Engine/Transmission (1998.5 - 2002) changed fuel filter and now it wont start!!

[BWagnaar]

My buddy has a 98 24-Valve and he just changed the fuel filter and now it wont start! He checked the codes and came up with a 1693. he checked with the key method, a kragen scanner and with a super chip and the only code that came up was the 1693. He tried cycling the self-prime about 5-6 time and tried cranking it for about 2 minutes. He cracked the fuel line at the VP-pump and waited for the air to come out and then tightened the line while the lift pump was still running... . Any ideas??

 

[MHagen]

im guessin that the lift pump is not working.



Mike

 

[Wiredawg]

Has he done this before on this truck? After changing the filter, did he leave the top of the fuel filter canister cracked and bump the starter to cycle the LP to fill the fuel canister? When he craked lines at VP-44, did fuel flow? Although I've never had to crack lines an any of my trucks, I believe you should crack cyl 1, 3 and 6 at the injector tubes to bleed the lines.



I believe code 1693 is a catchall PCM code the tells you the ECM has set a code. Finally, a friend of mine had a 99 and he overtightened the canister and caused a small crack that cause it to suck air in. Hard starting and rough idle.



Hope this helps,



Good luck, Wiredawg

 

[obert]

Can you hear the LP running?



Sometimes these fuel systems can be a real pain to bleed. If any air at all inadvertaintly got into the VP, you will deffinately have to bleed the injector tubes. If you open 1, 2, & 3, you'll get evry other cyl in the firing order and should be enough to get started.

 

[Cummins724]

I never cracked a line when changing the filter... . just bump the starter on/off a few times & you will hear the FP run. You will hear a change in the sound of the pump after a few cranks & she is ready. If this doesn't work... . crack open #3, #4 injector lines at the head & bump the starter on/off until the lines flow fuel with no signs of air.

 

[johncameron]

Can you hear the LP running?QUOTE]



If it is a stock LP it's possible that it's turning but NOT pumping



Same thing happened to me, now I have a FASS II pump.



Time for a FASS.



JC

 

[BWagnaar]

Thanks everyone for the info, he can hear the pump running and i dont think he blead the canister first. His lift pump did go out about 9 days ago and has had the replacement in his truck for about 7-8 days now. I thought it might be a deffective pump?

When you crack the lines, should you loosen them by maybe a 1/4 of a turn or full turn, cause i thought there is thousand of lbs of pressure behind these things and i kinda like my eye sight!

 

[BWagnaar]

Well i drove up to his place and checked it out. We first tried to bleed the line from the LP to the filter canister, that had tons of air in it and took about 4-5 air bleed cycles to get fuel squirting out. Than I cracked 1,3,4 injector lines cause the intake was in front of #2, we turned it over for about 15-25 seconds and closed the lines. Charged the batts cause they went dead... Cranked it for about 4-5 seconds and it fired up!! It had white smoke coming out for about 10 minutes but after it warmed up it was fine.



Thanks to everyone for the advise.

 

[HighRanger]

Pain in the arse isn't it.

 

[Big Rich 01]

Yep

Next time he changes it, tell him to get a gallon jug of fuel and pour it in the filter housing after he puts the new filter in. Like on class 8 trucks you have to fill the fuel filter up before you put it on. this "should" prevent air getting into the lines. I always fill mine and and open the fuel cap after I change my fuel filter. It works for me, hopefully this helps.

 

[Cummins724]

Next time he changes it, tell him to get a gallon jug of fuel and pour it in the filter housing after he puts the new filter in. Like on class 8 trucks you have to fill the fuel filter up before you put it on. this "should" prevent air getting into the lines. I always fill mine and and open the fuel cap after I change my fuel filter. It works for me, hopefully this helps.

Good call... . I forgot to mention filling the filter housing with fuel before installing.

 

[redram3]

I just drain canister in to a mason jar and use to prime new filter, works for me.

________________John

 

[MMerlino]

Getting the Air out of the Fuel System after Servicing.

For those who have ever experienced concerns with getting the air out of your fuel system after changing the fuel filter here is a good way to do it: Pour as much fuel back into the fuel filter as possible prior to sealing the lid. Now here is the trick: Normally turning the key to on will cause the pump to run approximately four seconds. This can be done numerous times or turn the key till the starter motor just begins to turn and let the key go to run PRIOR to the engine starting. This will fool the system :-laf and cause the fuel pump to run for 25 seconds. Have fun…