Hard starting 84 6.9. Just redid heads and gaskets. Have to use starting fluid to cold start. Checked glow plugs. Redid the timing after it was messed up from gear removal. Not sure what else it could be. I keep getting air in schraeder valve but cant find any leaks or loose clamps. Thanks

 

Foot to floor while turning over and prime the filter(s) with atf ... its thicker and will help pull a vacuum in the fuel lines

 

There isn't enough temp in the glow plus, if you know the fuel is right. I had a 6.9 that did that. And come to find out it was the solenoid. And also the amps
Are not high enough. I always recommend double 1000 batteries.

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Also 4x4 was right one half to full down on foot feed.so he can breath.

 

Return line fittings? And be sure to crack open 3 injector lines, crank till there's fuel

 

or 10-15 seconds ... don't cook the starter ..

 

My bad haha, did not mean a continuous crank that is the best way to get a new starter though

 

The 12v system burned all the glow plugs i bought since it was a 6v. I was able to put a couple of the old ones that still worked back in and it fired right up. So pretty much i just need to find some higher voltage glow plugs instead of a stock replacement.