kylebnoris
Member
- Joined
- Dec 29, 2023
- Posts
- 47
- Reaction score
- 45
Afternoon y'all.
Back at it again.
Hard or long start with sputtering then runs fine after on.
So fuel pump was dropping pressure when I tested via the fuel feed line on the gauge, replaced fuel pump and now the gauge holds steady. Reconnecting the fuel feed line to the fuel rail and then, testing at the fuel rails shows pressure dropping.
Alldata says faulty injector. So I put a extension to the injectors while it was running and all 8 are clicking, sounds consistent etc. I'm currently doing the knock sensors and harness but when I put it back together, I'd like to replace the faulty injector while I'm in there.
Only clue I have so far (might be unrelated) was that cylinder 5's spark plug was wet with oil / and or fuel when I replaced it and the plug wires. Spark plug was DRY on the interior of the plug, only wet on the exterior of the threads, thought it was a valve cover leak but it seems to be seeping out of the spark plug hole etc, so I'm thinking that cylinder has the leaking injector but no proof as of yet.
Any ideas? Test I can perform? I think I can check for a misfire with my Autel MX900 when I put it all together, didn't think about that. I'll also Ohm out all 8 injectors when I have them out.
Thanks!
![PXL_20240720_120814712.PORTRAIT.jpg PXL_20240720_120814712.PORTRAIT.jpg](https://www.tahoeyukonforum.com/data/attachments/428/428382-ab050c66e9e190e7bb1d4e82139e1a07.jpg)
Back at it again.
Hard or long start with sputtering then runs fine after on.
So fuel pump was dropping pressure when I tested via the fuel feed line on the gauge, replaced fuel pump and now the gauge holds steady. Reconnecting the fuel feed line to the fuel rail and then, testing at the fuel rails shows pressure dropping.
Alldata says faulty injector. So I put a extension to the injectors while it was running and all 8 are clicking, sounds consistent etc. I'm currently doing the knock sensors and harness but when I put it back together, I'd like to replace the faulty injector while I'm in there.
Only clue I have so far (might be unrelated) was that cylinder 5's spark plug was wet with oil / and or fuel when I replaced it and the plug wires. Spark plug was DRY on the interior of the plug, only wet on the exterior of the threads, thought it was a valve cover leak but it seems to be seeping out of the spark plug hole etc, so I'm thinking that cylinder has the leaking injector but no proof as of yet.
Any ideas? Test I can perform? I think I can check for a misfire with my Autel MX900 when I put it all together, didn't think about that. I'll also Ohm out all 8 injectors when I have them out.
Thanks!
![PXL_20240720_120814712.PORTRAIT.jpg PXL_20240720_120814712.PORTRAIT.jpg](https://www.tahoeyukonforum.com/data/attachments/428/428382-ab050c66e9e190e7bb1d4e82139e1a07.jpg)
Last edited: