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Car is difficult to start, and will not idle. Whistling or sucking sound may be heard, One spark plug may be burning incorrectly.
A stumbling engine, poor idling, possibly having to keep revving it to stop it stalling at idle.
I t would be much easier if you provided the year and make of the car. also if you were looking to diagnose a coolant leak or vacum leak. Generaly a vacum leak in the inlet manifold will result in a rough idle in 1 or more cylinders. The best way I have found to diagnose any vacum leak in an engine is to get a small propane cylinder. Any profesional auto tool supplier such as Snap-on or Mac Tools should have in stock a tool that attaches to the cylinder and alows you to have a small amount of propane to come of the hose end. ( this is called a propane wand) To diagnose start the car and very slowly move the propane wand around the intake manifold and vacum hoses. when you find the laek the engine RPM will increase and smoth out. PLEASE BE VERY CAREFULL NOT TO HAVE TOO MUCH PROPANE COMMING OUT OF THE WAND AS IT IS FLAMABLE. If you are unable to purchase or borrow a propane wand you can try very carefully spraying a little carborator cleaner in the area tou think its not as exact but it will give you a general idea of where the leak is.
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How do you tell if a intake manifold gasket needs replacing?
Irratic idling condition is indication of intake/inlet manifold gasket leak. Change gasket immediately. This particularly applies to EFI engines. Newaz.
How can you tell if inlet manifold is faulty?
You will feel a miss at idle and the idle speed may be erratic. Try retorquing the intake manifold bolts, working from the center out in the recommended tightening sequence. If that fails, the intake manifold will have to be removed and the intake gaskets replaced
You have water leeking from between head and intake manifold near timing cover side does manifold have gasket or is there core plug behind manifold?
I can tell you if your vehicle is a GM, it has a gasket, and it blows out, and you need to replace the gaskets as soon as possible. Hopefully the leak is only external because if engine coolant leaks internally it will do serious damage quickly.
How do you tell if your intake manifold has a leak on 2001 Pontiac grand am gt V6?
The easiest way is to buy a can of throttle body cleaner. Start spraying it around the edges where the intake manifold seals. You may need to use the little tube supplied with it to get a more precise spray pattern. Any change in engine RPM or idle characteristics would indicate a vacuum leak. If you are referring to a coolant leak, you should be able to see the coolant....either pooling up or dripping. Those engines within a few years before and after yours are known for weak intake manifold gaskets from the factory.
How do you tell if you have a CO2 leak?
If you can hear it.
Why would a 1989 Cadillac ElDorado show the service engine soon warning light after the oil leak on the manifold was repaired?
probably something was left unplugged. Go to auto zone and get the codes read for free and it should tell you what it is.
99 GMC Suburban 4x4 w 350 - you have a small antifreeze leak behind the left exhaust manifold looking from the front you can not see well enough to tell where it might be coming from Any ideas?
i have had an antifreze leak also but at the front it was the intake gaskets and have two frends with tahoes that needed intake gaskets also
How do you check coil packs on a 2000 s type v6 jaguar?
hello there if its missing i suggest you take it to jaguar and have it put on a machine first of all. as there are 6 coil packs 3 on the right and 3 under the inlet manifold they will tell you which ones are missing if its the ones on the right its very easy to change them but the left is a lot more hassle as the manifold as to be removed i hope this as help you
98 silverado you cant keep antifreeze in it you cant really tell where it is leaking from and you can smell it when the motor is hot?
Leak is from the intake manifold at the back by the firewall. drips when not running due to presure at the top, vaporizes on the exhaust pipe. Need a new manifold gasket, $500 labor $50 parts. 4-5 hrs time
What is a common problem with a typhoon?
From experience with various Typhoon and Syclone owners I can tell you that the transmission will snap under harsh acceleration. To make the list short, transmission transmission mounts transmission oil lines front lower intercooler front lower intercooler pump wiring radiator thermostat exhaust manifold leak intake manifold leak wheel cylinders (rear) wheel axle seals (rear) caliper bolts stock exhaust system
Saab 9.3 Vector Sport 1.9tdi 150bhp showing error code P1109 can anyone tell you what that means please?
Inlet manifold swirl valve , module is giving up or one from 4 flaps not moving . http://www.ms-motor-service.com/ximages/pg_si_0093_en_web.pdf
When there's a coolant leak from the intake manifold on a 1992 MPV van how can one tell if the head gasket has also been compromised?
You can tell if you're head gasket has been compromise by looking into the coolant reservoir, with the engine running. When the head gasket is compromised there will be air bubbles in the coolant reservoir.
