3406E missing

Thanks man, a cut out test will be put on the list along with the harness check. It doesn't make any noise, other than the Spartan war cry from the 8" straights!

 

Thank you Mr. Haney!
OK, looks like we're getting a new harness. I'll just replace the thing and eliminate a possibilty for future failure, and hopefully the current problem.

Thanks to all who helped, and I'll try to rebember to update this post after the repairs.

 

Thanks Ashman!

Most of the speculation is pointing to the harness, including your experience, so I definately want to replace it now. Even if that doesn't cure the miss (although I believe it will), I feel it'll be good for my peace of mind, and one step closer to solving the problem.

 

Well, as you all may have noticed, it's been awhile!

I finally got the ol' girl into the shop Monday. (I've been too broke to do anything) The rig went back to the CAT dealership that I've been taking it to, with a list of problems that cropped up/got worse this last week. Today I got the call.....

First the problems:
1) Engine smokes blue/white at startup. This just started about three days ago, and clears up after about 2 minutes.
2) Engine runs very rough (missing 1 or 2 cilynders) at startup. This goes hand in hand with the smoking, and cleans up after about 2 minutes.
3) Engine consistantly runs rough, makes 28-30lbs boost (down from 35-36), fuel milage is 4.8 (down from 7.5).
4) Engine brake runs rough (5cyl), and makes 10-12lbs back-pressure (down from 18.

When I dropped the rig off, the manager agreed with me that it sounds like a couple of the new injectors have failed, and possibly one of the jake solinoids. The phone call paints a different picture....

The technician says they found #5 to be "a dead hole". They swapped injectors with the #6 cilynder, but "the smoke stayed with number five". So, he says I need a head gasket. I asked him how they came to that conclusion? Was there a leak-down test? What were the results of a compression test? There was no leak-down test done, but a compression test was. The results showed no loss of pressure. There is no oil in the water, no water in the oil, no loss of coolant or oil, no abnormal pressurising of the cooling system, no pressurising the crankcase, no blow-by.

There is a "dead hole" but the injectors that we all agreed were suspect are now OK? There are NO signs of a bad head gasket, but they're pulling the head anyways....?

I'm at a loss. I used to be an engine machinist, and this just sounds like they're trying to cover for the crappy work they did previously, or something like that. Or could it just be that I'm sicker-n-hell and my NyQuil sodden brain is missing something?

 

Thanks fellas!

I did double check with the shop manager, and we also talked about prices, and made sure the liner height would be checked also. Lookin' like 18-20K worst case senario.