| As I continue to diagnose my lean AFR I'm testing what I can. I have a conzult and today I broke it out. MAF and TPS both look fine. It has been suggested that my injectors might be going. An ohm test yesterday suggests they pass that portion. I remembered conzult has a power balance test, so I used it. I realize a power balance test could indicate a number of problems, and not specifically injector issues. I did the test with the car warm and waited at least 30 seconds between each test. I tested 4 times. I am not sure if I should be concerned with the results, but I sort of feel like "maybe". I guess I have two questions: 1) Is it "normal" for the rpm drop to vary so much on the same cylinder between tests?
2) Should I consider a cylinder suspect if the rpm drop is low occasionally, or only if it's low consistently (for some definition of "consistently")? Here are my numbers. First column is cylinder number. Second is test #1 rpm drop, third is test #2, etc, last column is total variance over the 4 test for that row's cylinder. You'll notice 1, 4, and 6 look the most sketchy in terms of low rpm drops, though the variance on 6 isn't as far off as on 1 and 4. If that even means anything. 1 175 188 312 238 137
2 250 238 262 225 37
3 238 200 225 250 50
4 150 212 375 262 225
5 288 238 238 312 74
6 212 150 188 238 88 Thanks.
Andy
|
