crazyj
Active member
This past winter my car has been pretty consistently having really loud pinging/nailing (like someone shaking an empty rattle-can really quickly). I want to say it was shortly after I had it taken in after a no-start from intercooler icing up but I can’t say for sure.
It’s not all the time. At least quiet enough that I don’t notice it sometimes. Increasingly worse until 2000rpm under light to mid throttle. Bloody annoying and what’s worse is VW isn’t looking into it other than to have s mechanic test drive it. He figures nothing wrong.
I’ve heard that winter fuel combined with some of the injection cycles for regens, etc can make pretty loud clattering but I’d like to prove to myself that there’s nothing amiss before I go searching for a jugular at the dealership.
What are some tests I can perform to check things out? I’ve got a vcds at my disposal. I’d be willing to purchase a compression tester if that’s something I need to do. Is injector deviation the only thing I can really dig into? I can’t recall the deviations I read but they definitely were not 0.0 across the board. Stethoscope at the top of the injector is loudest/hardest knock on cyl 1, then 2 but that might be the knock from cyl1 carrying over.
It’s not all the time. At least quiet enough that I don’t notice it sometimes. Increasingly worse until 2000rpm under light to mid throttle. Bloody annoying and what’s worse is VW isn’t looking into it other than to have s mechanic test drive it. He figures nothing wrong.
I’ve heard that winter fuel combined with some of the injection cycles for regens, etc can make pretty loud clattering but I’d like to prove to myself that there’s nothing amiss before I go searching for a jugular at the dealership.
What are some tests I can perform to check things out? I’ve got a vcds at my disposal. I’d be willing to purchase a compression tester if that’s something I need to do. Is injector deviation the only thing I can really dig into? I can’t recall the deviations I read but they definitely were not 0.0 across the board. Stethoscope at the top of the injector is loudest/hardest knock on cyl 1, then 2 but that might be the knock from cyl1 carrying over.