shadpeters
05-17-2016, 06:55
So about a month I had an intermittent starting problem with my 85 m1008 (k30). It would occasionally sit there and crank and crank and just would absolutely not fire up. Well, I figured out that I had a bad glow plug relay, so I replaced that and it has been starting fine since... that is until yesterday. I went to go down the road and it started, ran rough for 5-10 seconds, and then when I tried to give it a little throttle to even it out it just died. After that I cranked and cranked and it would not even fire.
The difference is that a few days ago I installed a tiny tac on my truck so this time I that to keep an eye on. I believe the way that those work is that they use a transducer to detect the high pressure pulses traveling through the fuel lines from the injection pump. I know that the new tac works, because I have had the truck running a few times since installing it, and it was working when the truck initially started up and then died. However when I was sitting there cranking on it the tac just sat at zero.
This would seem to indicate to me that I don't have any fuel traveling through the the lines, otherwise It ought to show a couple hundred rpm when its turning over. Does that seem like sound logic? I have never had to work on the IP on one of these before, where should I start looking? I have an extra pump that came with the truck when I bought it, but I don't know for sure that its any good.
The difference is that a few days ago I installed a tiny tac on my truck so this time I that to keep an eye on. I believe the way that those work is that they use a transducer to detect the high pressure pulses traveling through the fuel lines from the injection pump. I know that the new tac works, because I have had the truck running a few times since installing it, and it was working when the truck initially started up and then died. However when I was sitting there cranking on it the tac just sat at zero.
This would seem to indicate to me that I don't have any fuel traveling through the the lines, otherwise It ought to show a couple hundred rpm when its turning over. Does that seem like sound logic? I have never had to work on the IP on one of these before, where should I start looking? I have an extra pump that came with the truck when I bought it, but I don't know for sure that its any good.