Skip the auto shop - Our mechanics make house calls

Q: My car won't stay on

asked by on

Everytime i try to start my buick century it wont stay completely on and sometimes sound like its backfiring but i just replaced the spark plugs and wires also put in there right then i noticed one of my vacuum wires on top dont want to stay in its place

A: Hi there. Assuming the backfiring was takin...

Hi there. Assuming the backfiring was taking place prior to replacing the spark plugs and spark plug wires. This would lead me to believe there is a valve train related issue. Possibly, a broken intake valve spring. This would account for the vacuum line that doesn't want to stay in place. A compression test and cylinder leakage test would prove this fault. There any many possibilities for an engine backfiring. I recommend having your vehicle's stalling problem diagnosed and repaired 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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Piston misfiring and oil on a sparkplug

Oil in the spark plug bore is caused by a leaking valve cover gasket. This can short out the spark plug and cause damage to the plug and coil, and also the spark plug boot. The valve cover gasket set...

Q: When starting, car shakes and rattles and then quits

Sounds like you aren't getting enough fuel during "cold" start. First thing, check the cold start injector, and thermo time sensor, which regulates how long the cold start injector squirts. Next, check the Over-Voltage Protection relay and circuit. If this...

Q: Spark plug popping out

Hello. This is a common problem on the Ford modular V8. The new spark plug won't stay because the threads are stripped out. There are two repairs: 1) drilling, and installing a threaded insert into the head for the spark...

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...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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...