Q: Why caution should be observe during compression test?

asked by on

Why caution should be observe during compression test?

You should disable the fuel pressure pump and spark of the ignition. This way you do not burn out the ignition system and flood the engine with fuel. The best way to do a compression test is to operate the starter without turning on the ignition switch. This way the fuel pump and ignition systems are not turned on. If you need some help with this, consider YourMechanic, as a certified technician can come to your home to service your vehicle.

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. Why caution should be observe during compression test?

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: Bonjour j'ai une voiture vw amarok 2011 2.0 TDI le code de défaut p0087 mes je trouve pas la panne. Merci de votre réponse

Hola. El código P0087 aparece cuando el sistema de combustible ha perdido presión de combustible y el sensor de presión de combustible lo ha recogido. Revise el filtro de combustible, las líneas de combustible para ver si hay una restricción,...

Q: Q: Problems starting car

Hello. It sounds like the key or the ignition switch could be having contact issues. There are contacts inside the ignition switch. To eliminate a worn key resistor, try another key and see if you have the same result. If...

Q: Car not starting after initial start

Hello. Most of the time when this engine will not restart once it is hot, it is due to a failure in the distributor. Typically when these start to fail they will not produce spark once the engine is turned...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.