Recent content by Luke_IDI
-
Vegetable Oil Off The Shelf
Thanks for the responses guys. It seems like fuel lubricity isn’t really an issue as long as you’re getting some percentage of biodiesel at the pump. I’m a pretty infrequent user of this IDI and still relatively new to it. I’ll take a closer look at the pumps and not worry too much about it!- Luke_IDI
- Post #5
- Forum: Diesel Additives, Oils, Lubricants, Fuel, etc.
-
Vegetable Oil Off The Shelf
A while ago I came across this lubricity study, which I guess has become rather famous in these circles: https://www.dieselplace.com/threads/lubricity-additive-study-results.177728/ Interesting that the winner by a considerable margin is soy biodiesel. The sole diesel engine I use currently...- Luke_IDI
- Thread
- Replies: 4
- Forum: Diesel Additives, Oils, Lubricants, Fuel, etc.
-
Slow crank after possible overheat
Thanks for the ebay link guys. The pictures are all the same as the Amazon listing I bought from except for the last picture, which warns that other sellers have plagiarized his instructions while selling the wrong tool. Looks like I fell victim to the counterfeiting scam. I left a bad review...- Luke_IDI
- Post #73
- Forum: 7.3L Powerstroke Diesels
-
Slow crank after possible overheat
I’m happy to report that I got the truck running today. After cleaning all of the debris off of the solenoids, a buzz test showed only 5 of 8 injectors buzzing strong. I measured clearance on a couple of injectors and found them at the very bottom end of spec or below spec, so I decided to...- Luke_IDI
- Post #70
- Forum: 7.3L Powerstroke Diesels
-
Slow crank after possible overheat
I have a better update than the last. I found some videos over the weekend suggesting that injectors whose armature to poppet body clearance has fallen below spec due to wear sometimes have stiction issues due to the oil in that small gap creating a suction effect which the magnetic force of the...- Luke_IDI
- Post #62
- Forum: 7.3L Powerstroke Diesels
-
Slow crank after possible overheat
Ok, I figured out why I am only seeing 50v. Looked in the manual for the scope and max input voltage is +/-5v. Using a 10:1 attenuator probe, that means I am just seeing maximum voltage. I ordered another attenuator to put in series. Stay tuned for what voltage looks like accurately measured!- Luke_IDI
- Post #61
- Forum: 7.3L Powerstroke Diesels
-
Slow crank after possible overheat
I repeated the buzz test today. I wanted to make doubly sure that the injectors have enough voltage to fire. I unplugged the number 8 injector connector and inserted pins into the plug. It’s pretty tight to try to backprobe a high voltage wire there without touching the pins together. While...- Luke_IDI
- Post #60
- Forum: 7.3L Powerstroke Diesels
-
Slow crank after possible overheat
Truck has about 200,000 miles on it. I have zero clue about what maintenance was performed on the truck. Possibly not much, if the oil sludge that came out of it is any indication. I will try the other IDM I have and redo the buzz test.- Luke_IDI
- Post #59
- Forum: 7.3L Powerstroke Diesels
-
Slow crank after possible overheat
I do not have a good injector, could possibly get one but that would require pulling one out of a friend’s van. I’d prefer not to have to do this but I will keep the suggestion in mind. It has been very warm here too. Some days when we tried to start it it was close to 100 degrees. Also tried a...- Luke_IDI
- Post #58
- Forum: 7.3L Powerstroke Diesels
-
Slow crank after possible overheat
The guy in this example says that with a buzz this quiet, the truck will not start cold at all—the block heater must be plugged in to get it to fire. I am thinking the injectors in my buzz test sounded more like the bad test in that video. I think a next easy test to do would be to pop the...- Luke_IDI
- Post #54
- Forum: 7.3L Powerstroke Diesels
-
Slow crank after possible overheat
The injectors all sound very much alike, however I think they may be very quiet compared to a strong engine. I intended to do this test on my friend’s Powerstroke today as well, but his truck would not connect to the scan tool.- Luke_IDI
- Post #53
- Forum: 7.3L Powerstroke Diesels
-
Slow crank after possible overheat
I took a video of the injector buzz test today. This is with the valve covers off. It’s about 90 degrees today.- Luke_IDI
- Post #52
- Forum: 7.3L Powerstroke Diesels
-
Slow crank after possible overheat
I am checking the voltage at the injector connector, with the connector disconnected from the injector, positive probe on the white wire, negative probe on the black wire. The result I got was generally reminiscent of a +50v spike followed by -50v. The results were similar with both IDMs...- Luke_IDI
- Post #51
- Forum: 7.3L Powerstroke Diesels
-
Slow crank after possible overheat
I have not but that is first on my list of things to look at before looking at fuel supply further. The video you posted of where the oil comes out was very helpful. If I do not have oil at the injectors, given that I have good ICP and a good pulse from the IDM, would that indicate failed...- Luke_IDI
- Post #49
- Forum: 7.3L Powerstroke Diesels
-
Slow crank after possible overheat
After an improved compression test, numbers are up around 300 psi. Not great, but should be able to fire I imagine. The search continues. Going to start evaluating the fuel system for air.- Luke_IDI
- Post #47
- Forum: 7.3L Powerstroke Diesels
