Ok first I will say I have a 2000 7.3 with 185,000 miles truck is blowing blue smoke that smells just like diesel, at idle only just changed injector orings and glowplugs and the truck is still smoking. It don't look like I have any oil in fuel but it uses a little bit of oil. The truck runs and starts normal I hooked the scanner to it and the 2 codes I'm getting Is a exhaust pressure sensor and a PCM code. Every now and then I can hear I knock not sure where it's coming from. And I will say when I pull oil filler cap off it blows a little white smoke out. Any help would be awsome thanks I will post pics or videos just don't know how to
Need help asap with 7.3
- Thread starter Jmj32988
- Start date
well, given the time of year, I'd say,
"incomplete combustion"
Diesel fuel is oil, so yeah, it will have a blue-ish hue to it.
Concern yourself not over the mole-hill, young Padawan..
A hell of a lot of guys have spent a hell of a lot of money.. and still had that issue.
"incomplete combustion"
Diesel fuel is oil, so yeah, it will have a blue-ish hue to it.
Concern yourself not over the mole-hill, young Padawan..
A hell of a lot of guys have spent a hell of a lot of money.. and still had that issue.
Arisley
Moderator
While engine is running, remove the oil cap. Place it upside down on the fill tube. If it blows off, you have issues. If it rattles around and eventually falls off, or just sits there, you are OK.
On the smoke. Run that old girl until she is good and warm, see if it goes away. If it does, no issues. If it doesn't, you have an issue.
If they are original equipment injectors, they are getting tired.
On the smoke. Run that old girl until she is good and warm, see if it goes away. If it does, no issues. If it doesn't, you have an issue.
If they are original equipment injectors, they are getting tired.
lincolnlocker
Well-known member
What they said^^^^
live life full throttle
live life full throttle
Yea I turned the cap upside down it don't blow it off but defiantly have pressure coming out bc the cap kinda moves a little and I drove it for about for about 25 min since I changed the orings. And I can hear a knock sometimes I think it's and injector pinging but new to diesels so not 100 percent sure
Petro
Well-known member
The blow by sounds normal. As far as the smoke, I wouldn't get to excited. If it starts fine, runs fine and isn't taking noticeable amounts of oil or coolant than just drive it. I think you'll find its probably cold related. Drive the piss out of it, the 7.3 is a pretty solid platform.
