Q: No compression in engine

asked by on

My engine has no compression. What could be causing this?

Unfortunately there are a few reasons as to why your Volvo’s engine has no compression. The most common reason I have experienced would be when the timing belt fails. When this belt fails, the starter will crank the engine over, which moves the pistons, but because the timing belt has failed the camshafts may not move at all. To be 100% certain this is the problem, it may be time to enlist the assistance of a certified mechanic. They will have the knowledge and tools needed to identify exactly why your S40 has no compression and assist you on making the necessary repairs, such as replacing your timing belt, to get your Volvo running again.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. No compression in engine

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: How much is it to fix a 2005 S40 trunk that no longer opens? It appears the trunk wiring needs replacing.

The cost depends on where the fault is. If the fault is simply a loose, or poor, ground connection and that is found on a quick initial inspection, the cost to both diagnose and repair your issue is pretty much...

Q: Very intermittent stall (once only) or rough idle after warm restart. Engine system service required warning comes and goes.

Hello. Thank you for writing in. Fuel pump issues and malfunctions do often start out intermittently. If the fuel pump is the problem, you can expect it to increase in frequency until it completely fails. It would be beneficial to...

Q: I don't know if the mileage is correct

Before you purchase this vehicle, I would have a certified technician inspect the car to make sure that everything checks out. It is not legal to tamper with the odometer and if you have a mechanic look at it, then...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...