Skip the auto shop - Our mechanics make house calls

Q: If the intake manifold has a huge piece broken off of it will the car still start then cut off ?

asked by on

I recently discovered a piece of my manifold broken off while changing the rear valve cover,coils and plugs. I kind of made it way worse now it's two times bigger than before. When I try to start the car it starts then shuts right off. I'm guessing it's due to the vacuum leak. Any temporary fixes or only new installation is required ?

My car has 220000 miles.
My car has an automatic transmission.

A: If the broken off piece is admitting unmete...

If the broken off piece is admitting unmetered air to the intake, then yes that will have the effect of stalling the engine. A big initial concern is be sure no debris gets in there because anything in the intake will be sucked into the engine with potentially disastrous consequences. So, if you are awaiting a repair tape over the hole or somehow close it off. I was going to suggest taping it shut with duct tape so you can attempt to use the car temporarily but that is actually pretty risky because if the tape breaks free that itself will be drawn into the engine. Basically, the safest and most efficient thing to do is just get it repaired. If that is all that is wrong (or broken), it is no big deal and a certified Mechanic from YourMechanic could be dispatched, if you desire, to replace the intake manifold and gasket right at your home. The manifold is probably a dealer only item, so that has to be checked. Used manifolds might be available at lower cost via Car-part.com but the savings have to be substantial (at least 50% off new) to justify using a used part in this case.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Rough idle when in drive..but idle is fine when in nuetral or park

Hi there. Check for vacuum leaks on the engine. A small leak will cause the engine to stumble when the rpm's are low, like in gear on automatic transmissions. Look around the intake manifold for the gaskets being broken. Check...

Q: passenger side axle broke- how do I get the part out that connects into transmission

On the passenger side, be sure to remove the retaining bracket bolts. The splined segment of the axle that is within the transmission is retained in the transmission by a spring steel retaining clip known as a circlip. As you...

Q: car not starting with new battery, starter making mechanical noises

When the car does not start after the battery was replaced, this indicates that the battery was not the only issue. If the battery was load tested and determined to be faulty, a replacement will generally fix the problem. However,...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...