Scar0 wrote:
When were the spark plugs last changed? They need to be changed every 30k miles. Use only ZFR6F-11G in the 3.7. OEM is NGK brand and is what I use.
Do not use platinum or iridium plugs in the 3.7. They will only cause problems.
Another thing you can do is to pull the EGR off and clean/replace it. They are known to carbon up.
Just got it at 90k, based on the service records they have never been replaced, which is shocking considering everything else is listed there and was maintained pretty well. So those are definitely due, could that also cause poor fuel economy, because I'm getting maybe 10mpg instead of 13-19