http://www.dieselplace.com/forum/smileys/Embarrased.gif


bear ~ capital idea. Guess I'll need to go out and look at it again ~

http://www.dieselplace.com/forum/smileys/Clap.gif


Steve

If it becomes restricted the indicator will show a percentage of restriction. It will stay there until you reset it. I would think most replace their air filter long before the restriction guage would show restriction.


I can go about 1500 miles and it will be completly over in the red!! Has happened several times now already.
This has got to be the sorriest set up for an air filter intake! It's one of the few things I hate about this truck.
Yes, I farm and drive on dirt roads a lot. No excuse. The old 6.5's and 6.2's never had this bad of a problem. Neither did my 454 although it wasn't all that good. It got dirty pretty quick too.

They probably aren't too accurate. That spring in there didn't come from NASA.


Steve

Yeah, we know how accurate low bid government contractors are on accuracy.