So my lower intake gasket on my 2003 3.0 finally decided it wanted to leak. I noticed a drip for about 3 weeks and then magically it stopped. My gas mileage seems to be going down though without any driving changes. Normally I get about 16 mpg and now I’m down to about 14. My question is can the gasket cause a vacuum leak? I haven’t noticed any acceleration difference or noises...no noticeable misfire. I don’t really want to replace the gasket because I’m getting ready to sell it and pulling apart the whole motor doesn’t sound too fun.

 

I assume the drip you are referring to is antifreeze. I hope you have been checking the coolant level. Drips that magically stop are usually due to the lack of fluid. Anyway, a bad intake gasket can cause a vacuum leak. They can also leak antifreeze to the outside..or inside. If it leaks to inside, it can ruin the oil which can ruin the engine.

 

Sorry I got on your turf Bud! I’m out of here...

 

Hi jacking someone else's thread just confuses everyone.

Upper right hand corner of every page, click on your username, scroll down to "My Posts"

Do you mean this one ?
https://www.ranger-forums.com/genera...eating-162385/