Skip the auto shop - Our mechanics make house calls

Q: Misfires with scoring on inside of cylinder 1

asked by on

My first cylinder keeps eating sparking plugs and throwing misfire codes. I put a scope in there and found scoring on the cylinder walls. It looks like it might have had a leaking head gasket. It runs okay once the built up coolant burns up. Do you think I should put in a new head gasket, or get a re-manufactured engine? Any other advice?

Hello, I would not recommend that you replace only the head gasket, because of the scoring on the cylinder walls that will still remain. This could lead to a loss of compression over time and cause the engine to run poorly and lose power. For this reason, it would be best to replace the engine.

Your options when replacing an engine are getting one that is remanufactured or getting a used engine from a salvage company that is in good condition. Although a used engine will be less expensive, there is always a greater risk of having other issues or that the used engine will fail prematurely. A remanufactured engine is more expensive but is generally of better quality.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Distributor install

Bring up number one piston to TDC on its compression stroke and then align the crank mark with the big V between the two marks on the timing cover. Then align the distributor to number one on the distributor cap...

Q: Truck isn't starting

Hello, thank you for writing in. There are several tests you will want to consider at this point. It would appear that there is some kind of electrical fault revolving around the headlight circuit. One thing you can do is...

Q: Engine idle fluctuates and dies.

This may be a couple of different things. Your truck has what is called a throttle position sensor. The throttle position sensor is a sensor used to monitor the throttle position of the throttle plate inside the throttle body in...

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...
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...