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6.2L Diesel Engine Discuss the 6.2 GM diesel engine & associated components.

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Old 09-05-2013, 10:15 PM   #31 (permalink)
smackzed
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Didn't you say there was a bit of fuel at #1 injector. If so then you just need a bit more cranking. It really does take quite a bit

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Old 09-05-2013, 10:18 PM   #32 (permalink)
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Yea I took the line completely off and put my finger on the end and it couldn't have been more than a drop of fuel. But I did the same with injector two and it was completely dry

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Old 09-05-2013, 10:31 PM   #33 (permalink)
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Dang it I think the injection pump has a leak. When I put everything back on I used an air chuck to blow all the dirt and fuel out from underneath it and after I cranked it again, there was a couple fuel drops under it
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Old 09-05-2013, 10:32 PM   #34 (permalink)
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you usually won't see more than a weep of fuel at the injectors, the amount pumped is very small. You will have better luck removing the glows and cranking it over. It will make it turn over a lot faster and when you see fuel mist out of the glow holes, your purged.

If that doesn't do it, the pump is probably shot by your other issue of crud in the pump.
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well to make your pump retarded, you could let it hang out with me for a day
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Yeah Diaric, I gotta say, I'm afraid I'm going to have to give you an official warning on that.
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Old 09-05-2013, 10:34 PM   #35 (permalink)
smackzed
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could be a tired pump, but it should at least move fuel. I'm just thinking....the click means the solenoid on the IP is working, it doesn't mean the fuel valve is necessarily working. I know the metering valve can get stuck, especially if it's been sitting a wile. Maybe take the pump off and take out the diesel and put some straight Power Service or Howes in there and move the parts about a bit by hand. I'm not real familiar with the inside of the pump but maybe someone who is will chime in and say which parts are which.

One drop of fuel is a start I'd say. did you verify the fuel pump is pushing fuel? It should move more than a pint of fuel every 30 secs maybe even close to a quart
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Old 03-15-2014, 05:42 PM   #36 (permalink)
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Hey guys! Back at it again lol its been months since I've tried to start this truck because its been so hectic with work and school. So since its spring break I thought I'd try again and earlier today I got everything buttoned up. I replaced the flywheel (that's why I stopped working on it last time) put an electric lift pump from a 6.5, new ac Delco glow plugs (all except for one that was too swollen to take out, two new fuel filters, gear reduction starter and bracket and gave her a crank. It started for about a second but it didn't want to stay running. So I kept trying and trying and it still will only run for about half a second. Should I do a compression test? Because I was thinking maybe a valve was stuck open or maybe the timing is off? Any advice?
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Old 03-15-2014, 05:51 PM   #37 (permalink)
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That's how mine starts when I'm trying to get it going after ripping it apart. Just sounds like it still has some air in the lines or the timing maybe a hair to far advanced or retarded.

I would just keep trying other things unless you have a compression tester laying around.
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well to make your pump retarded, you could let it hang out with me for a day
Quote:
Originally Posted by Hawkstrong View Post
Diaric wins thread derailment......
Quote:
Originally Posted by High Sierra 2500 View Post
Yeah Diaric, I gotta say, I'm afraid I'm going to have to give you an official warning on that.
6.2 FAQ's AND ANSWERS Click Here
My Restoration Thread Click Here
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Old 03-15-2014, 06:37 PM   #38 (permalink)
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Well shoot! I bled the injector lines and it started and ran full throttle until the governor kicked in and stopped it from blowing up in my face!
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Old 03-15-2014, 07:20 PM   #39 (permalink)
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Lol wait do they even have governors? It probably just ran out of fuel. Well I don't even know where to go from here... Maybe a stuck valve? Or a bad IP? Or its advanced too much, although I've never done anything but take the top off and put it back on. Clueless
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Old 03-15-2014, 08:46 PM   #40 (permalink)
smackzed
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When you took the top off you replaced it wrong and have jammed the linkage open. I've never replaced it so I don't know the proper procedure but if you remove the top you need check that the solenoid is functioning by turning the key to run and removing the pink wire and touching it to the terminal while listening for a click. It will be distinct but quiet so try to make sure there are no other sounds around

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AM/FM Radio -rebar except for engine trans and misc suspension parts

'90 GMC R3500 srw 3+3 310 000kms
CD player that eats CDs
No matter what Dieselplace may say, I am not a diesel technician, nor expert or specialist. Just a cheap guy with old truck that needs to run
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