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The easiest way to find a vacuum leak involves using any brand/type of carburetor cleaner or any some other type of cleaner in a spray can or spray bottle. With the engine running you spray around the suspected area . If there is a leak at the location you are spraying the carb cleaner, you will immediately notice an increase in the RPM of the engine. You can use this method to find cracks in a vacuum hose that are very hard to see if they are surrounded by wiring harness' and other items. This also works if you have a carb or throttle body base gasket leaking, intake manifold gasket leaking or even mismatched manifold with the cylinder heads.
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Engine running lean 95 Chevy blazer?
Check for vacuum leaks.
92 Pontiac sunbird convertable when its idling it sometimes varies a few hundred RPMs you tried removing cleaning and regapping the plugs but now the engine sputters under heavy acceleration what did?
Check for vacuum leaks before you go any further. If you hear a hissing noise, that's probably a vacuum leak. You can use a smoke machine (with the engine off) to pump smoke through a vacuum hose into the intake to help locate hard to find leaks.
What can make an 1988 s10 blazer shake when the gas pedal is pressed?
Vacuum leaks. Get a can of throttle body cleaner and with the engine idling and warm, spray the throttle body cleaner anywhere you have or see vacuum lines. Just a small squirt and see if the engine picks up revs. If it does, you have a vacuum leak. Fix that oen and then go spray again at others. While you are there it's best to try to locate all. The engine idles fine because the engine is not under load and your ratio of fuel to air will let the engine idle but when you press the throttle that puts the engine under load and now the engine suffers from too much air due to the vacuum leaks and it stumbles.
360 engine backfires under load?
check your timing and vacuum advance and vacuum leaks. from there check fuel delivery system.
What cause power lose on a 2000 BMW 528i engine?
Power loss on an engine is generally due to an air problem. Check the vacuum lines on the engine to see if there are any leaks. Leaks in a vacuum line cause a car to either run to lean or rich. This will negatively effect the performance of the car.
Engine runs good at start then warms up and stalls and it stalls at stops?
Check for vacuum leaks.
What would be wrong if the defrost works but the vents don't in a 1991 Buick Regal?
You probably have a vacuum leak and aren't getting vacuum to the actuators. With the engine running, listen for vacuum leaks under the dash. If you don't have any leaks there, check under the hood to make sure the vacuum line THERE isn't disconnected.
How do you fix P0446 engine code?
Check for vacuum leaks and good electrical connection at the EVAP vent solenoid
Engine Idle-- 89 Chevrolet 2500 truck -- 350 engine EFI - Do you know what units effect engine idle -Would like all of them?
First, check the EGR valve for leaks and/or proper installation. If that's not it, check for vacuum leaks.
How do you check a vacuum hose for leaks on a dodge 3500 diesel?
How to check for leaks on vacuum hoses for a dodge diesel
Why does your f150 die at red lights?
Could be vacuum leaks. The year and engine info would help us help you.
VW Jetta ac blows hot air when accelerating?
This is most commonly caused by the air control doors closing. This system is vacuum controlled. When acceleration the engine is pulling less of a vacuum and any leaks will cause the doors to move to the "rest" position where they stay when there is no vacuum. Checking for vacuum leaks would be the first place to start.
