Before  I find a mechanic or go digging into it myself, maybe someone out there has had  this same problem and knows the answer.
I have  a relatively new John Deere 4045 Turbo in my Trawler, 1900 hours, but they are  all mine and all over the last 20 months. I had it installed new when I  bought my 1983 De Fever a few years ago. It has always run perfectly, including  starting. Always starts in a fraction of a second. This started after I changed  oil a few days ago, but realistically, I do not think that has a thing to do  with my new problem. This is, however, the first time I used a non John  Deere oil filter ( I used a Wix). I could see that if there is a back flow  valve in the filter not working and the engine momentarily has no oil pressure  that could be the problem, but this engine does not shut itself down for  low oil, it only sets off an alarm. Besides, when I first change oil filters  and it takes a while to fill up and get pressure, the engine has always run  fine. The actual problem is that engine starts immediately, then  immediately dies. Then I crank it for maybe 5 to 10 seconds, and
it  starts runs perfectly all day. While running there is no speed variation or  any such thing. Just runs perfectly as always. It seems like it starts and then  immediately runs out of fuel, then with some cranking, gets fuel again and stays  fine all day. No vacuum reading on the filters, no apparent leaks in the  fuel lines. No leaks from the weep hole on the lift pump. If I restart the  engine after it has been shut down for a few minutes, as when refueling, it  starts and runs fine. It only seems to do this when it has been off  overnight.

Thanks  in advance for any suggestions.

Jake

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Jake,
The oil filter is not the problem; I've been using Wix filters on my Deere
4039 natural for years.  Perhaps in changing the oil filter you bumped or
moved some part of the fuel piping.

It sounds to me like an air leak in the fuel system.  Air leaks in, fuel
does not leak out, so it's very hard to find the problem.  The leak will be
in the area that is under vacuum, between the tank and the fuel lift pump on
the engine.  Try tightening every connection in this area, and the problem
may magically vanish.  When my Deere had only a few hundred hours on it, I
had a similar problem.  When I put my wrench on one of the engine-mounted
fuel pipes, it turned a full quarter-turn, and the problem went away.
Turning the nut required breaking the factory applied paint around it, so it
took a bit of torque.

Mark Richter, m/v Winnie the Pooh
homeport Ortona, FL on the Okeechobee Waterway
lying Elizabeth City, NC