Skool me on starting

[wmoguy]

For the first few hundred miles after the top end rebuild on my truck it started like crap. I had thought maybe I had an air intrusion or possibly a GP issue (even though they are literally brand new)

Fast forward to now, maybe 500-600 miles later with some MTN towing, it now starts with a flick of the key even cold in the morning. It did take this trip to get it to this point. It would seem to me if I had some air in there it would've worked it's way out faster than it did.
For nothing more than my knowledge, any ideas on why it's now starting like a champ whereas a few days ago no dice?

 

[icanfixall]

Starting like crap leaves a bunch of informationon the table. So lets try something. Does the starter need to crank for a long time before it would start.... Did you see any smoke from the tail pipe... If so what color was it.... My feelings as to why it kicks off right as you touch the ignition is the fuel system is staying pressureized in the injection pump and the injectors. Do you run a cocktail for fuel... If not maybe some atf in the next tank full will clean out any buildup in the pump. My truck could sit for days and start in about 1/2 turn of the engine... Thats not happening anymore with my battery or whatever issues I'm having.... If there is a fuel leak between the lift pump and the filter it will bleed down the filter. No amount of pressure from either an electrical or mechanical pump will change the issue.

 

[wmoguy]

sorry I should have clarified

before it took a good 5-7 seconds of cranking to start. Now maybe 1 revolution and it's running.

I still have a slight grey'ish haze going on once started (when the block is cold) but that goes away once warm, this is starting on Diesel. Now I do have to time it, which I'll be doing tomorrow evening with your timing meter you sent (gracias!!)

 

[ocnorb]

Could it be that loading it and running it hard helped seat rings, seals, etc?? Maybe they just need a good hard thermal cycling?

I've often wondered if daily driving is too easy on these motors- mine always seems to run better after pulling the 5'er around the mountains.

 

[towcat]

Could it be that loading it and running it hard helped seat rings, seals, etc?? Maybe they just need a good hard thermal cycling?

I've often wondered if daily driving is too easy on these motors- mine always seems to run better after pulling the 5'er around the mountains.

these motors are happy when they have the crap beat out of them. load 'em and work 'em

 

[wmoguy]

Could it be that loading it and running it hard helped seat rings, seals, etc?? Maybe they just need a good hard thermal cycling?

I've often wondered if daily driving is too easy on these motors- mine always seems to run better after pulling the 5'er around the mountains.

Makes total sense OC and TC

This would have been it's first heat cycle and Im tellin ya it runs so much smoother now

 

[Agnem]

It's possible for an advance piston in an IP to get stuck in the retarded postition. That can make cold starting a ******.