Skip the auto shop - Our mechanics make house calls

Q: Service ESC

asked by on

Would a faulty electronic spark control module cause low compression on one cylinder?

My car has 59467 miles.
My car has an automatic transmission.

A: The Electronic Spark Control module control...

The Electronic Spark Control module controls the ignition timing keeping the ignition cycle smooth as the various demands of the engine change depending on driving conditions. The compression in a given cylinder is created by tight clearances in the cylinder walls which are maintained by the piston rings keeping a tight fit as the piston slides up and down inside the cylinder. When piston rings begin to collapse or fail, the compression will be compromised. Cylinder head gaskets also play a critical role in maintaining proper compression. When cylinder head gaskets fail, this also creates a leak in the combustion chamber causing a drop in compression. I would suggest having an expert from YourMechanic come to your location to diagnose your low compression problem.

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・Save up to 30%

Get a quote

What others are asking

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
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...