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[MichaelSmith]

Hi,

Recently, we have met some -7B engine oil pressure high issue. First, we replaced the T/P sensor, lubrication unit and used dry air to blow oil supply tube(TGB, AGB and forward sump). Test engine, oil pressure high. Second, we removed exhaust nozzle, oil inlet cover and rear sump oil supply tube. Some carbon particle was found in rear sump oil supply tube. The engineer believe the carbon particle is the root cause of oil pressure high issue. So we replace a new tube and test engine again. The oil pressure decreased about 3 psi in take-off power point, and it's also higher than the average data. I don't think we have found the ture root cause of this issue. Have you solved this problem and what about your opinion?

Any help will be apprecited.

I didn't find the right solution from the Internet.

References:
http://www.sjap.nl/forum/viewtopic.php?t=1027
Explainer Video Service

Thank you.