Loganshaw_6
Member
It appears that something may potentially be wrong with my brain. Some may say it's not a bad thing others call me ridiculous but I just couldn't stay away from owning a 6.5. I picked up a running 1993 k3500 single cab 6.5 with an nv4500 209k miles about 2 weeks ago that I was told needed a flywheel by the previous owners. Starter grinds when you turn the key and I've determined that it needs a ring gear which I was going to replace today but got distracted with replacing fuel lines and wiring the lift pump to ignition power. Anyways the point of this post isn't about the transmission or flywheel but about the engine. It still starts it just requires 2 vehicles and a tow strap lol. I drove the truck before I purchased it and found that it would go about 40 mph wide open, smoked white and ran rough. My immediate assumptions were lift pump and possibly injectors. Handed the guy $1400 loaded it up on my trailer and took it home. So far I've done a new lift pump, fuel filter, air filter, rubber fuel lines to the drain valve and the IP, clear fuel line at the IP, and new batteries. I drove the truck to a buddy's house yesterday so we could put it on the lift today and pull the transmission to do the ring gear and noticed that the truck seemed to not have great power. The power came and went almost as if the lift pump wasn't working properly. I wired the lift pump to ignition power, replaced the hoses that I stated above earlier today and installed a boost gauge. About a minute into the test drive the problem came back. I parked it in the driveway opened the drain valve while the truck was running and the truck died. The lift pump was still running which is slightly confusing to me. The amount of fuel coming out of the hose seems kinda weak in my opinion which leads me to believe that maybe I have a clogged tank sock? clogged up lines from the tank to the filter? While replacing the fuel lines I did pull the fuel filter housing and clean it out I saw chunks of what looked to be crud and rust in it maybe, I should have blown out the fuel line but I was too eager to hear the truck run. I don't recall if the tank is metal or plastic in this truck but I'm thinking it needs to come out. The white smoke went away after making all these repairs until I was ready to shut the truck off and it began to stumble didn't want to idle well. To try to tie up this long post I'm wondering at what point should I consider replacing the db2? What is the lifespan out of one of these pumps? Obviously I'm going to make a turbo master and I'm going to want to turn up the pump as well. I'm thinking that I am going to end up throwing a set of injectors from Napa into this thing since I have a great commercial account and a fantastic hookup with them and I can get a set of reman injectors for $120 and a new set for I had my 98 6.5 and went through hell with it. Some of you probably remember but we got it running I'm just happy that I'm not messing with a DS4 truck this time.