2005 253k miles. Just noticed on my last trip that my engine has developed a tick only when at operating temp, and only at idle. Pulled the injector cover and nothing obvious, no puff of smoke when running, no deposits. The ticking increases in frequency with increasing RPM to about 1k when it disappears completely. Ive never done the injector seals, but the hold down bolts do appear to be newer, and i bought the van with 168k on it. It honestly sounds a little louder when listening from below than above, but that could just be it getting drown out by the top end. Also of note, used injector cleaner the last tank of fuel prior to the ticking starting, but that could be completely unrelated. Nothing noticed as far as drive ability or power.
Several specific questions.
1. Any issues with unplugging each injector separately to see if the noise goes away as an ancillary leak test, or will this piss off the computer?
2.Is anyone replacing injector seals as routine maintenance, or only waiting until symptoms occur? (I’ve got a lot of downtime currently and seems like a decent time to tackle this even if it isn’t the problem).
3. Any reason to try to get factory bolts with the captured washer for the injector cover vs just high grade M6 and a small washer? (Heads are rusty and starting to strip)
4. Any better ideas for what this noise actually is? (I went down an injector worm hole during my attempts to figure it out)
Several specific questions.
1. Any issues with unplugging each injector separately to see if the noise goes away as an ancillary leak test, or will this piss off the computer?
2.Is anyone replacing injector seals as routine maintenance, or only waiting until symptoms occur? (I’ve got a lot of downtime currently and seems like a decent time to tackle this even if it isn’t the problem).
3. Any reason to try to get factory bolts with the captured washer for the injector cover vs just high grade M6 and a small washer? (Heads are rusty and starting to strip)
4. Any better ideas for what this noise actually is? (I went down an injector worm hole during my attempts to figure it out)