Losing coolant and fouling spark plug
I have a '98 Ford Ranger with the 4.0, it has about 190,000 miles on it. I purchased the truck from my dad about 2 years ago, it had 178,000 miles on it then. When I bought it from him, it had fouled the #1 plug and noticed some slight coolant loss. The problem didn't happen again for another year or so. Now, I fouled a plug in less than a month, and coolant is disappearing a lot quicker. It seems like I might have a head gasket leak, but I've also read that it could be the lower intake gaskets.
Is there some way to determine between the two? I have noticed a hissing sound like a vacuum leak, possibly the lower intake leaking? Any opinions helpful!
2012 Jeep Wrangler Unlimited
2003 Jeep Liberty Limited
Sold and missed......'98 Ranger XLT 2wd