2005 Ford 6.0 diesel wont start after it sits for 24 hours?

Question

My truck runs great...unless I let it sit for 24 hours. The only way I got it started last time was replacing the batteries. The batteries are less than a month old and it turns over like it should, Good fuel pressure, but even at that it wont start on starting fluid. I am out of guesses. The starting fluid should bypass all fuel issues...I am lost, any help??????

Answer 1

Could be the glow plugs, so try plugging in the heater overnight to see if that helps (will still crank long but will start). It is also (my guess) losing fuel (slight leak at the injection pump) or drawing in air. The fuel filter is another, where the nuts are fastened to the filter itself (where the fuel lines are screwed to) are known to leak a bit (particularly aftermarket ones), which is enough to pull in air. So if you replaced that recently that would be the first place I would look. Once that happens then the system has to prime itself by bleeding out all the air from the fuel filter forward through the injector pump and injectors, that is no small task. The result is you wear your batteries out trying to get it started and once the engine starts cranking slow the injector pump doesn't get enough volts (all going to the starter) to turn on the fuel. So once the engine starts cranking slow you need to stop and recharge the batteries.

What I have done in the past is pull your air filter and clean the valley in the intake manifold below the injection pump. I keep it simple and use a long screwdriver / rag and brake clean. Then once it is dry check in the morning and see if it is wet again. If it is then either the fuel filter or inj. pump is leaking (fuel seaks lowest point so sits in the valley). Then hopefully it is the fuel filter since that would be the cheapest repair. To help get it started you can pull the return hose and valve out of the top of the pump. It will allow some air out. And if it does start while the hose and valve are out, don't worry it is only about 3-5psi there so not much is going to come out. Once the engine is running well you can shut it down and reinstall the valve / hose, Just didn't want you to think the fuel was going to come shooting out.



I rule out injectors since you said it runs great once it is started. Typcially if it is injectors then it would not run great.



You also mentioned starting fluid. That is what made me consider glow plugs. Regardless of what the problem ends up being be very careful of starting fluid. Just a bit too much can break a piston in a split second so I would not recommend using it.



Sorry is long but there are things to keep straight.



Good luck and hope this helps.

Answer 2

Computers run everything on vehicles today and no amount of starter fluid would start the thing if a computer was not doing what it is supposed to be doing.

Take it to a repair shop and have them do some diagnostics on it especially after it was to sit for 24 hours.

You can get an upfront estimate on how much this will be. I would find a private diesel shop because I think that dealership repair shops rip off its customers on a daily basis.

Answer 3

Any Ford/Navistar Powerstroke 7.3L or 6.0L requires the following three main conditions present to achieve successful starts: engine cranking RPM @ 200 or more, battery voltage not to decrease below 9 volts DURING cranking, and MINIMUM 500 PSI of ICP (injector control pressure). On a 6.0L the FICM (fuel injection control module) has to indicate your CMP (cam sensor) and CKP (crank sensor) to be SYNC: YES as well. All of the above information would require use of a scan tool THAT READS LIVE DATA to access. Normally, no-starts on a 6.0L is due to low ICP pressure, that can be caused by the STC fitting leaking, an injector that has lost its circlip on the top, or one of the rubber o-rings has torn in the high pressure oil rail. The above conditions usually cause a no-start when warm though, so this might not be your problem. Did you check your oil level? What is the level, and condition of the oil? A 6.0L takes 15 litres of 15W40 engine oil every oil change. Any less, can cause hard-start/no-start issues, and any more will cause lack-of-power issues. For more info, please read the following links:



http://www.forddoctorsdts.com/photographs/index2.php



http://www.forddoctorsdts.com/articles/article-05-17.php



Hope this helps.

Answer 4

Well many things can cause this issue so stat with least expensive and go forward. Check plugs and wires ignition module can cause this also air filter fuel filter and timing maybe computer. I would disconnect battery and reconnect it then check glo plugs and fuel filter. Inspect hoses top of motor for leaks they are called vacuum lines. Fuel pump could be bad so turn key to on without stating have someone listen to pump by the gas tank to see if its humming. If i were there i might have been able to help you

Answer 5

6.0 Powerstroke Slow Start

Answer 6

These engines have so many electronically controlled devices, and sensors.......it is nearly impossible to troubleshoot without the dealer computer diagnostics. Take it to the dealer.

Answer 7

change the glow plugs

Answer 8

http://en.allexperts.com/q/Truck-Repair-2233/ford-diesiel-trouble-starting.htm



try this its about the same trouble