Engine oil smells like gas and no spark

Tiny
SHELBS
  • MEMBER
  • 2008 CHRYSLER SEBRING
  • 3.5L
  • V6
  • 2WD
  • AUTOMATIC
  • 109,000 MILES
My oil has a very strong smell of gas. What is the cause of that? Also there is very little spark, it only sparked once real good then the next spark was very light, there was no spark after that. How do I fix a no spark condition?
Saturday, February 20th, 2021 AT 4:42 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Hi,

The smell of fuel in the oil is likely from trying to start it with no spark to the plugs. If the fuel doesn't get burned, it will wash past the cylinder rings and into the oil. You will need to change it.

As far as the spark, it sounds like it could be related to the crankshaft position sensor. Here is a link that explains common symptoms:

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

If the sensor fails, you will lose spark. You can test it with a live data scan tool. Basically when the engine is cranking, you should see an RPM signal on the scanner. If there isn't, that is the likely cause.

If you check it and find it is bad, here is a link that shows in general how it's replaced:

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

Here are the directions specific to your vehicle. The attached pics correlate with the directions.

______________________________________

2008 Chrysler Sebring Sedan V6-3.5L
3.5L
Vehicle Powertrain Management Sensors and Switches - Powertrain Management Sensors and Switches - Computers and Control Systems Crankshaft Position Sensor Service and Repair Removal and Replacement Crankshaft Position Sensor - Removal 3.5L
3.5L
3.5L

pic 1

The crankshaft sensor is located on the driver side of the vehicle, above the differential housing. The bottom of the sensor sits above the drive plate.

1. Disconnect negative battery cable.
2. Unlock and disconnect electrical connector from crankshaft position sensor.
3. Remove sensor mounting screw. Remove sensor.

_______________________________________

I hope this helps. Let me know if you have other questions.

Take care and God Bless,

Joe
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Saturday, February 20th, 2021 AT 9:50 PM

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