Skip the auto shop - Our mechanics make house calls

Q: Car won't start after doing valve cover job.

asked by on

Once the valve cover gaskets were replaced with new ones and the covers put back on, I put the intake back on without using new gaskets and the car wouldn't start but I did get a pop and a backfire and the intake has become quite warm. I have bought new intake gaskets but have not installed them yet. Can u help

My car has 152000 miles.
My car has an automatic transmission.

A: Hi there. From the description you have pro...

Hi there. From the description you have provided, something was reassembled incorrectly. Not replacing the upper intake (plenum) gaskets should not have caused the vehicle’s no start condition. Once that you have the plenum removed, carefully inspect all the components you disconnected to do the valve cover gaskets. Hopefully you locate the problem. You may want someone else to inspect it, while it’s apart. If you locate the problem, put it all back together with new gaskets and happy motoring. If you did not locate the problem and your vehicle does not start, I recommend having your vehicle inspected by a certified technician, such as one from YourMechanic.

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: ANGEL EYES LED HALO RINGS NOT WORKING

Hello. If they were recently installed and are not functioning then it may be possible that they were not installed or wired correctly. Keep in mind that the halo driving lights are a separate light from the vehicle's regular headlights,...

Q: Why won't my car start now? What else should we look at?

Hi. This sounds like the engine timing may still be off and needs to be rechecked for proper alignment. Some of the wiring to the crankshaft sensor may be damaged as well causing it not start as well. Also, the...

Q: How do you know if its really a timing chain gasket? And how long does it take to repair?

It is more likely that the water pump is leaking from its front seal. The leak will show up from the center of the motor area and will drip off the bottom of the timing cover. The timing cover on...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.