Skip the auto shop - Our mechanics make house calls

Q: washed #8 cylinder

asked by on

How much would it cost to get a washed #8 cylinder to be fixed or replaced

My car has 180000 miles.
My car has an automatic transmission.

A washed cylinder indicates there has been a large amount of unburned fuel introduced into the cylinder. This usually is a result of a no spark condition which will not ignite the fuel in that cylinder. If this is indeed an accurate assessment of your condition, the first thing that needs to happen is diagnosing why there isn’t any spark and repairing it.

Addressing the washed cylinder is actually quite simple. A washed cylinder creates low compression in that cylinder. Just squirt some oil into the cylinder and it will help the rings seal. Keep in mind not to squirt in so much that the cylinder will hydro lock. It does take a lot of oil to hydro lock it a cylinder, so be sure to squirt plenty in. Once the cylinder begins to fire, expect to see a lot of smoke out the tail pipe. So be sure to start it outside and away from anything or anyone it will disturb. Keep it running at a high idle until the smoke clears. When the smoke begins to subside, go for a test drive.

Knowing how much this will be greatly depends on why the cylinder is washed. In other words, why it doesn’t have spark. This will require a mechanic to diagnose the issue.

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!
  1. Home
  2. Questions
  3. washed #8 cylinder

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: Lights work, but car won't start.

I would need more information to determine the problem. If you hear a clicking noise but the engine wont turn over, then your battery may not have enough charge or may have a bad connection. Test the battery, if the...

Q: Truck squealing when turning the wheel. 1988 Dodge W150

Hello - the first thing to check is the condition of the drive belt for the power steering pump, and if it is correctly tensioned. A good "thumb measure" for proper tightness of the belt is if you can depress...

Q: My keyless entry remote only works when vehicle is on... (Vehicle was stolen and recovered)

It sounds like there may be an issue with the module that recieves a signal from your key fob. This module should be working even if the engine is not running. It is very likely that the security system was...

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...
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...
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...