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Thanks everyone, it did end up being a problem with a wire rubbing against the structure. Adding insulation resolved the issue!

Thanks for the suggestions everyone. The problem is a bit less ambiguous now-- I went down to the airport this morning and during the pre-flight almost immediately after turning on the nav lights the breaker popped out this time. The nav lights are required to be on for the anti-collision and...

Today when flying my Piper Archer II, all the lights were turned on (landing, anti-collision, strobe, and recog) except for the nav lights. A second or two after I turned the dial to activate the nav lights, the nav light circuit breaker popped and the avionics screens briefly changed...

I haven't been able to find that, but perhaps something like this would work? http://www.aerospacelogic.com/index.php?dispatch=products.view&product_id=100 Not sure what the installation costs are like though.

Okay, so it sounds like if the flex line is intact then it's probably indeed an issue with the gauge itself. I would love to exchange instead of overhaul, but haven't been able to find anyone offering this.

Got it, so it sounds like I should have the shop ensure that the measured orifice and snubber are in the line. If they are and the line itself otherwise appears fine, then the best course of action is to send the gauge in for overhaul.

Any suggestions on some other gauge I could get rather than overhauling the Rochester gauge?

I'm back with another problem on my Piper Archer II that seems to have stumped the local mechanics unfortunately. My fuel pressure gauge needle has always tended to oscillate rapidly, but sometimes it oscillates around the bottom, including around the red of 0.5 PSI. Turning on the electric...

Wanted to post what should hopefully be the final update here: the alternator belt has been replaced, which appears to have been the only problem. The aircraft has flown several hours since with no abnormalities. The compression test came back normal, and while the oil analysis will take several...

Wanted to provide a final update here just in case anyone else has the same issue in the future: it was indeed the battery, thank you so much for suggesting this! Works flawlessly now with the replacement battery, which I didn't think to try since the unit is mounted directly in the panel. Cost...

Forgot to ask, just sent them a note but they didn't mention it so presumably it was fine. Compressions were all good. Everything should be fixed by the end of the day today and flying again tomorrow morning.

Thanks for the advice. They already sent it in unfortunately and not sure where, but it sounds like it should provide useful evidence regardless.

Thanks. I didn't ask about doing a borescope, but they are doing a compression test, oil analysis, and I will be reviewing the CHT data once the cable arrives. It sounds like that should be sufficient.

Yes, I'm curious if the oil analysis can provide relatively definitive info on if I should be concerned about engine damage or not - if anyone has any additional insight here I would really appreciate it!

Thanks for the input everyone, super helpful. To answer some questions: My maintenance shop unfortunately doesn't have an EDM PC interface cable, so I ordered one + a serial to USB adapter for my computer. I'll pull the data once it arrives next week. However, the mechanic doesn't seem too...

Makes sense, it does have an EDM 700, perhaps it's worth trying to pull the data off of that?

Yikes, thanks for sharing. It's almost due for an oil change, so I'll get that done now with an oil analysis while it's grounded anyway.

Got it, thank you so much for the input! These cowl plugs were connected by a strap, completely agree ideally the strap would go over a blade but I can't control how each person who uses the airplane positions the strap unfortunately.

A renter today neglected to remove the cowl plugs from my Piper Archer, ingesting them into the engine bay. He then proceeded to somehow complete a one hour flight and landed back without issue, oblivious the entire time (even remarked how everything worked great). I'm at a loss. The only...

Yup, that's the one. $440 is crazy! Way cheaper from Yingling Aviation.