MATTS875 Posted May 18, 2020 Report Posted May 18, 2020 Evening everyone, a few months ago I noticed that my oil temps were high in the 225-230 range with cowl flaps open. I had it at 3 different shops without anyone able to find out the cause. I’ve overhauled the oil cooler, checked baffles and still no change. I sent the plane in for an annual and long story short had the engine overhauled. I got the plane back tonight for the first time and oil temps are the same as before. Not sure what else to do. Spent a lot of money on this and still no clear resolution. Any ideas? The shop that did the overhaul is well known to do great work. I’m having it flown back to them tomorrow. Unfortunately because of my work schedule I have to hire a pilot to do this for me at added expenses. All ideas are greatly appreciated Quote
carusoam Posted May 18, 2020 Report Posted May 18, 2020 Want to join a similar discussion in process? I think you may want to start here... and go through the basics... unless you are ready to talk vernatherm, flushing the oil cooler, and OHs.... It helps to know about thermistors and their location.... I think this thread only started today... Best regards, -a- Quote
MATTS875 Posted May 18, 2020 Author Report Posted May 18, 2020 9 minutes ago, carusoam said: Want to join a similar discussion in process? I think you may want to start here... and go through the basics... unless you are ready to talk vernatherm, flushing the oil cooler, and OHs.... It helps to know about thermistors and their location.... I think this thread only started today... Best regards, -a- Thank you. I’ll join in 1 Quote
MATTS875 Posted May 18, 2020 Author Report Posted May 18, 2020 6 minutes ago, Jpaultaboda said: Bad sensor ? It started 1 1/2 hours into the flight from the shop. I’ve had the sensor checked and all was correct. Quote
alextstone Posted May 18, 2020 Report Posted May 18, 2020 Here's a thread that I posted a couple of weeks ago describing the evaluation and replacement of the vernatherm: I'm not suggesting this is your problem but it is one component of the oil system that influences temperature. Quote
Guest Posted May 18, 2020 Report Posted May 18, 2020 Replacement of the Vernatherm valve is supposed to be part of the overhaul. First step should be confirm the accuracy of the temperature gauge. Clarence Quote
N201MKTurbo Posted May 18, 2020 Report Posted May 18, 2020 There is a tool for cleaning up the vernatherm seat. I borrowed it from the engine shop and used it on my engine. It helped. You might give that a try. Just put some grease on the cutter to hold the chips. 1 Quote
larrynimmo Posted May 20, 2020 Report Posted May 20, 2020 If you have an engine monitor system, buy an addition sensor and mount it on a pipe at the oil cooler...hook that sensor up where one of your cht or egt is so you can now temporarily watch the performance of the oil cooler...and the best would be to install one on inlet and outlet...it would be good to cover with foam tape to keep air flow from affecting temperature Quote
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