Never had this issue, but I have a two questions. Answer honestly and they may lead you to a possible cause.
Question 1: Do you let your vehicle run for a little bit after arriving at your destination?
Question 2: Do you ever take very short trips, and the engine does not warm to 190° on the temp guage?
Reason for questions:
1. Turbo engines need to cool down the turbo after running. Does not take too long, I usually go about 30 seconds to 1 minute. Letting the engine idol also lowers the fuel supply to the jets. Too much fuel left in the supply from turning off right away can foul the plugs when you go to start.
2. Turbo engines need to warm completely to running temperature or you can foul the plugs. My guess would be that you have short trips that do not get the engine to full temp, and the plugs are fouling. Dealers should tell you this when you buy a turbo engine, however I wonder if they even realize it. I have watched a dealer pull a vehicle around to the customer and turn it off right away. You can get by with this quite a few time, but eventually the pluggs will start to foul. See if these scenarios fit, otherwise not sure.
Hope this helps,
Question 1: Do you let your vehicle run for a little bit after arriving at your destination?
Question 2: Do you ever take very short trips, and the engine does not warm to 190° on the temp guage?
Reason for questions:
1. Turbo engines need to cool down the turbo after running. Does not take too long, I usually go about 30 seconds to 1 minute. Letting the engine idol also lowers the fuel supply to the jets. Too much fuel left in the supply from turning off right away can foul the plugs when you go to start.
2. Turbo engines need to warm completely to running temperature or you can foul the plugs. My guess would be that you have short trips that do not get the engine to full temp, and the plugs are fouling. Dealers should tell you this when you buy a turbo engine, however I wonder if they even realize it. I have watched a dealer pull a vehicle around to the customer and turn it off right away. You can get by with this quite a few time, but eventually the pluggs will start to foul. See if these scenarios fit, otherwise not sure.
Hope this helps,
