Confucius say; the tech should have found the bad muffler bearing a long time ago....

seriously, I'm not feeling like the dealership is going to warranty your actual issue if they ever actually do find it. So I would take it to somebody more performance oriented and get aftermarket go fast goodies vs stock stuff.

With an aftermarket converter you can get false miss fires. I usually do a crank re-learn and also have to adjust miss-fire tables in the tune for vehicles with cam or after market stall.

Does it regardless

I wouldn't even bother messing with the dealership. Ford would void the power train warranty in a heart beat if you brought in your vehicle to them with all these mods. No doubt you also have a tune on it?

Did your tuner do a crank re-learn after you installed the new pcm? Thats the first thing I do when I install a new pcm in something. I have seen crank re-learns fix some weird issues before.

Truck is untuned at this point.

Crane makes a valve spring compressor tool you can use while the head is still on the block. Looks like it compresses both intake and exhaust valves at the same time for one cylinder.

http://www.summitracing.com/parts/CRN-99472-1/

Well, i'ts now 1PM and they haven't called me. Think that means it still won't run with stock plugs/wires?

That little friggin thing costs $114.95? WTF? I'm in the wrong business.


And Gerald, does that mean that you concur on our diagnosis of valve train and not ignition?

Maybe it is just a coincidence, but this is why I'm afraid to tune my car, or add some other parts.

get a good local tuner (JP) that is willing to help you out and there isnt an issue

tell them to do a crank relearn (has to be done with efilive or a tech 2) and see if it fixes the problem

That's why I took it to them, man. They're the professionals. What do I know, right?

I suggested it yesterday, and he said he did it. We'll see I guess.

From what I've been reading in this thread, the above statement along with many other are incorrect.

430 and not one phone call all day. Hmmmmm......

does your phone make calls too or just receive them? If it can make a call out than call them and check. Don't wait around for them to call

The cost of the tool will be chump change compared to what Hendrick will probably end up charging you for chasing ghosts on their end. I believe JP has one of those tools that can be borrowed for a minor fee to keep from purchasing one outright.

Valvetrain is about the only area left to dig into other than unplugging the knock sensors via the plug at the rear of the intake and going for a ride. Unplugging the knock sensors will back the timing up some, but still leave enough to twist up to the top of the tach.

It isn't all that bad to get a valve cover off. It just looks intimidating with the coil pack rack and heater hoses run across the top. Its probably just as hard to get the rear plug out to put an air line to it to hold the valves up.

Rob (MonteC) might lent you rent his spring compressor.

I bought the right tool made by rsi(i think) for the ls engines when I did my z06 spring swap. You will be hurting if you get a cheap one. The right tool for the job makes things so simple.

What size converter? I had to have my misfire tables adjusted because it was breaking up at 4500 rpm