Can someone please take a look at my data master file? I am having some serious problems with my car at WOT I smell something burning out the exhaust and the car feels like its lost 100hp has the biggest delay when I step on it. I have new opti plug wires sparkplugs coil icm and pretty much same results my head gasket is leaking some oil on the driver side not to bad though but my car smells like fuel I hear ticking I’ve adjusted rockers and all I have even replaced all my valve springs with stronger ones from Loyed.

I am seriously ready to blow this car up. My oil pressure is perfect my coolant never leaks my gas pressure is good. the only thing I worry about is when I took my timing cover off last year my timing chain seemed very loose I was not sure if it skipped a tooth or not. Anyone have any ideas I am almost out of them. here is the link to my data master file

http://www.filedropper.com/95z28

Car has 168k miles

 

You think your head gasket is leaking and you don't know what the problem could be? Here's your sign

Your data file is in some format (uni) I can't deal with. But beside that fact, no one needs to look at it any way based on what you are describing.

You need to identify if there are any dead cylinders. Then you need to do a compression test and a leak down test.

 

.uni is the DataMaster file extension. If he want everyone to be able to view the file using Excel, he has to export the file from DataMaster in .csv format.

 

How can you tell if there is a dead cylinder?

 

I dunno if it means anything but since I can look at this file, i downloaded it and opened it. Anywho i think 7x during his run the injectors read 0.00 which to me means for whatever reason they stopped running for a couple of second right??

 

You pull off one injector clip at a time and note if the engine runs differently. If you pull a clip off and it does NOT run differently, that is a dead cylinder.

 

The PCM shuts down the injectors when the throttle closes above a certain RPM, and the VSS is indicating the car is moving. It doesn't want to dump raw fuel on the cat, or waste fuel that isn't being used. You will notice that's what is happening, if you look at the TP%, which is 0 at the same time. Note that the ignition advance also drops to about 10-deg when the throttle closes above a certain RPM.

The things that I noticed in the file is even though he has a 100kPa barometer, his idle MAP is 40-41kPA..... a bit on the high side. The injectors pulse width (both sides) is above 4mSec at idle, even though the MAF AFGS is less than 10. The long terms look decent, everything else looks OK. But, its running on the cool side, about 174*F. That may be too cool. It doesn't even reach the point where the target idle RPM is 550. Note that the target idle RPM drops very slowly as it slowly warms up.... but it never reaches 550. Unless the programmer altered the idle speed, but there's no reason to do that with a stock engine.

 

This site if full of info

Ill be a paying member soon, I like it. As many times as Ive had my cars issues diagnosed & worked out here!!

 

I don't see that you have any knock counts during the run so it isn't pulling any timing.

The idle request seems to be very low... is that on purpose? I think the stock idle for an auto is like 600 or 650.

If he has a 160* thermo then the engine temp is probably on purpose. I run the same.


Can we get an idea on what mods you have?

 

Stock idle programming, fully warmed up for the A4 is 550rpm in drive, 650rpm in neutral.

 

ah Thank you for clarifying