In the continuing sagga of my Inj. pump, After replacing my pump with one turned up for a turbo, having it timed, turning it down and replacing a bad control unit, It starts great when cold with
no smoke and the control unit cycles 8times after starting. (the old one only cycled once or twice after it fired.)All well and good. HOWEVER!
I cannot get it started after it's warmed up without manually firing the plugs for 5 to 10 seconds.
I have messed with the Advance for optimum ecceleration and get blue smoke when I excelerate.

I assume it's time to get the injectors tested unless there is some enlighting advise to the contrary.

Thanks........AlanT

 

My truck had the same trouble when I got it. It turned out to be the starter. Here's why:

When the truck is cold, it does not hav as much compression, and the glowplugs are red hot to ignite the fuel.

When the truck is warm it has more compression and no glowplugs, and the starter can not handle it.

To see if it is the starter, crank engine without the glowplugs(When Warm). If the engine is trying to start then the starter is not spinning it over fast enough.

 

It does try to start when warm without the plugs however a few days ago I pushed the glow plug button while driving and the truck surged slightly.(wondering what's up with that?)
Im thinking if it's a starter problem it may be the Batteries cause It was starting fine before I made all the recent changes.
And the batteries seem a little week to me. besides the starter is only 3years old and cost 450.00....I hope it would last longer than this.

Thanks for the reply......Alant

 

I may have your answer! My son has A 97 F 250 and was having the same problem, he could plug in the block heater it would start right up drive to work, then go outat lunch tme, no matter the temp. and it would not start. He took it to the dealer they found A relay to the glw plugs had gone bad, they replaced it under warrenty at 69,000 miles at no charge. I hope this helps you.
(Catfish)

 

 

I read this on a website:


My 1995 7.3 PowerStroke does not start when it is hot. Cold , it starts right up. I had it back to the dealer at least three times and they couldn't find anything wrong. To be fair with them, the problem would not occur when they had my truck. The problem mostly occurs when I tow my trailer or the engine is worked hard. We pull off the road, have lunch and the engine won't start until it cools for about two hours. This is very annoying. The people at the dealer are trying to help but they have not had other vehicles with the same problem. I replaced the fuel filter, air filter, and changed the oil every 3,000 miles. The last oil change I even used synthetic 10W30 oil to see if that would help correct the problem but I think the problem is getting worse. Please help!
Travis Cooper
Phoenix, AZ


Dear Travis,
We were called into an ambulance fleet that was experiencing the same problem you are. Here is what we found and what we recommended to solve their problem. We discovered they also were using 10W30 and 15W40 engine oils in high ambient temperatures. Once they switched the oil to a straight 30 weight API classified CF-4, the problems were gone. On the PowerStroke engine, high pressure engine oil is used to activate the injector so it can spray fuel in the cylinder. When you stop the engine after towing the trailer, the engine becomes extremely hot; this is called "hot soak". The engine oil, fuel and coolant temperatures rise dramatically. When the 10W30 oil is subject to this heat it becomes thinner and it is difficult for the high pressure oil pump to create enough pressure to operate the injector with the thinner oil. I would suggest you change your oil to a straight 30 weight and I am sure this will solve your problem.