I'm just not sure it can pull enough to prime itself or the injector lines

 

there is a new fuel filter, and it was getting plenty of throtle.
i geuss i will try a new lift pump tomorrow.

anyone have any thing i might have missed or might want to check?
thanks for all the info so far fellas.

Bob

 

How about your full fuel screw setting? I've had my pump top off 4 or 5 times and always eyeballed it. This last time I did it, it wouldn't fire, even with throttle. I was 4 turns out from even an idle of 500rpms.

 

You beat me to it Greg. Start turning the fuel screw in a turn and try starting again. Also make sure the start/stop solenoid is plugged in. Crank it with the throttle held on the floor. It's most likely the gov spring job and not the HG job that is holding you back.

BTW, the Cummins B Series Troubleshooting and Repair manual has the back of the VE labeled with cylinder numbers. A very nice manual to own. I'll try to get the part number for those interested.

 

you know, that could be it. i did mark the screw on its postion. buy i did pull it all the way out to get the callar off so i could turn it up some. i will try it this afternoon. right know i am bushed, a night of turning and fixin aircraft and managing 10 guys and gals has took it out of me. so its sack time.


thanks for all the ideas guys, i love this place.

BOB

 

Being as you changed the fuel filter it might be worth your time to double check the gasket and mating surface, and bleed the filter housing banjo first to check for fuel and air.

 

well i turned my full fuel screw in, and nothing. still suckin air. and wont turn over. so next was a new lift pump. witch when i checked and compared the two the new one flowed more fuel. so next will be to check the filer housing. thanks jimmi


Bob

 

ok fellas, what else is there? i have checked every line, and checked agian, twice. replaced all my washerson the banjo bolts. checked the valve setting, off tdc for #1. checked the full fuels screw. rplaced the filter heater gasket. put a new lift pump in. and after all this i am am stillgetting a large amount of air. this truck will not fire.

what else could this be, o ya, the idexing is right. i have done every thing suggested on this post, and then sum. but i have nothing. i need some help.


Bob

 

See if it'll bark on ether. That will eliminate compression/valve setting issues from the issue. If it barks on ether, it has to be one of 3 things: fuel leak in the low pressure side (should be visible when cranking), fuel screw not in far enough, or the throttle lever isn't indexed properly.

 

where i am right now.

it has to be a low pressure line. witch i cant find. reason for this is that i am getting tons of foam when bleeding the lines. i have gotten it to "bark" when i tighten the injectors down. it just wont stay runnin because of to much air.
i talked to a cummins mechanic on friday. he said that every thing that has been suggested here, and the all i have done is every thing he would have checked. he told me to pull one line off the injector until i get a sole flow. if i dont get a solid flow i still have a low press line suckin air.
this really frustrate's me. i strouble shoot multie million $$ aircraft, from hydralics, landing gear, fight controls and electical problems to engine problems. and i have never had any thing kick my butt like this before.

so this is what i am going to do. i am going to start from the tank and move forward. i am going to rtv every fuel line conection. one at a time and then turn over. if i still have air, i amgoing to move on to the next one.
i have checked all the lines and cleaned the threads, buut it could be a bad swage, or the line could be bent slightly at the fitting. this will take place after easter dinner.

any thoughts on this?

BOB

 

Is it possible that you set the valve's with the TDC being on the exhaust stroke instead of the compression stroke?...just thinking out loud here???

 

no, there right on. i checked and checked agian. i had to adjust them a little after the first time i checked them. but thanks for the thought.

BOB

 

Bob, not that the valves are not adjusted...I was thinking that the motor rotation could be 180 deg off??? Is that possible?

 

When I want to eliminate the whole fuel system prior to the IP as a source of air or other problems I get a 2 or 5 gallon can of fuel, set it on the roof and run a clear line (with an inline filter in it) straight to the IP. I've never done it on a Cummins but just about every other diesel we have.

One thing to be careful of (that I've done) is leaving the can on the roof and letting all of the fuel run through the IP, through the return line and over filling the regular fuel tank.

JP.

 

crewcabcummins,
no my valves are not 180 deg. off. i checked. there right on the money.

ok, off to get this thing running.

BOB