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any bravo flyers ever have their oil pressure drop significantly then come back up? i was climbing out in imc on thursday morning and at 5700' i noticed the oil pressure guate was indicating 20-30psi, right on the red line. i immediately pulled power (climb power was 34/24). i reduced to approx 25 inches and made my turn back to the airport. oil temp stayed where it always does at 180° so i didn't think i was losing oil. there was no engine roughness or any abnormalities apart from the low press indication. as i descended down to 2500' the oil pressure started reading higher - slowly, not all of a sudden. by the time i was vectored onto final the press was back to 80 psi. i first looked at the pressure transducer to see if there were any signs of failure/leaks - nothing. i removed the oil line from the t to the transducer on the accessory housing and blew out the oil in the line onto a paper towel to see if there were and contaminants - nothing. i cleaned the inside of the transducer with a twisted paper towel and found nothing. i did notice the transducer in the svc manual shows the unit vertical. mine was horizontal so i changed to mounting vertical. after that i checked the gauge w the mooney rheostat that plugs into the 4 prong connector at the fire wall- the gauge read within 2.5 psi of the instrument settings. i pulled the gauge and installed another one and got more accurate readings off the spare gauge. i'm thinking 2.5 psi difference isn't horrible, so put the factory gauge back in i then ground ran it and noticed rpm wouldn't hold below 33 inches i could hold 34/24 but as soon as i reduced to cruise of 28.5 the prop would fall off to 21-2200 rpm with veneer knob the whole way in. i cranked the oil pressure relief screw in one turn and noticed better oil pressure at low idle and cruise settings but rpm still wouldn't hold at less than 33 inches probably due to lack of resistance i pulled the prop gov to check the screen and found the engine was put together w/o screened gasket - one will be installed next week - but found nothing out of sorts i then flew to 10,000' around the airport and noticed no drop in oil pressure and the prop held rpm wherever i put it i experimented w high man pressure/low rpm high rpm/low mp etc etc - did super steep climbs to near vertical to see if i could get any cavitation at the pick up - and nothing, oil pressure remained constant the whole time at 70 psi i them landed and changed the oil and strained it through a shop rag and found no metal or anything weird i'm thinking the transducer may be on its way out - the oil press and fuel press gauges both kind of give s slight waver in cruise sometimes . they were doing this on the flight at the airport to 10,000' . it's not a large movement, more like a shimmy back and forth, and i know it'd be impossible for the oil press to fluctuate at constant rpm unless a relief valve has dirt in it holding it open, but even then i think it'd be more of a drop in press not a fluctauation my concern is the low press reading i experienced if anyone is familiar w similar experiences please let me know what the remedy was - id try new transducers but they're no longer produced and out of stock everywhere i've looked probably going to install a second oil and fuel press gauge - any recommendations would be greatly appreciated engine has less than 100 hrs since oh

Ok, here's the deal. My manifold pressure transducer is sick and Mooney does not have one. To add insult to injury they can't get one for 6 months. For a used transducer that works I will pay $1000.00. I know that sounds crazy but the new part will cost $1800. I have the Moritz instrumentation and the Ovations/Eagles between 1999 and 2003/4 used this transducer. If any of you know where there is an Ovation or an Eagle that is being parted out I would appreciate the direction. FYI, the Part No. is SP100-110-25a. It was made by Patriot Systems which has since been acquired by Ametek. Ametek will not work on the part and was totally unhelpful -- they clearly said that they are not interested in supporting Patriot parts and they do not have parts for the unit. I have called Wentworth and LASAR and they didn't have one. So, who wants to make my day?

In need of your help again! I recently bought a used fuel flow meter and I am having a difficult time trying to locate the perfect spot for the fuel transducer. I have tried to search the forums in the hope of finding that someone else had posted pictures of the install on an IO360. I could not find any (I can't find a gallon of milk in the refrigerator either) Is there a location that has worked for you?

When We bought out J model 12 years ago the Shadin Mimi-Flo fuel flow was not accurate. I adjusted the K factor (pull the unit from the panel & move the microswitches, trial & error, it was a pain in the a$$). I finally got it adjusted so that a fill up would be a few tenths of a gallon of the Shadin's fuel used number. Now the Shadin shows that I've used 5 or 6 gallons more than actual. Do I need a new transducer? I'm considering upgrading the JPI 700 to something that includes fuel flow. All my primary gauges are working fine so I don't want to spend for a JPI 900 or 930. Suggestions?

Selling a new Floscan 201B(M) transducer from Instrument Tech. MFG Date is December 22, 2015. Part was installed in my Mooney M20K for 30 minutes as I thought the issue was the transducer but it was in fact the Hoskins FT-101 in need of overhaul. I paid 550 plus shipping, selling for 475 and includes free shipping. Comes with test paperwork, certificate of conformity along with an 8130-3. Wires have been cut and are about 6 inches long, should be plenty for your install into another Mooney.

Don Muncy started a thread about fuel flow transducers, and many have replied but one question remains: what was the original transducer installed in early 231s, the one compatible with the ships gauge for manifold pressure and fuel flow? I believe mine has laid an egg, and would like to find one with a k-factor close to my original so my ships gauge may work with reasonable accuracy. Based on failure of both my ships gauge and my EDM-700, I believe it is the transducer which has failed rather than both instruments or something else. That said, I'm about to delve into the wires, looking for voltage and good airframe grounds. What is the model of the fuel flow transducer originally installed? Anyone know where I can find one? Alternatively, how does one go about recalibration of the ships gauge for Fuel Flow to a transducer of a different k-value? I'm guessing recalibration is necessary, but that's only a guess...I'm a pilot but not an A&P. Lastly, as the EDM-900 is an upgrade from my 700 and I realize the original components don't last forever, my longer-term plan is to install the 900 as primary but keep original gauges for backups. Anyone done this, or does the 900's STC not allow for such installations?

I have a FT-101 that was working fine, My transducer died, bought a new one (Floscan 201) It now works great with my JPI 800 but the FT-101 shows about 1/3 of actual flow even after I adjusted it. I noticed when I entered the K value in the JPI-800 that it was a much smaller number than was in there (I assume the factory Transducer was mated to the FT-101) Any ideas? any FF meters that will fit in that same spot? that are K-value adjustable ? Thanks Scott - Mooney 231 - 1981