Ok, it was mentioned that sometimes the chuffing sound out of the exhaust could be caused by a faulty injector. My question is, how does that happen and how can I find it or check for it?
I have decided that I would take Sunday off and pull the valve covers off and look at the valve train to see if it's something simple as a broken spring or whatever, before I take my beloved truck to a total stranger to work on it.
I am capable of doing the work (replacing the heads) but I would have to get the new heads from someone like Promar (no problem) and take off from work to do it (a problem). Plus, every time I take my car or truck to someone, they never do the job right. One time I had a racing shop (in Phoenix) install a bigger cam with different heads on my '84 F-100 with a 351 cleveland motor. Less than 5000 miles later, the cam started walking back and forth sending metal filings through out the oiling system.
I was in Austin when this happened. I decided to rebuild the engine and found that the cam bolt had come loose, allowing the cam to walk around which ruined my brand new Rhoads lifters. Not to mention pistons bearings and ect. They didn't torque the cam bolt down nor locktite it either, the f***ers. I wanted to catch a Greyhound bus to Phoenix and chuck a brick through their window!!! So, that's why I really don't want to let a stranger work on any of my vehicles.
I have decided that I would take Sunday off and pull the valve covers off and look at the valve train to see if it's something simple as a broken spring or whatever, before I take my beloved truck to a total stranger to work on it.
I am capable of doing the work (replacing the heads) but I would have to get the new heads from someone like Promar (no problem) and take off from work to do it (a problem). Plus, every time I take my car or truck to someone, they never do the job right. One time I had a racing shop (in Phoenix) install a bigger cam with different heads on my '84 F-100 with a 351 cleveland motor. Less than 5000 miles later, the cam started walking back and forth sending metal filings through out the oiling system.
I was in Austin when this happened. I decided to rebuild the engine and found that the cam bolt had come loose, allowing the cam to walk around which ruined my brand new Rhoads lifters. Not to mention pistons bearings and ect. They didn't torque the cam bolt down nor locktite it either, the f***ers. I wanted to catch a Greyhound bus to Phoenix and chuck a brick through their window!!! So, that's why I really don't want to let a stranger work on any of my vehicles.
Not likely with a turbo downstream though. Worse case is a bent valve stem. This can cause a pushrod to turn into an alien, and burst through your... well you know.
Wow, that is good to know, I'm glad to hear that, it makes it easier to observe the valve train while it is running. now I got another reason to like IDI engines! 
