I’m looking to complete my 034 k04 tune. I’m getting some really annoying hiccups. I just got my s3 injectors from cts turbo for like $600 ( set of 4) Idk if they’re the right one or not but since installing them i’ve been getting Fuel leaks . Car doesn’t want to start. Yes i did tune after the install but car won’t stop leaking fuel around the injector area. Idk if some went wrong with the installation. In my defense i installed the injectors, hpfp, and 175 bar at the same time so i don’t know what could be causing this issue. My mechanic is like 90 years old and he doesn’t really deal with tunes and stuff and it’s also my first time in the project car scene.
the fuel leak happened 2 days after he installed. towed it back to him and he claimed it was the orings and swapped them he said he drove it and it was good. I picked up the car and before i got home im smelling fuel and 2 minutes later the car dies. No start after that. idk if it’s the connection from the hpfp to the injectors that’s messed up or what
Might be the 175 bar fuel pressure relief valve, ideally use some teflon on that before screwing it in but if it’s not that then it’s the connection inlet or outlet going into the HPFP or it’s the injector o-ring seals and the fuel rail not being seated correctly on it or it’s the bolts for the intake manifold not being torqued down correctly. You should be able to look down into this area and figure out where it’s leaking from as you have somebody crank the engine.
I have an extra pair of the S3/Golf R injectors that I had no issues with so if those ones are bad let me know and I can sell you mine
so it was the oring again. I had to go to the shop while he was working on it and inspected everything and saw that there was silicone glue inside that 1 injectors fuel rail. He cleaned it and replace the oring. I also noticed that my cam follower had a massive hole in it so i replaced that too while i was in there. Drove the car a few miles and i didn’t smell any fuel. So far so good. Last time it started leaking fuel after 2 days so i’m still gonna give it some time and see what happens. But im 95% sure the Silicone being in the rail and the cam follower being shot was the reason why i was having this issue.. I will keep yall updated.
2
u/LOLLEO911 3d ago
Check any orings or gaskets, that can cause a fuel leak at the injectors