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On a '97 F350 crew cab 4wd 7.3L, dual tanks, w/ about 200K miles - it has become hard starting when cold; i.e. engine cold, not low outdoor temperature. Sometimes takes two cycles of glow plugs. Also makes a brief puff of white smoke on starting. Throttle response seems to lag until it warms up (3-5 mins.). Once warm it runs normally.

Fuel filter replaced recently. Use LUCAS fuel additive periodically. Does it need injectors? Or is there some other problem?
 

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same

I have the same truck and same problem cranks for a while then big white cloud but now its getting really bad and it cranks for about 20 seconds or so some times you ever figure anything out???
 

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Check your glow plug relay, make sure your getting power throught it, if not then replace it quick and easy. If getting the correct power through then i say your promblem is with the glow plugs.
 

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CAUTION!!!!!!! I had a similar thing happen. DO NOT cycle the glow plugs multiple times (at least I am pretty sure that is what caused my problem). It pretty much turned out that my GP's were shot. This actually killed my starter trying to crank it to long and I think it also killed the alternator, though that may have been unrelated, but it all happened at pretty much the same time. The worst part was that when I was replacing the GP's one became stuck in the head and actually came apart, necessitating the removal of the head (big pain in the ***). I was told by an old mechanic that had been working on the International motor since it was developed and he said that cycling the GP's probably caused them to bubble and this is what made it get stuck in the head.
 

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rock removal technition
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the lack of power and amount of smoke after running along with it running better when warm points to bad injectors.
 
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