npauli
10-30-2010, 19:55
Please check my diagnosis here and tell me if I'm on the right track or need to look at something else.
Symptoms:
fuel in oil (last test showed 6% at 3k miles). It's nothing catastrophic, but getting steadily worse
balance rates not too bad. #6 was 3.9, others within +/- 2
bit more diesel smell than I remember
no performance complaints
Tried today to test return flow as spelled out in the shop manual. I just got to the point where I'm measuring fuel from the main return quick disconnect with the injection pump return dumping into a bottle. The manual says I should get at least 35 mL after 15 sec, but I'm getting more like 10mL.
The cranking speed wasn't quite as high as its supposed to be though - they wanted 150 rpm and it fluctuated between 130 and 150.
At this point I'll probably do the following:
1) Try the test again tomorrow w/ some time charging the batteries and plugging in the oilpan heater to get the rpm's up.
2) If I get the same result, put the truck back together so I can drive to work monday. (i.e. I won't continue testing to find flow out of each head)
3) Borrow a Tech 2 to command 160 MPa and see what I get. If the actual pressure is low, would that confirm the pump is bad?
I'd love to have any advice you may have.
Symptoms:
fuel in oil (last test showed 6% at 3k miles). It's nothing catastrophic, but getting steadily worse
balance rates not too bad. #6 was 3.9, others within +/- 2
bit more diesel smell than I remember
no performance complaints
Tried today to test return flow as spelled out in the shop manual. I just got to the point where I'm measuring fuel from the main return quick disconnect with the injection pump return dumping into a bottle. The manual says I should get at least 35 mL after 15 sec, but I'm getting more like 10mL.
The cranking speed wasn't quite as high as its supposed to be though - they wanted 150 rpm and it fluctuated between 130 and 150.
At this point I'll probably do the following:
1) Try the test again tomorrow w/ some time charging the batteries and plugging in the oilpan heater to get the rpm's up.
2) If I get the same result, put the truck back together so I can drive to work monday. (i.e. I won't continue testing to find flow out of each head)
3) Borrow a Tech 2 to command 160 MPa and see what I get. If the actual pressure is low, would that confirm the pump is bad?
I'd love to have any advice you may have.