New here

[keanoknick]

 

[platinum01]

welcome !

sounds like glow plugs or more likely
GPR (glow plug relay).

this might help you...
Stancor GPR replacement Mod Web Page

x2

Good call Bush that is the same thing I was thinking. Welcome to SDD.com Post often

 

[bushpilot]

welcome to SDD

NAPA relay 109 is an automotive realy, basically the same thing as the OEM unit.

The Stancor relay is a 'generic' relay, also rated for much more capacity. Guzzle's page is good on the upgrade. I will be doing that this spring. Its not application specific.

You may also want to take a look at Dieselmann's page on diagnosing hard starts-

PowerStroke diagnosis

other things to check would be oil level (it won't run if the oil is too low),

IIRC, you can run a scan or manually check the resistance of the glow plugs to see if any are bad.

I would also check battery and ground cables to make sure that you have good connections.

dennis

ps: go to the user panel and put your truck info in your signature so we know what all you have done to it so far.

WOW ! Dennis shows the voice of experience and REAL 7.3 trouble-shooting
skills and knowledge.

mine was no more than a GUESS w/ little info to go on...

point made that you really have to do some trouble shooting or youll
be tossin' good money after bad...HOPEFUL that you solve the problem
RIGHT the 1st time (which isnt likely) !

 

[95_stroker]

Welcome to the forums.