Hard Starting. Smooth when running though. Any suggestions?
#1
Hard Starting. Smooth when running though. Any suggestions?
Ok so here it goes. I installed an Air Dog II fuel system. Altered the in tank lift pump like instructed. Truck would start and run fine until it would get near half a tank and it would start sucking air and acting erratic. Simple fix keep it above half a tank. But i wanted to fix this issue completely so i ordered a pre-made draw straw fuel module from Vulcan Performance. Installed the fuel module with no problems. Truck fired right up no problems. The next day truck fired right up again no problems. Later that evening it seemed as if it lost prime, it took atleast 5 minutes to get the truck fired up. Then again later it took atleast 15 minutes to fire and seemingly has been getting worse. I have no codes. I've verified i'm getting plenty of fuel to the injection pump by removing the line and turning the key on. I've also broken lines free at the injectors and made sure i'm getting there while cranking. This is where i'm stumped and considering it being a electronical issue because i had 4 injectors primed and still the truck wouldn't start. I'm leaning towards a possible crank sensor but i didn't look to see if its registering RPM when cranking, tomorrows project. But if anyone has any input at all it would be appriciated. Thanks ALOT for your time.
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My only question with that is why would it of started fine prior to installing this new fuel module and now it not? I've had it hotwired the whole time it's been on my truck (7 months maybe). I mean it would be something to try but it just doesnt make sense. I just figured it would have been a problem this whole time if that was the case?
#6
#7
Yea I'll have to check that but the thing is if it's gettin fuel to the injectors, I cracked 4 line, and has fuel comming out of them the truck should fire. I mean it might take off rough but it should technically fire. That's the only reason i'm starting to wonder if this is something different than a fuel issue.
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OK, I have an 02 and this is my first Cummins. I'm not real knowledgeable on diesels, but a pretty good mechanic. My wife is trying to get me to quit cussin', but this darn thing is hard to start! Morning, 3 15-20 seconds cranks. Warm after it sits 30 minutes, 2 12-15 seconds cranks. I did some reading about about the fuel return line (is is stock with 112K miles by the way) and I think it may be leaking. I tightened up the fitting on the T, but I think it might be leaking where the plastic line attaches to the metal line. How does that connection work?? Is it an o-ring? How do you get it apart? The banjo bolt on the back of the head seems dry, so I really don't think it's leaking. Any help is appreciated!!
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gwmeyer
12 Valve 2nd Gen Dodge Cummins 94-98
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05-14-2015 12:46 PM