Compression Ignition Addict
Join Date: Mar 2010
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MPG took a major drop, NEED HELP
ive got a 99 7.3 crew cab dualley 2wheel drive with 100k miles. about 2 months ago i noticed a fuel smell and started seeing pudles. found out it was the o-rings in the fuel bowl, so i searched on here and bought the o-ring replacement kit. replaced ALL the o-rings, fuel smell is gone and no more pudles. but now my mpg is horrible!!!
truck is 90% stock, MBRP SS exhaust,NAPA filter mod, CCV mod, nothing major.
any advise or reccomendations as to whats going on?