DB2 stanadyne GMC, Chevrolet Ford injection diesel system troubleshooting guide 6.9l 7.3l 6.2l 6.5l

Basic toubleshooting guide for db2 injection pump on ford and gmc. If you have more information please leave positive feedback for myself and others so we all can learn about this device. I STILL DO NOT KNOW FULL OPERATION OF THIS INJECTION PUMP for how complex its operation is. This is the heart and the brain of earlier year diesel pump prior to full on ecu's. If your diesel truck is on fire i SUGGEST you put the fire out yourself without emergency services. Then call ins. co make sure you have full coverage, and report that shit a month later then go get you a newer truck.

[@ClippinAlong.singinAsong]

Perfectly explained, keep the videos coming. Your a natural born teacher

[@ChaosExplained]

Thank you!

[@jungleboyshd5996]

Thanks for this

[@ChaosExplained]

Yes sir

[@rayc.8555]

This has been a BIG help for me. I now know where to start. Thank you!

[@ChaosExplained]

I'm glad it helped you best of luck!

[@offroadman250]

Great video!

[@Billy45-70]

This is a great video. Honestly best one i found. Im hoping you can help me with an issue. Ive got a 6.9 idi. New injectors, 26k miles on ip, no air intrusion, correct fuel delivery. My problem is the combustion or injection noice will randomly increase while driving. The noise goes back to normal when i lug it, gets very loud when i let off, and back to normal when idling. Does not miss or smoke, has the same amount of power. But does not sound healthy. Hurts your ears, 83dB under the hood

[@ChaosExplained]

Hello! Thank you for your feedback, based on the information you have provided the best thing I can suggest is check your exhaust manifold AKA headers at the connecting points. You're going to be looking for suit (black carbon) build up. If you can find this this would be a sure indication of an exhaust leak. This is the best suggestion I can give. Another reminder these engines are becoming older and older, and they do make a lot of noise in general. Another suggestion I want to make is considered the oil you are putting in. Degrading in oil will always amplify mechanical noise. I suggest picking up some diesel heavy duty lucas at your local convenience auto store. Best of luck friend!

[@lukefixter9883]

Hey first time watching, liked the breakdown and details. I have an issue with a Detroit diesel 6.5 2000 model Chevy 3500. I’ve worn out 3 PDM’s in 6 months, I pulled the intake to change out the “Pigtail” wire from IP to PDM , screws into the back of the Injection Pump, Now the truck will not start, I’ve tested glow plugs…great, I’ve tested the fuel solenoid I seams to respond every time key is turn on. I have confirmed fuel all the way to the top of injection pump, I’ve disconnected lines at injectors no fuel….. trying to rule out entire check list before I bury a 1000.00 into a IP. Advice ?? Thanks , Luke

[@nunya2070]

Excellent man! I appreciate you putting together this content. Ive been having an issue with my truck and was hoping you could chime in. It fires right up but it misses and smokes like a freight train for the first 3 minutes that its on. It sometimes misses on one cylinder and other times its multiple. Generally it stops smoking when its warmed up but it does intermittently put of a small amount of a white / blue haze. My mechanic wants to just jump in and change IP right away but I'm broke and a little apprehensive. Do you have any thoughts?

[@mblake0420]

When I'm coming off a mountain at 55 the longer I'm off the throttle the longer it takes for me to get throttle back. Hit fuel nothing happens until rpms drop. What is likely the problem? 87 cucv chevy 6.2, runs great otherwise

[@mojo1965]

Bluish/white smoke, combined with a misfire, would that be caused by a worn injection pump?

[@ChaosExplained]

Blue is oil, white is unburnt fuel being atomized. Focus more on this: Misfire is due to a lack of combustion event happening in a particular cylinder. Why? Either lack of fuel from 1 injector(s) and or damaged mechanical parts affecting the flash point that is required for ignition.

[@CngBng]

I am having an extreme issue with ABSURDLY rough running, lots of smoke, greyish white, and a really touchy and surgery throttle. Any ideas? Just replaced the pump with a Pensacola reman. The problem did not exist beforehand

[@ChaosExplained]

My very first suggestion is bleed off the air that's probably trapped in the lines! You just undo the hex nut at all of the injector fittings while it's idling. If it's idling too rough, have it run for just a moment so I can build up some pressure then turn it off. then bleed off one hex nut at a time you'll see here into your Air seeping out with a little bit of fuel. Some injectors will be worse than others

[@crish02]

Just bought a 93 7.3idi with 83k miles runs good and sounds good but it smokes thin blue smoke at idle. It goes away when on the gas

[@ChaosExplained]

Could be a couple things here. Since you just bought it no telling what the previous people had in the fuel tank. Since you can run these engine off of raw engine oil in the diesel fuel that is right I just said that it will burn blue. Adding other things will also make it blue idling. Blue equals oil, since it's at an idlel I would either say it's what I said above OR the umbrella seals are leaking oil from the valvtrain, OR there is a head gasket issue but it is unlikely

[@crish02]

@@ChaosExplained thank you for replying back. Do you think it can possibly be due to dirty fuel. I just did the fuel heater delete yesterday and found a bunch of rust particles in the fuel filter.

[@ChaosExplained]

crish02 yea definitely change out your fuel filter. Before you go jumping into it I would suggest watching a crash course on it. Basically the gist of it is make sure you fill it full of diesel fuel before you put it back on otherwise you'll be cranking the hell out of your engine to get it Prime backup and all of the air out of the lines. I have seen it on my own truck where it was puffing some blue smoke lightly until I changed, the fuel filter.

[@scotthudson4462]

@21:55 4500CC per sec? miniute? what is the time frame for that flow rate at idle?

[@ChaosExplained]

Not sure about that bud, but at idle when you crack open the injector not fittings you should have plenty of fuel squirting out even at idle and crank