1st start of the day takes a few tries. I turn over for 3-4 seconds let off then do again. It takes 3-4 of these to start. After driving 10 minutes into town it restarts if I only stop for 30 minutes or less. If over 30 I have to turn key over twice for the 3-4 seconds. I just changed glow plug relay. No help. My truck has 280,000 miles+. It has been 45-55 degrees during 1st start. Starter is not to old 2 years or less. New altenator and batteries been load tested last month when altenator was changed. Original glow plugs still in. Fuel filter was changed last month K&N air filter is clean.

 

When you get it started, does it shake a little bit? At 280k, I would dare to bet you might have a glow plug or three on their last leg. Mine started the truck pretty well, upto about 205k, when I replaced mine, when I did injectors. How does the truck run/idle when warm? And whats your fuel economy like? Still on origional injectors?

 

Yes still original injectors. A little shakey when started. When warm not to bad. Did u replace glow plugs urself? I can do some stuff but not tech stuff? How long if u did it urself

 

Yea, Ive spent some time under the 7.3l valve cover lol. In order to replace the glow plugs, you pull the intercooler tubes, then the valve covers, then you pull the wire off the glow plugs, then loosen them and remove them. Manually crank the motor over by hand a few revolutions, to get any oil that went in the cylinder, then reinstall and reconnect, then valve covers back on, then CAC tubes back in. The CAC tubes, and boots typically need cleaned, before re-installation, to get the oil off, and not blow off on your next hard throttle application. Not terribly hard, just time consuming.

If I was you, I would start by replacing the glow plugs, and running 5w 40 synthetic oil. See how it acts after that. Those being the cheapest, and easiest ways to get your truck to start easier when cold.

 

Thx for info

 

Let us know what you try, and what you figure out. Were glad to help if something comes up, and were sure glad to know for sure that we fixed your problem!