Тоже ищите то, чего нет? Почему высокое давление во впуске — это НЕ подсос

What do most diagnosticians and car owners do when they see increased intake manifold pressure (for example, 40–45 kPa instead of the required 30)? Right, they immediately pull out a smoke machine or spray carburetor cleaner to find the air leak. But in a huge number of cases, they waste time and fix what's working properly. In this video, I'll clearly demonstrate the real cause-and-effect relationships in engine operation using examples and live diagnostic graphs. You'll learn why even a small air leak won't cause intake pressure to increase. The engine control unit (ECU) is a smart system. First, it will try to compensate for the excess air by closing the idle air control valve (IAC) or closing the electronic throttle valve. Only when the IAC valve reaches zero and the ECU begins adjusting the ignition timing (IAT) will the other parameters change. In this episode: Why high intake manifold pressure is most often a hardware issue (timing belt, valves, exhaust), not a leak. How the ECU masks an air leak at idle. Step-by-step algorithm: how to identify a leak using three parameters on a scanner (pressure, idle speed, ignition timing) without opening the hood. A breakdown of real computer diagnostic graphs. Watch to the end to avoid "trying it out" and learn how to read engine operation logic on the scanner screen! Subscribe to the channel, like it, and let us know in the comments: how many times have you looked for a leak where there wasn't one? ⏱ Timestamps: 00:00 — What do 10 out of 10 car owners seek help for? The main misconception. 01:06 — The banal logic that misleads mechanics. 02:06 — What hidden force is forgotten when searching for a leak? 03:24 — The ECU's secret weapon. Two methods for combating idle speed. 05:16 — STEP 1: Creating a small leak. What happens to the pressure? 06:34 — STEP 2: A very large leak. How do the idle speed control valve and throttle body react? 08:43 — STEP 3: A huge leak. Why does the ignition timing go into negative territory? 10:14 — The main symptom of engine stress, or why the pressure has increased anyway. 10:31 — Brief summary: A diagnostician's checklist. 🤝Thanks to our channel sponsors for supporting us: Mizantrop, Anatoly Krizhanovsky, Evgen Shramenko, Vitaliy Bashinsky, Vladimir Murashkevich, Andrii Kozub (Electric Dobropillay), Evgenii Shvets, Oleksandr Goncharenko, Denys Dubinenko, Aleksey Kolosov, Sasha Rubchenko, and Oleksandr Chunaev! 🤝Treat the author to a cup of coffee👉 https://sobe.ru/na/moylacetti ⚡Or become a channel sponsor and you'll gain access to exclusive bonuses. Learn more:    / @moylacetti   ✅Our websites: https://moylacetti.ru https://moylacetti.com.ua ✅Our forum: https://moylacetti.ru/forums/forum/fo... ✅Our Telegram: https://t.me/moylacetti 📌DIY computer diagnostics 👉https://moylacetti.ru/category/diagno... ⭐Contact the author👉 https://moylacetti.ru/obratnaya-svyaz/ #cardiagnostics #carrepair #airleak #scannerdiagnostics #ECU #IAC #intakemanifold #diagnosticiantips