Dec 17, 2018 · A stuck-open EGR valve causes the same symptoms as vacuum leaks

Well I ask because I think I have a vacuum leak, theres been a significtant loss in power, the gas mileage has decreased quite a bit and the car runs really richFailure to develop a vacuum may be caused by a large leak or a restriction

Oct 15, 2013 · Manifold Vacuum Leaks

A post turbo leak above atmospheric will result in the car running richI have a simple car scanner which throws me P0505 which is idle control and I will delete the code and everything works perfect! I've checked under the hood and can't really find any leaksIf there is no change in the idle when the oil cap is removed, you may very well likely have crankcase vacuum leak somewhere (most likely cause by a failed air-oil separator)A vacuum gauge can tell you a lot about an engine's condition, similar to a full leak down test - but in a much easier way

A bad car vacuum line can cause some pretty serious runability issues with virtually any car motor

Yes, the system should definitely hold a vacuum overnight

Re: Vacuum Leak on Throttle Body The hole that leaks (vacuum), is the port for the vacuum line for the MAP sensorUSUAL CAUSE The usual cause of abnormally high idle speeds are vacuum leaks or an inoperative idle speed control motor

Anyway I took care of that now no more leaks at all from there and I have no leaks at all from any vacuum lines or anything now however I did notice one thing the smoke

You may recognize the following air related symptoms: Loss of flame retention (flame pulsates on end cone)This can be unsafe while driving down the road, especially if the leak increases as you are driving

CAUSE 2: intake manifold gaskets that are leaking vacuum

A bad car vacuum line can cause some pretty serious runability issues with virtually any car motorIf you have a vacuum leak that was brought on by a bad vapor canister purge valve, then you will probably have difficulties starting your vehicle

Feb 27, 2015 · If STFT is greater than about 10 to 12, the engine is running LEANCar Leaking Oil After Oil Change! Sometimes professionals mess up and your car leaks oil after oil and filter are changed

Take a look around and see if you can find the vacuum leak

Mar 29, 2019 · Attach your vacuum gauge and start your vehicle's engineSpray suspected area with acetone and observe sudden increase in pressure on the thermocouple gauge if a leak is presentPros find leaks by filling the engine with smoke and looking for wisps of itAnother common cause of a hard cold start, or poor running while cold is dirty intake valves

Take a look around and see if you can find the vacuum leak

Sometimes coolant will leak out of the intake manifold gaskets and go right into the intake manifold, causing the engine to overheat

1) Carburetor floodingFuel tank leak 3Broken, disconnected or misrouted vacuum hoses will do the same