| diesel truck not starting - Click HERE for Original Thread |
| SilverNeonRacer |
I just put my truck back together, new head gasket. I didn't get any cross contamination bewteen oil and coolant when it went.
The truck died back in December, prolly bout the 12th or so. Anyhow a week or so ago I took the head off, and look and looked cause I was thinking the head cracked, the mitsu 4d55t it renowned for that.. But the head looks fine, ok look at the gasket.... it's in good shape.. only one spot I can see that might have been where if failed.
So I just put the new head gasket in today.. put it back together, try to fire it up... just happly spins like it has no compression.... ok... check my timing.... it's off, quite a bit off, but luckily.. with the engine design, no chance of valve hitting piston... so I set all the timing, well the crank and the diesel injector pump are dead on, the cam is about 2 degrees retarded...
Use the manual diesel pump just incase I got air in the lines.... ok... have pressure.. Cranks like it did before it blew.. just won't actually start.
Any ideas?
How long does diesel last before it's junk?
I have about 1/2 tank left in the truck.. is there any tricks you can use ona diesel like you can on a gas, like eather in the intake to try and get it to fire?
Next warm day I have time, I'm gonna check for fuel pressure, might try connecting a jerry of diesel to my fuel puimp and see if that works.
Thanks |
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| Soulfly |
eather.. but Be careful for Runaway.. If It starts revving up and doesn't stop.. .. Just drop Everything and Run your ass outta there... :lol:
But yeah.. Try a Sprits of eather.. and hopfully she'll start.. that or.. I dunno? Check the injectors?? Maybe it's not actually getting Diesel? |
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| SilverNeonRacer |
| Yeah, thats what I was gonna check next time.. got too dark to keep working on it tonight. I figured, I'd unbolt one of the injector feeds and see if it sprays... if so.. then pull the injector out and see what happens. |
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| LeadSled |
Try running some diesel conditioner in your tank... if you have water in the diesel (which is likely if its been sitting in an old truck for a while) it will help until you get some good fuel, and some like the Gunk brand we use in our heavy diesels boost cetane by 3 - 5 points. Also, some good injector cleaner will clean the pump, lines and injectors if you think they need it.
And get someone to hit it with starting fluid (take out the air filter) while you crank it.
What killed it in the first place? |
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| SilverNeonRacer |
quote:
Originally posted by LeadSled
Try running some diesel conditioner in your tank... if you have water in the diesel (which is likely if its been sitting in an old truck for a while) it will help until you get some good fuel, and some like the Gunk brand we use in our heavy diesels boost cetane by 3 - 5 points. Also, some good injector cleaner will clean the pump, lines and injectors if you think they need it.
And get someone to hit it with starting fluid (take out the air filter) while you crank it.
What killed it in the first place?
I was driving down the highway in -40 and well... I lost power.. like full throttle and slowing down, so I turned the radio off and I heard TICK TICK TICK.... so I looked at my oil pressure(down low) darn near nothing so i pushed the clutch and it just died... I pulled over and steam was shooting out the front of the engine and the driver side fender was covered in oil. My oil system pressured and shot the dip stick out and most the oil too.
Coolant leaked out on to the ground.. now that I think of it.. that part of the head gasket was gone...
We used a U-haul car dolly to get it home.. couldn't push it up so i put it in 4lo and used the starter to drive it up. Still cranks fine.
I have some anti-gel/cleaner centane booster here.. but the truck didn't like that last winter... I'll have to pop down to the automotive store tomorrow andsee what they have for conditioner...
Currently I don't have half the timing belt cover on, an no intake, it's just straight turbo.
I know Gas can go stale after a while, wasn't sure if diesel does the same. |
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| Soulfly |
yeah.. just check the injectors first.. then run to the store later... :thumbup:
You'll figure it out.. I have faith in ya! :lol: |
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| SilverNeonRacer |
quote:
Originally posted by Soulfly
yeah.. just check the injectors first.. then run to the store later... :thumbup:
You'll figure it out.. I have faith in ya! :lol:
Gee thanks... nice emoticon.
:D
Dunno when I'll get to play with it again.. so I'll prolly toss in a conditioner, definatly wouldn't hurt... |
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| stuff |
| Just a guess but are the glow plugs functioning properly? |
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| Soulfly |
Fuck glow plugs.. just toss a few bic lighters into the intake manifold... She'll start..
lol :lol:
anyway.. Yeah.. He might have checked that.. But I would recommend re-checking everything again.. like Pull a glow plug out and reconnect it.. and then turn over the ignition.. and see if the bitch glow's.. :P:bowdown: |
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| SilverNeonRacer |
Have super glows... $200 each...
I had the block heater plugged in...
But I'll check them too.. They lights in the cab say they're working. |
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| Adam |
if all timing is on for sure and you have fuel coming from the pump to the injector then its probably a lot of air in the system, is there any way you can prime the system or bleed it on that pump? Does it make smoke when you crank it?
Just be careful with fuel lines being off and cranking the motor as fuel pressures could be high and cut you hand off...not sure about what you have but some mercedes deisels have pressure as high as 20,000 psi. |
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| SilverNeonRacer |
Ok... I disconnected 1 injector feed line, I have fuel to the injectors.
I tried eather.. no go.
I have no smoke coming out the tail pipe that I can tell.... I do have fumes or something coming out of my valve cover PCV thing, and the dip stick when I pull it out.
The crank and injector timing are dead on with each other, my cam timing is still 2degrees retarded.
Sooo next step I guess is to re-time it and to do a compression test. I have a compresion tester for gas engines... will that work on a diesel if I say pull the injectors and if the thread type matches feed it in there?
WEeeeee.. I bought a cheap set of booster cables and they barely crank the truck, the neightbour has some 2ga boosters and she cranks pretty good. 8ga boosters don't work that great. The funny part is the stock batt wires are 8ga. |
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| Adam |
| you would need a tester for deisel engines, cylinder pressures are much higher in diesels. |
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| REDX2NV |
quote:
Originally posted by Adam
if all timing is on for sure and you have fuel coming from the pump to the injector then its probably a lot of air in the system, is there any way you can prime the system or bleed it on that pump? Does it make smoke when you crank it?
Just be careful with fuel lines being off and cranking the motor as fuel pressures could be high and cut you hand off...not sure about what you have but some mercedes deisels have pressure as high as 20,000 psi.
They are high psi after the injector.
The wouldnt cut your hand off, but would instantly penetrate your skin and die from poisining.
You may as well do a valve adjustment while your at it.
Loosen the lines going to the injectors one by one(yes all of them) and make abolsutely sure that the lines are free of air, lots of fuel should be coming out when they are cracked. Then tighten the lines up after a solid stream of fuel is pissing out. Diesel engines will always suck air before fuel. |
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| chris f |
sounds like your not geting fuel in to the cylinder. if you were and you had nice puffy cloud like smoke comming out of of your exhaust it would be a timing problem. sounds like the injectors are not opening. start ao the frist fuel fitting from the tank, bleed the system in as meany spots as you can and make shure you have everything tight, lines and filters.
with the system you have on that truck you wil have high pressure in the lines after the pump not after the injectors. that kind of systed is found on unit injectors. |
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| SilverNeonRacer |
When I popped one injector feed line off, It was dribbling fuel.. keep in mind the engine was only cranking, not running.
I have an injector pump which decides what cylinder gets fuel when. Not electric injectors.
Before the Injector pump is the fuel filter/water seporator. If I where to run out of fuel, I would have to manually pump fuel via the filter as well, it has a little pump built in, next to the fuel heater.
I guess next time I'll take all the injector feed lines off and try cranking and see what happens. |
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