Measuring Block 13

What is the data in block 13 telling you exactly? What range of values is acceptable?

-2.0 to +2.0.

Other say that if one of the values is much different from others, then you have a problem. I don't think so. My values are like those: -0.42 +0.38 +0.12 +1.68. All the cam lobes are in pristine condition, compression is good because the car starts immediately after key turn, returns acceptable fuel economy based on driving condidions, doesn't smoke, has got good power.

Not to be anal but its 2.8+-...if you put the cursor on the block an icon will pop up and display the normal range for that parameter...

In theory you are correct, yeah, but once you exceed the 2.0 barrier you are very likely to have a rough idle, at least.

You are right, I was just stating what the acceptable range was for the parameter..I have not seen over 1.0..Yours must have a limp to it..

I have 1.68 under a load as well.

What actually do you mean 'under a load'? Speed, RPM, gear, uphill, etc?

Henrick said:

What actually do you mean 'under a load'? Speed, RPM, gear, uphill, etc?

Click to expand...

While accelerating. I tried to log the data, but I have not looked at it yet. I'll post a graph if I can get anything useful out of it.

As far as I recall, you had some cam wear. That might be related to that. OTOH, I think those values mainly represent health of injectors...

IMO the group 13 displays the correction of the fuel injected quantity per cylinder per strike. The correction is done in order to equalize the rotation of the cam shaft.