no start issue can anyone help

estructo419 · Jul 21, 2019

i have a 93 7.3 idi non turbo and it will crank and not srart i have new filter glow plugs relay and hoses i bled the the air out of the lines and got her to start one time but now nothing ihave no fuel coming out of the schrader valve when i press the needle i guess my question is should i have fuel there when pressed and what should i do if i am supposed to have fuel there

homelessduck · Jul 21, 2019

Yes , there should be fuel. How full is the tank? The pick ups fall off the senders which makes it suck air.

estructo419 · Jul 21, 2019

half a tank is my lift pump bad it i hold the needle in and crank it it spurts out intermittanly but i was thinking it should have pressure all the time even if it just a little

homelessduck · Jul 21, 2019

Usually they suck air at about 1/4 tank. They don't move a lot of fuel, but your lift pump could be weak.The diaphram in the pump can rupture and allow diesel to enter the crank case. Check your oil to be sure that hasn't happened. New pumps are like $20 and super easy to replace.

Slicknik · Jul 22, 2019

@estructo419

Did you fill your filter with fuel before putting it on? If while cranking you get intermittent spurts of fuel then you still have air in the system , possibly a failing fuel/lift pump

charge both batteries first to 100%

then your going to have to crank in intervals of 20 seconds or so to prime your system,

(If your fuel system isn’t sealed this hard start issue will happen again )

You have air intrusion in your fuel line system , more than one place , you still have the fuel heater element on top of the filter mount ? That’s where one of mine was , fuel return o rings and lines on the injectors were another , then the pick up tube

estructo419 · Jul 22, 2019

ok i dont smell any deisel in the oil i think thats good thanks for the advice

estructo419 · Jul 22, 2019

yes it was full and it the fuel heater element is that the black plug with the wire run to it

Oledirtypearl86 · Jul 22, 2019

Will it pop With a shot of ether

estructo419 · Jul 22, 2019

it started trying to vapor lock and it has new glow plugs so i didnt want to burn them up so i tried one shot and quit but no it didnt

Oledirtypearl86 · Jul 22, 2019

Too much ether bud a little goes a long ways

Slicknik · Jul 22, 2019

estructo419 said:
yes it was full and it the fuel heater element is that the black plug with the wire run to it

Yes , the o-ring on the inside tends to dry up and leak fuel, do you see a drip pattern on your valve covers at all?

Another way to tell is when someone is cranking push the Schrader valve in at the same time and see what comes out , if you feel air then ;
A. You know your lift pump works
B. No fuel

Don’t forget to charge batteries and also clean the post making sure they have good contact

estructo419 · Jul 22, 2019

if i push the schader valve in and cank it spurts fuel intermitanly not a constant stream

estructo419 · Jul 22, 2019

im going to pick up a new lift pump friday when i get paid just cause there cheap and easy to change it would be better to do it now rather than wait anyhow

Slicknik · Jul 23, 2019

Ok, you may have more air intrusions, make sure you have more than half a tank, you probably should change out the shower head in the tank

Post up after you do replace the lift pump

estructo419 · Jul 23, 2019

will do i appreciate all the help guys

no start issue can anyone help

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