Skip the auto shop - Our mechanics make house calls

Q: Changed heads and now it won't start. Dodge dealer said no compression

asked by on

Was running fine before I dropped a couple valve seats from over heat. Changed heads. Won't start

My car has 80 miles.
My car has an automatic transmission.

A: Hi there. For the valve seats to drop out o...

Hi there. For the valve seats to drop out of the cylinder head(s), the engine overheat must of been severe. Assuming you followed proper procedure replacing the cylinder heads. This would lead me to believe it to be the compression rings on the pistons. Check the previous work for the cylinder heads to make sure they were done correctly. You may want to get a second opinion on the car to verify the problem. A certified technician from YourMechanic can come to your car’s location to diagnose the no start and follow through with repairs.

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: On 2nd remanufactured Mass Air Flow sensor, & it still runs better with it disconnected. Any ideas? 1001 Dodge Colt

Hi - I would first check for problem codes (even though you are pre-OBD II), diagnostic codes can be very useful in cases like this. It sounds like you have a fuel supply issue - low fuel pressure, leaking/clogged injectors,...

Q: Intermittent "no start" or dies while running fine on highway - what's wrong? 2003 Buick Rendezvous

Hi there: Once the vehicle starts, the job of the battery is pretty much done; which means if you're having issues with the vehicle shutting off, it's most likely caused by ignition system components; such as a the distributor or...

Q: Lights staying on

Hi. You don't specify which lights are stuck on, so I'm going to assume you're talking about the headlights. The problem could be the headlight switch, a stuck closed relay, a short in the circuit or a problem with the...

Related articles

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...
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...
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...