Originally Posted by BXK109
Why are they "blowing" are the bolts coming loose and beating the gaskets up? That has been my experience. I tighten my manifold bolts every 10k or when i hear them "tick" and the noise goes away. Manifold gaskets fail because A) they become lose and are beaten back and forth from exhaust gasses between the cyl and manifold or B) warped cyl heads/manifolds. You either have a warped head or warped manifolds if they stay torqued and still blow.
Well the truck didn't have a manifold leak until 90,000 miles.
Was told that sometimes the studs rust and allow the exhaust to leak.
Another offered that the manifolds are poorly made in the first place, and rust away.
Drove the truck for a a couple weeks with the leak, thinking it might be the "Y-pipe", before it was diagnosed as the manifolds.
There were broken studs, missing studs, and holes in the manifolds themselves. I could hardly believe that the leak wasn't worse than it was.
It's been about 40,000 miles since the repair, and I only noticed the leaking again within the last couple weeks. Again I'd thought "Y-pipe" but it is the manifolds again.
Been told that this is a common problem, so I thought there might have developed a common repair, that has become the standard or at least prefered solution, to the problem.
Its been overall a pretty good truck, still think there is a lot of use left in it. My wife is convinced there are only more problems likely, and that its time to concider a new truck.
Quess I was hoping for an inexpensive header recommendation, or some insight as to what the commited F150 owner was doing to stop the problem for good.
The body of my truck is starting to rust. Its not too bad yet, and I'm waffling on fixing it, getting everything made right, or just replacing it.
I'm aggravated to the point that if I buy a new truck it might not be a Ford. But if I fix it, and get another few years out of it, I might buy another F150.
Curious about the rumored F100.
(Supposed to be a little bigger than a dodge dakota)