Q: New at this. Started car & Popped hood - couldn't see anything unusual, but heard the knocking at the front of engine. Then the ca

asked by on

New at this. Started car & Popped hood - couldn't see anything unusual, but heard the knocking at the front of engine. Then the car stopped running. When you turn the key, it acts like it wants to crank, but won't it just starts making a rhythmic sound - bu-dump bu-dump. No recent repairs, oil doesn't need to be changed for another 600 miles. I have a video that I can send you all. it's a 1998 mitsubishi montero sport 237,000 miles,. the check engine light came on and I was able to get a reader which gave off the code for cylinder 5 spark plugs. could anyone tell me what the knock would be to cause the car to function this way? thank you!

Hi there:

If you’re having difficulty starting the engine, it’s most likely not related to the knocking sound. In general, knocking issues are caused by loose cylinder head hardware such as lifters, valves and retainers, low oil pressure issues or low oil levels; and problems with belt drive pulley’s that are worn out. If your check engine light came on, it’s always best to contact a professional local mechanic to download all error codes with a professional digital scanner; as it will most likely pinpoint the source of your hard to start issue.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. New at this. Started car & Popped hood - couldn't see anything unusual, but heard the knocking at the front of engine. Then the ca

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: I have 2004 Mercury Sable. It randomly stalls, after putting in gas, on hot days, will start after resting AC goes hot during buck

Hi Sandy. Thanks for all the information - it's very helpful to initially provide some technical advice. It appears as if you might have a few different things going on with your Mercury Sable. First, in regards to the engine...

Q: Noises coming from Ignition/Steering Column

This sounds like something is failing inside your steering column. Steering columns are very complex. There are both electrical components and mechanical components that will interact together in bad ways when things begin to break. The fact that the starter...

Q: Q: Car pulling to the left

Your tires and alignment need to be checked. A worn or low tire on the left can cause a pull. You can easily have your tire pressure checked. Any recent damage could also cause the pull. A qualified technician, such...

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...
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.