ride42
980MW
- Joined
- Jan 1, 2007
- Messages
- 4,506
Last Thursday my truck developed a major problem. Wednesday night it was running great and had no problems at all. I forgot to plug it in that night and so I was expecting a rough start up that morning, well the starter developed a hesitation in it while cranking and it needed more throttle input than usual. It was running rough but I wrote that off as to it being cold. I went inside for ten minutes to let it warm up and came back out with the idle still being rough and the truck not running well at all. Figured I would drive it and see if it acts like it throughout the power band. Nothing changed and around 60mph if I tried to accelerate it would only blow smoke and start running rough. I drove it to work and plugged it in the rest of the day. At 6:00 pm that night I started it again to get it home and it start running even more rough than before and needed throttle input to stay running. Shut it off and towed it home.
It's hard to explain what it is doing exactly but I will try. I started it up to get it into the garage to see what was up. Started it and the same story as before but a LOT worse. I threw it into drive and it started to smoke a combo of black and white with an almost brown haze thrown in as well.
Pump and engine are both at TDC so timing should still be correct at 24° (pump was pin timed at 24° when on the bench in the Fall)
Checked the valve lash because of the popping noises and it is within spec.
As far as I can tell no springs are broken and the push rods seem to be straight but I am going to put it back together and run it without the valve covers just to make sure.
Injectors are pulled and the nozzles seem to be in good condition with no melting marks on them.
Checked coolant and oil and no case of one in the other so I am assuming the head gasket is still good.
I have a question as to what would happen if gas was present in the fuel? I have filled up at the same fuel pump that I have the last two years and never had a problem with it before but I'm not sure that's where it came from if it is present. The injection lines have a hint of gas and so does the fuel tank..there are a few people here that would pull this sort of prank so just to be sure I am going to siphon out the remaining fuel and check it out then fill the tank back up with clean diesel.
Anyone else have any ideas for me to check out? I can't think of why it's doing this unless the pump just went out of phase and took a dump or what but I find that hard to believe due to how well it has run the past couple of weeks, but they always run the best right before they kill over right?
Any help would be appreciated.
It's hard to explain what it is doing exactly but I will try. I started it up to get it into the garage to see what was up. Started it and the same story as before but a LOT worse. I threw it into drive and it started to smoke a combo of black and white with an almost brown haze thrown in as well.
Pump and engine are both at TDC so timing should still be correct at 24° (pump was pin timed at 24° when on the bench in the Fall)
Checked the valve lash because of the popping noises and it is within spec.
As far as I can tell no springs are broken and the push rods seem to be straight but I am going to put it back together and run it without the valve covers just to make sure.
Injectors are pulled and the nozzles seem to be in good condition with no melting marks on them.
Checked coolant and oil and no case of one in the other so I am assuming the head gasket is still good.
I have a question as to what would happen if gas was present in the fuel? I have filled up at the same fuel pump that I have the last two years and never had a problem with it before but I'm not sure that's where it came from if it is present. The injection lines have a hint of gas and so does the fuel tank..there are a few people here that would pull this sort of prank so just to be sure I am going to siphon out the remaining fuel and check it out then fill the tank back up with clean diesel.
Anyone else have any ideas for me to check out? I can't think of why it's doing this unless the pump just went out of phase and took a dump or what but I find that hard to believe due to how well it has run the past couple of weeks, but they always run the best right before they kill over right?
Any help would be appreciated.