Injector Question

[jaysen71581]

Can having one messed up injector cause the car to not start, i have all the air out of my fuel lines and the car just cranks and cranks with no startup, i pulled the injectors this morning and ran them over to Antrim Diesel to get poptested and shim'ed if needed and they called me to tell me that the 3 i rebuilt myself were perfect and 1 was getting hung up.  Also if the injectors arent torque'ed properly to the head could that cause a loss of compression and prevent it from running?  Im running out of parts to buy for this car lol...

[Mark(The Miser)UK]

Can having one messed up injector cause the car to not start,Nope

i have all the air out of my fuel lines and the car just cranks and cranks with no startup, i pulled the injectors this morning and ran them over to Antrim Diesel to get poptested and shim'ed if needed and they called me to tell me that the 3 i rebuilt myself were perfect and 1 was getting hung up.  All I can think of  at the moment.... is Elvis

Also if the injectors arent torque'ed properly to the head could that cause a loss of compression and prevent it from running? Nope
I'm running out of parts to buy for this car lol...

Then stop it and polish up the parts you have 

What comes out of the exhaust when you crank?

[jaysen71581]

White smoke

[Mark(The Miser)UK]

White smoke

Good. So you have fuel going through the system, but the timing is way out.
Crank to cam is probably good, but with no attempt to burn the fuel it is being injected way after TDC.

Check with flywheel at TDC, that notch in pump pulley is at 12 o clock, or in line with middle of pump body [another  ridge]. If it is, then it could be that you have cam set to #4 TDC. Check under cover for cam lobes. Alternatively, loosen #1 injector fuel line and with solenoid energised,hand crank  engine to see if lobes for #1 ivalves are upright when fuel bleeds out of #1 line

[Wayland]

Are your glowplugs working?

[jaysen71581]

I think my pump may be out 180 degrees, i got my injectors back today and 3 were perfect 1 was getting hung up so the shop fixed that, also i probably forgot to torque the injectors to the head i could actually hand losen 2 of the 4 so i have a feeling i may have been losing compression...

[rabbitman]

also i probably forgot to torque the injectors to the head i could actually hand losen 2 of the 4 so i have a feeling i may have been losing compression...

Most likely.........

[Mark(The Miser)UK]

also i probably forgot to torque the injectors to the head i could actually hand losen 2 of the 4 so i have a feeling i may have been losing compression...

Most likely.........

Maybe you're a blacksmith However it would still start. But check out the 180 degree timing error though.

[jaysen71581]

Im messing with it before work, i set the pump 180 degrees and its just cranking over, im pretty sure it wasnt out of TDC because it did start before i had my pump rebuilt, come to think of it, it hasnt run since i had the pump resealed.... I know i dont have any air in my lines, the ip solenoid is working because when i bleed the air out.  Is it possible to have the motor at TDC the IP at TDC but the cam to be 180 degrees out ?

[jaysen71581]

Cam isnt out 180 degrees i visited vince's page on ip timing and looked at a few pics, its puffing out grayish smoke as it is now, at this point i am completely stumped, maybe a bad IP solenoid?  Not to sure...

[Mark(The Miser)UK]

Cam isnt out 180 degrees i visited vince's page on ip timing and looked at a few pics, its puffing out grayish smoke as it is now, at this point i am completely stumped, maybe a bad IP solenoid?  Not to sure...

Not sure what Vinces pictures show, because not easy to show that:

You can put the crank pulley [& flywheel] to TDC twice for every complete cycle of the 4 cylinders to do their thing.
 If the pump was set to one TDC and the cam the other, they would never meet.
Ie on the compression stroke for #1 the, cam lobes would be in the air, but the pump would be injecting into #4 cylinder.

Rotating engine to the next 'TDC' would make the pump squirt into #1 whilst the lobes were down and pushing the valves open, giving diesel spray into an all but atmospheric pressure, so wold not burn, but spray out of the exhaust.

If you are sure that you are not 180 degrees out, [as described above], then, you at the very least are injecting way after TDC

[Vincent Waldon]

They *show* both cam lobes on #1 up in the air *and* the flywheel at TDC... easy peasy.   

[jaysen71581]

Exactly what i did, made sure the lobes on #1 were in the air and the flywheel is at TDC.  The injection pump is def at TDC.  Im hoping its an electrical issue at this point like a glowplug relay.

[Mark(The Miser)UK]

They *show* both cam lobes on #1 up in the air *and* the flywheel at TDC... easy peasy.   

As in what I said, but what test is being carried out to check correlation between #1 cam TDC and #1 pump TDC?
Pimple on the pump sprocket being at Midday may not be enough if pump has been resealed, or am I wrong?

[jaysen71581]

Im going to test that on on weds morning currently i am at work lol...