Dumb question about injectors....

[Bug Out]

I'm still trying to figure how much of my smoke is fuel injectors or? I would like to change out the injectors just to see. I know absolutely nothing about injectors. I have seen a couple youtubes -"how to r/r" etc. Looks easy



I have found stock ones for less then 50 ea.



What is the diffrence between stock injectors and say 200hp injectors?Can you tell the size from outside or? will a 200hp inject put more fuel in all the time or just under throttle?



Does anybody on the board have used good stock injectors they want to get rid of?



I discovered another problem from asking questions. The crankcase oil "somehow has grown" or diesel is leaking into the crankcase.



One fella at a shop said it will smoke heavy if the injectors are letting fuel in,has to burn that,plus fueled up oil in cylinder. He said check the dip stick. Sure enough.



So now I check the injectors and fuel return line, but they seem tight. Whats the easy way to check where air might be getting in the line and or other common problems?



I put in some Power service diesel kleen to "clean" the system, but the exhuast smell is so strong it almost burns your eyes. I put the right mixture in.



Anyhow, any help would be appreciated. Thanks in advance.

 

[roachcoach]

One, 200hp injectors are biggggg, and if you are getting enough fuel to them, they will smoke... like a freight train. Also they are pretty easy to change. You can't tell the difference from the outside, you will have to take them out to tell, they will have a different number of holes in the tip and the holes will either be bigger or smaller than factory. The better injector to have in my opinion is an injector with a lot of smaller holes compared to like four holes that are really big. With the smaller holes, the fuel will be atomized better (It will be 'finer' or be more of a mist, compared to the bigger ones).

 

[Bug Out]

I dont know whats in there. I used 200hp as a example. I've come across ijectors with HP numbers attached which spurred the question.

 

[roachcoach]

I was just stating if you did have them they would smoke horribly, I don't even know of they make 200hp injectors for a first gen, that's a lot.

 

[Greenleaf]

The best mothod if you have old injectors, is to buy new. The next best is to pull them and have them tested/calibrated if they are not too old/worn yadda yadda and you want to retain them for some time. You can drive siad truck when you send them off for service, so buying new is the best... .....



If you buy a truck that has performance injectors, ask the PO what they are. Or, send them off for for a flow test if you really need to know.



Sounds like you need to install a set that you need and sell the others.

 

[JLEONARD]

I was just stating if you did have them they would smoke horribly, I don't even know of they make 200hp injectors for a first gen, that's a lot.

I think they do.

The ones I put in my truck were "plus 50s" which would be the stock 160 plus 50. They would smoke if I put the wood to her, but at idle and normal driving they were clean. I even passed Ct emissions testing several times with them.



PODs are rated higher. I'm not sure anyone ever put a rating on them. You can look at signatures and dyno numbers see that 200 is nothing.



And then there are custom and combos and not sure the upper limit has been reached yet.

 

[pwerwagn]

Does anybody on the board have used good stock injectors they want to get rid of?

I have a set of either 180hp or 190hp bosch injectors (not 180hp over stock, 180's. Meaning yours are 160's, these are 180's or 190's). They have very few miles on them if you are interested.



--Jeff

 

[Bug Out]

pwerwagn, I sent you a PM.





Ed

 

[paccool]

The 180's are good injectors for a mild upgrade. Burn clean.



They also have a nickname of "power wagon" injectors. I just reinstalled mine and took out the big set I have to clean up some smoke issues. Still have enough power to light the twins off.

 

[Bug Out]

I was trying to get a hold of pwerwgn to make some arrangements. Fingers crossed it cuts the smoke issue down quite a bit.



Would i need gauges with 180's? ( I know I should have them anyhow, but $ is VERY tight right now)? .

 

[JLEONARD]

Would i need gauges with 180's? ( I know I should have them anyhow, but $ is VERY tight right now)? .

No. You will be fine until you start turning screws

 

[Bug Out]

Had the injectors checked out. The guy said he tested them and they were ok. Not new, but proper BAR for being used. Said they were not the fuel in the oil issue.



He suggested changing the lift pump as he has seen them leak fuel in the crack case.



So, My last chance is the return fuel line looked like it my have had a crack allowing the fuel out of the return line. When i took the injectors out, each one seemed to have air bubbles coming out.



I also felt around the rubber part of the fuel lines at the tank. I'll have to mirror/flashlight them to see what condition they are in. They felt hard and dried up.



Hopefully tomorrow I'll have it all back in one piece to fire up and see whats gonna happen. . LOL



Would air in the lines cause lots of white smoke at start up? I'm out of good luck possibilites at this point.

 

[DVolk]

They all smoke when there cold if it dont clear up in a few minutes there there is a issue you might have a timming issue

 

[cerberusiam]

Like Dvolk said, you will always get some white smole on a cold start even with good injectors. The cylinder temps have to get warme dup before the combustion event is hot enough to burn all the fuel.



They will also smoke worse on cold start if the KSB is not functional.



Some white smoke is to be expected but rolling clouds is not and yes it will smell real fule rich because it is uncombusted fuel.

 

[DVolk]

Unless its firing on the exhaust stroke then it will smoke like a steam engine ive also seen bad turbos smoke like hell as well