Chevy and GMC Duramax Diesel Forum banner

1 - 4 of 4 Posts

·
Registered
Joined
·
6 Posts
Discussion Starter #1
We have hard start 2003 duramax during warm only, will start ok cold engine and hot engine ,partially warm engine let run 15 minutes,sit for 30 minutes will crank no start,rail psi will only build to 800kpa, has had new fuel filter and housing, along with new injection pump, fuel is 36api,you have to prime plunger on filter housing to get started, we installed a clear line between filter and fuel injection control module,no bubbles seen, you can ramp fuel rail psi to 20,000 no problem when truck does start.no codes stored concern is intermittant, we have already dropped tank and found no debris /algea installed new fuel.
:help
 

·
Registered
Joined
·
110 Posts
im sure that there are alot of ppl on here that can help you but, first you need to fill out your singnature so we all know what kind of truck you are talkin about....it just keeps you from having to type it over and over..........lol
 

·
Registered
Joined
·
6 Posts
Discussion Starter #3
We have hard start 2003 duramax during warm only, will start ok cold engine and hot engine ,partially warm engine let run 15 minutes,sit for 30 minutes will crank no start,rail psi will only build to 800kpa, has had new fuel filter and housing, along with new injection pump, fuel is 36api,you have to prime plunger on filter housing to get started, we installed a clear line between filter and fuel injection control module,no bubbles seen, you can ramp fuel rail psi to 20,000 no problem when truck does start.no codes stored concern is intermittant, we have already dropped tank and found no debris /algea installed new fuel. 2500HD chevy silverado, concern has been going on for about 2 months.
 

·
Registered
Joined
·
6 Posts
Discussion Starter #4
2003 Hd Silverado Hard Start

Junior Member


Join Date: Nov 2008
Posts: 5
We have hard start 2003 duramax during warm only, will start ok cold engine and hot engine ,partially warm engine let run 15 minutes,sit for 30 minutes will crank no start,rail psi will only build to 800kpa, has had new fuel filter and housing, along with new injection pump, fuel is 36api,you have to prime plunger on filter housing to get started, we installed a clear line between filter and fuel injection control module,no bubbles seen, you can ramp fuel rail psi to 20,000 no problem when truck does start.no codes stored concern is intermittant, we have already dropped tank and found no debris /algea installed new fuel. 2500HD chevy silverado, concern has been going on for about 2 months.
 
1 - 4 of 4 Posts
Top