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Last week started my truck and noticed some white smoke after idling for a few minutes while loading it up. It was a pretty small amount of smoke. Didn't have time then but the next day I warmed it up and the smoke went away and just figured it was water vapor in the exhaust.
Seems like I've been noticing a stronger diesel smell but also I'm not the best judge of that. I've read that unburned fuel is more noticeable on a cold engine so I'm trying figure if I have one or more leaking injectors.
Oil level checked ok. Did not smell like diesel to me. Coolant has not needed filling either.
Stiction for a long time, but I've kept it in check with revx and other things. Original injectors with 198k on them. I haven't done the balloon test yet but I'm pretty sure it will fail and just trying to figure out which injectors to get. At this point I'd rather just replace all of them if I'm going to do it. Hopefully I can test that later today.
Trying to decide between 155 or stock. Truck is mainly used for towing and just want reliability but a little more power wouldn't hurt.
>>>Last week started my truck and noticed some white smoke after idling for a few minutes while loading it up. It was a pretty small amount of smoke. Didn't have time then but the next day I warmed it up and the smoke went away and just figured it was water vapor in the exhaust.
I'll check the EGR valve, guess I could put a new one in. If it makes a difference, the current ypipe only sends exhaust to the turbo. Also only noticing this after it's been running a few minutes.
No bubbles at the fuel bowl. Pulled the EGR valve, bottom oring was split. Could have happened installing or removing not sure. Got a new egr valve. Drove about 10 miles on it and it felt unexpectedly better. Also watched for smoke after starting and didn't see any. Check again in the morning.
Here's a picture of the EGR valve
Installed 4k miles ago
Still going to look into new injectors. I like the idea of going with the Pure Power ones, basically good as new with updates. Looks like I dodged it for now but soon enough who knows. Wouldn't hurt to check the turbo too.
Appreciate the help, never would have thought egr valve
So, even with a welded plug in the Y-pipe, a leak in the (weak) EGR cooler could allow coolant to reach the EGR valve. I have never counted on EGR valves to be capable of being completely closed (leak free) even when commanded closed.
Just to be thorough I pressure tested the EGR cooler when it was out 4k miles ago. Only took it to 40psi but there were no leaks at that time. Did that before touching the heads and since then there has been no exhaust going through it.
I was surprised to see the EGR valve a little wet and thinking it was just oil residue from ccv / intercooler over the years. Coolant level has not changed.
All that I am saying is this - if the y-pipe block-off plate is solid, and the EGR cooler isn't leaking, then I don't see how the EGR valve itself can make any difference.....one way or the other. Afterall, the EGR valve's purpose is simply to regulate the flow of exhaust gas evenly to both sides of the engine (intake manifold).
This guy was right behind me at a stoplight this morning. I looked in the mirror and saw a bunch of smoke and thought it was my truck for a split second. Not a good feeling on a test drive lol
All that I am saying is this - if the y-pipe block-off plate is solid, and the EGR cooler isn't leaking, then I don't see how the EGR valve itself can make any difference.....one way or the other. Afterall, the EGR valve's purpose is simply to regulate the flow of exhaust gas evenly to both sides of the engine (intake manifold).
Yeah I agree should not have made a difference. Maybe I got a leak at one of the egr cooler sealing surfaces. Maybe I'm imagining the difference. Hard to tell sometimes. I can tell you one thing for certain the ypipe is solid.
Seems there's no issues with the injectors leaking. I'm genuinely interested to find out when I replace the injectors some day if I should use stock or 155 (plugged ports) and having a hard time finding info on how beneficial they really are over stock. Most likely will be getting a new turbo soon - KC stage 1 and supposedly that can be a good combo for towing.
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