Just when cold...

[oilersman]

I've read up and asked many questions and this is what i seem to come up with...
1St the problem: Only on cold mornings(freezing temp) i wait for my glow plugs to finish its cycle of course. Truck will start but only run for about 4 seconds, i will have to do this at least 3 times before it will continue to run. When it does stay running, the first 2 minutes, the truck will idle as if a cylinder or two is dead.(Maybe faulty glow plug there) After it warms up it runs awesome and continues to start perfectly until it gets too cold.

Solution: Change the glow plugs, see what happens(already bought them). Ive got new batteries in and i believe the relay is fine. Havent actually tested it but i've got new plugs and am going to change them anyway.
So anyone with experience on this matter have a few pointers or if you think i've got something else to look at, please feel free to input anything. Thankyou for any help.

[Dave]

I am betting the relay is bad. How many miles on the truck?

[vitalidle]

Might be worth checking the relay first its an easy check and you can put the glow plugs on the shelf for a rainy day! There is two large posts on the relay you should have 12 volts from the battery on one post and after you cycle the key to the wait to start you should have 12 going out the opposite post. Check with a light or voltmeter.

[orangesbc383]

More info what year?

[Dave]

I just saw this was in the 6.0 forum. How many miles on the truck? if there is less than a 100,000 this should be a warranty issue

[oilersman]

oh ya, 2003 f350.
i will try the relay first.
Trucks got 190000 kilometers on it.No warranty.
thanks for the replys.

[n1njazx7]

When my 03 6.0L done that, it had two bad injectors.

[oilersman]

where would the relay be located?

[vitalidle]

I gave you some wrong info as I see you have a 6.0 and they have a glow plug control module. The only way I know how to test is with an amp probe. Test one bank at a time the current draw should be 10-12 amps for each glow plug. The bank that draws the lower current will be the problem.