Help Needed 7.3 Bad Injectors? Glow Plugs? Relay? All of the above?

[CLBurell]

7.3 only mods are intake and exhaust

Truck has gotten worse over the last few years and now will not start at all since it has dropped below 40deg here. Last year would only start during winter if I kept it plugged up overnight.

Over the last month it has been running pretty rough on startup and if I do not let it get up to full operating temp before driving away, it will start puffing black smoke within the first mile and die. Usually dies heading up a hill near my house as soon the transmission changes gears. It will start back up after cranking it for 30-40 seconds.

My thoughts are several bad injectors and glow plugs, but just wanted to get some other opinions. Also are there any good writeups anywhere on replacing injectors/glow plugs.

 

[JRJ04]

What year is your truck? How many miles? Fill out your sig so we know a little more about your rig.

When is the last time you have changed your oil and filters (mainly fuel filter)? If it gets up to operating temp and things are ok, I would not think your injectors are bad. Glow plugs could be a likely case. Depending on how many miles you have, you might be due for injector o-ring replacement.

 

[CLBurell]

2000 F250 with 172K miles

Oil and Filter are due for a change

Fuel filter was replaced around 150k when I had a leak from the orings from the purge valve I replaced the filter.

 

[JRJ04]

I would change it all again. A bad batch of fuel can ruin a filter quick. Change everything out and then lets go from there.

 

[Bad Night]

My 2000 did the same thing , wouldn't start unless plugged in and if it did happen to start it would surge really bad then die , put new glow plugs in , fixed her right up .

 

[JLDickmon]

did the Intake Air Temp sensor get put back on when the intake was replaced?

 

[BIG JOE]

did the Intake Air Temp sensor get put back on when the intake was replaced?

X2. Good point.

 

[xtrahappy]

Hi guys, May I suggest glo-plug relay. And battery check. Worked for me..
Yall keep up good work love reading all the post. Thanks

 

[bigrigr]

X2, make sure the glow plug relay is working before tearing off the valve covers.

 

[bears4x4]

Can those get clogged, I think I just zip tied mine up next to my dyi intake