So, I decided to do the " timing bump ". So I tried to make my own s wrench. 1st attempt. NFG. So I looked up a picture of a cummins wrench. ( thanks to flashgorden for the pic in his member photo's ) Tried again. Bingo. So there went an hour. Got the bolts loose and pump no move. Tap tap, frig, wiggle, swear, and finally got it to move only a little. So I played with it and finally got the gasket loose so the pump would turn. Turned it ahead a fair amount, maybe a hair over 1/8th but not to the head. Put back together. Started up and was cold so KSB was also advancing things. A little rough but soon sounded more normal. Had a little more noise at idle. So went for a ride ( of course its raining out ). ran a couple of hard runs. Lower power at take off and could not tell if top end was any better. Traction was a issue due to wet roads. Got to a big hill and wanted to do a long pull up a grade to check egt's. The truck went numb. I could smell fuel so I pulled over. ( after dark, heavy rain ). Fuel was squirting every where. Slammed the hood and headed for home. ( and the dry garage ) Did not make it, she died a couple of times but picked up fuel on her own and kept on going. About a 1/2 mile from home she was all done. So I had no choice but to find the leak and fix it beside the road. The banjo bolt had unscrewed it self all the way out. I had not even touched it moving the pump. Screwed it back in and bled out the injectors and away we go. Got up to speed and by then don't you know I'd be low on fuel. Coasted into driveway and pulled up to the fuel depot. Got back into the garage and the pump had worked its way back about a 1/16. I guess the injector lines had a fair amount of torque on them and had worked the pump closer to where it had started. So this time I took the time to take off the throttle plates and linkage to loosen the lines so the pump would stay still. So for all you guys who say do the timing thing its easy and you will love it.. I will see tommorow if I like it. It may go back to stock.

 

Wow. It rained? Can you send some our way out here to SoCal?
Trust me, stick with it and work out the bugs. You WILL love it.

 

Wow that sounds like a disaster. When I did mine I used a ratchet strap a 4x4 a rubber mallet and didn't loosen any lines and did not have any issue. Sorry your timing bump went bad, but on a lighter not when I did mine I did notice a slight decrease in egt's and also it felt a little more "peppy" with better throttle response. I hope that your "DRY" ride feels more productive for you.

 

Down low feels numb, turbo takes longer to lite but when things get moving it seems to have better power. Egt's seem better. Cold idle is ruff and sounds like a " big camshaft ". Does it change the sound on your trucks? Mine has more of a crackle when it is idling and on low rpms driving. I keep having flashbacks of all the pistions I have blown in my "small block chevy days " by having the timing to advanced. Will to much timing detonate my pistions?????

 

I think you went a little too far. Go back about halfway to where you started.

It's hard to hurt the pistons, especially on an automatic truck.

 

So maybe I missed it but when advancing the timing, does the injector lines have to be removed or loosened or can they "flex" enough to allow full adjustment?

 

I would crack the lines loose, also loosen bolt on bracket. Put a reference mark if there isn't one there already. Just in case you want to return to stock timing.

 

for a 1/8 bump there is no need to loosen the injectors. i don't think it is necessary when you push the pump to the head either. i will let you know about that later today after i give it a try.

 

I've never loosened any lines except the AFC tube.