need glow plug advice

[Heavy Metal Toy]

Truck in my sig is experiencing occasional hard start in the mornings- outside temp anywhere from 30-50* outside, does not seem to make a difference. I'm sure it needs new glow plugs. I am also wondering if I should replace the controller. When I first turn it on, the wait to start light will come on and pull voltage for 5-10 seconds, then cycle off for a couple seconds, then come back on for a couple seconds. It will repeat this cycle of coming on and off for about a minute, whether the engine is running or not.

2 questions then-
Should I replace the controller? If so, who's controller is best?

Whose glow plugs are best? Heath carries the Bosch for $20 a piece, and Kennedy Diesel has some for $10. Obviously I would rather get the cheaper ones, but I don't want to replace these again for a long time and will pay more for the Bosch if they really are better.

Your advice is appreciated.

 

[Woody35]

i would get some bosch duratherms or ac delco 60gs. if heath is too much for you i would go to rock auto and find some. thats what i did. i went to the dealer for my controller

 

[packratt]

That's SOP for stock glow plug operation. It will cycle for 10-15 seconds allow plugs to cool then do it again. Once truck starts it will cycle a couple times if it is cold.

 

[Odlaw]

yup, that is normal. I've had mine cycle (after starting) up to 8 times when it's below about 25 F