2003 250 hp ISB will not start unless given a shot of starting fluid. The dealership replaced the lift pump under warranty a few years ago and placed it in the fuel tank. I have fuel pumping to the filter bowl. The only code showing from the key switch/odometer is P0839 4WD module sensor high, which I'm sure has nothing to do with the problem at hand. Truck has 182K+ miles on it. I'm second owner since it had 40K. Is this an injector issue? How do I tell?

 

Prior to failure it did get slower to finally crank over and start. I replaced a bad battery. The coil light goes directly out once the system checks are complete (ck engine etc.) when you key up to prime the fuel system.

 

Has it lost power?
Did this condition occure after the dealer worked on it?
Is it cold enough for the heater to turn on?

180 is premature, but you could have low compression. Or the injectors are going bad.

What kind of smoke are you getting when it starts?

Be careful with that ether. Yiu could launch the truck if that heater kicks on. . .

Welcome!

 

Power is ok, problem started a week ago.
No real smoke at start-up and trust me I thought about the launch (what temp does the thing come on?).
How can I determine if injector(s) are the problem?
This drives me nuts, I supected the heater may not be coming on to aid in combustion? At this point I'm just not sure but it's my most dependable ride and work horse.

 

Doubt it has anything to do with the heater. The 3rd gen trucks will start with ease without the grid heater. Sounds more like a fueling issue. The engine mounted fuel pumps on the 03's are junk

 

you do not need the grid heater in order for the truck to start. My truck has 15:1 compression and has not had the grid heater installed in over 2 years. I think you have a bad injector

 

OK, so it sounds like an injector...What is the best way to confirm this? How can I test each or all? Running a Banks six gun w/speed loader would that matter on testing or replacement injector choice?

 

The first thing you need to do is remove the Banks.. The chip very well could be the problem. A lot of problems are solved by simply removing programmers and chips. The computer programming in them can fail after time

 

I doubt it's the heater too. I just wanted top find out if it started easier.

I agree. Meant to say that

 

Given the information you provided, it sounds like an injector(s) issue. It may only be one;however; you should have them removed and tested. I recommend you have them tested by F1 Diesel (Don), via one of the dealers that market his products. I also recommend you upgrade your fuel filtration as well. If you only have the canister for the fuel filter/ water stripper, I suggest you use the Baldwin PF7977 or Hastings FF1260 which are the most efficient fuel filter/water separators you can purchase for the OE canister. The Baldwin PF7977 or Hastings FF1260 are rated 5um absolute(98.7%).

 

Injector or rail pressure sensor.

 

The early ISBE engines in 03 and 04 had a lot of fuel rail pressure overflow valve failures. Can't remember the exact name of the part, but its the pressure relief valve for the High pressure rail. It fails and won't maintain fuel rail pressure.

 

I had an 04 and never had that porblem. Just injector pumps leaking

 

When the 3rd gens first came out, they were getting a bad wrap as if it wasn't the lift pump failing it was this pressure relief valve. Many trucks on the hook to get repaired with a simple part. have to search on it.

 

In 04, they were in the tank