View Full Version : Will not start after engine warm
jc6945
Jan 8, 2011, 12:15 PM
My 03 ford 7.3 sometime will not start after it has been running for awhile it acts like it is not getting fuel I can wait for a few min and it will start right up. It does not happen all the time just once in awhile. I have check the codes and nothing show that there is a problem. Any ideas on what's going on
TxGreaseMonkey
Jan 8, 2011, 12:23 PM
Worn fuel pump? Read Item 6 below:
https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-8.html#post1415281
Ensure the engine oil and filter have been recently changed. Oil level and condition can affect fuel pressure on PSDs.
jc6945
Jan 10, 2011, 10:48 AM
I change oil every 5000 miles so that is not the problem but thanks for your help any other ideas?
TxGreaseMonkey
Jan 10, 2011, 11:14 AM
Worn fuel pump?
imthatguy
Jan 11, 2011, 05:43 PM
Are you using a higher viscosity engine oil than Ford suggests? Or an additive like Lucas? The injectors on your engine are pressurized by the engine oil after it goes through a high pressure oil pump. If the oil gets too thick as it heats up, the injectors won't operate correctly, and will not inject the proper amount of fuel.
jc6945
Jan 11, 2011, 07:32 PM
I have used the same oil sense the truck was new this has just started in the last few weeks. I use delo