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03-21-2013, 11:55 PM | #1 |
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Re: 1955 12 Valve NAPCO Clone
Any luck with the miss?
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03-22-2013, 10:05 PM | #2 |
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Re: 1955 12 Valve NAPCO Clone
No luck. I think I will have to let a professional do it. All the instrument cluster gauge lights I bought are wrong also.
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1955.2 Chevy 3100, 6bt, Getrag G360 5-speed, NP205, Dana 60/70 - http://67-72chevytrucks.com/vboard/s...d.php?t=536540 1992 Chevy K1500 Silverado ECSB 1965 "Crewcab" Chevelle 300 Deluxe - soon to be LBZ Duramax/4L85E powered |
03-23-2013, 11:43 AM | #3 |
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Re: 1955 12 Valve NAPCO Clone
For whats its worth a diesel guy once told me on the older mechanical engines . You could remove the exh manifold , run the eng and look at the exh ports to see what cylinder is kicking and making a fuss. then swich injectors from that cylinder and see if the miss moves to another cyl. If it moves , injector is ng. If not . Do compression and leak down on that cylinder. If you give it a shot of ether does the miss go away ? Is it even at idle for that matter? Why did that eng come out in the first place ?
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56 gmc 4X4 Cummins 5 spd 60F 70R 2005 Ram 3500 DRW cummins 4X4. 2006 Conolift 9/15. 2011 F 350 winter beater New 2018 ram 3500 drw 4x4. Makes my 2005 Look as if it's been running on 4 cyl since new ! My Build http://67-72chevytrucks.com/vboard/s...d.php?t=556908 |
03-23-2013, 11:56 AM | #4 |
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Re: 1955 12 Valve NAPCO Clone
My pump is the problem. With an injector cracked it won't even spray out it just spills out slow.
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1955.2 Chevy 3100, 6bt, Getrag G360 5-speed, NP205, Dana 60/70 - http://67-72chevytrucks.com/vboard/s...d.php?t=536540 1992 Chevy K1500 Silverado ECSB 1965 "Crewcab" Chevelle 300 Deluxe - soon to be LBZ Duramax/4L85E powered |
03-23-2013, 04:54 PM | #5 |
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Re: 1955 12 Valve NAPCO Clone
Yep that would do it.
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56 gmc 4X4 Cummins 5 spd 60F 70R 2005 Ram 3500 DRW cummins 4X4. 2006 Conolift 9/15. 2011 F 350 winter beater New 2018 ram 3500 drw 4x4. Makes my 2005 Look as if it's been running on 4 cyl since new ! My Build http://67-72chevytrucks.com/vboard/s...d.php?t=556908 |
04-01-2013, 06:42 PM | #6 |
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Re: 1955 12 Valve NAPCO Clone
So I have been thinking about my problem for the past couple of weeks in a state of depression about having to take my pump to a professional, hat in hand ,admitting defeat that I couldn't fix it with common tools. On Friday after work I was CLR'ing the rest of the cab and started thinking about the fuel level in the tank corresponding with the holes on my sending unit that I drilled to act as my return. I had test the fuel pressure earlier in the week and I was getting 3-5 psi after the filter which was in specs.
So with that thought in my head I grabbed (2) 5 gallon gas cans and jumped in my trusty 65 Chevelle and drove to the store. I filled them both up with diesel with my plan being to fill the fuel tank to the brim to elimante any air being sucked into the system. When I got home, I dumped both jugs in the truck and it didn't overflow it. So I took one jug and ran back up to the store and filled it up. It didn't take much of the second jug to overfill it. I then took and started the truck. It still had a miss but it was running much better and had a fuel haze. I found the dead miss to be on the #2 cylinder so I am gonna swap the injector with #3 to see if the miss follows the injector. I have my fingers crossed that it will. If it does I am going to get some 5 x .012 hole injectors on the way and replace them all. I also purchased a new pickup tube to eliminate any air getting into the return side. I think the main problem comes from the bottom of the tank supply outlet. I had checked the fuel flow by removing the hose and I had good flow. I think that when the lift pump pulled a vacuum on it that it was causing a whirlpool effect on the fuel causing me to get air and fuel into the pump. If the truck continues to act up I am going to purchase a bulkhead to add to the top and use the original pickup tube for my supply like my Canadian friend 6BT 56. I hope this was the problem all along but the fact that my timer piston in my injection pump was locked up still makes me happy that I addressed the pump. I will update as soon as I get some more news. Also as a side note I started on the wiring and hope to get it finished and installed as soon as I get my new headlight switch. I'm catching a second breath hopefully.
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1955.2 Chevy 3100, 6bt, Getrag G360 5-speed, NP205, Dana 60/70 - http://67-72chevytrucks.com/vboard/s...d.php?t=536540 1992 Chevy K1500 Silverado ECSB 1965 "Crewcab" Chevelle 300 Deluxe - soon to be LBZ Duramax/4L85E powered |
04-01-2013, 09:21 PM | #7 |
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Re: 1955 12 Valve NAPCO Clone
Hey bud . Glad to see you on track . I'm thinkin your right on track with the supply in the bottom of the tank. It should work but who knows. If you hook it to the new sender as the feed and put the return back into the top of the tank that should work . Thats what I did and So far so good. Not under load yet tho. The fitting I used was a billge plug for a boat . Brass plate with 3 hole in it . 1/2 inch pipe it think . They are cheep and avilable anywhere . There is a pic on my thread . My thought was if you were to keep the pick up in the bottom of the tank at low fuel during sloshing around you could have some problems. These 5.9's dont like air at all !!!
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04-03-2013, 06:15 PM | #8 |
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Re: 1955 12 Valve NAPCO Clone
Hey Luther . How you maken out ? Where did you get your trans parts? i need to replace the coupler between my getrag and my 205. Getting kinda wore. It's in for now , but will need to be done for sure. Went to dodge today and its NLA. Poopy.
Any suggestions?
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56 gmc 4X4 Cummins 5 spd 60F 70R 2005 Ram 3500 DRW cummins 4X4. 2006 Conolift 9/15. 2011 F 350 winter beater New 2018 ram 3500 drw 4x4. Makes my 2005 Look as if it's been running on 4 cyl since new ! My Build http://67-72chevytrucks.com/vboard/s...d.php?t=556908 |
04-03-2013, 10:09 PM | #9 | |
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Re: 1955 12 Valve NAPCO Clone
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1955.2 Chevy 3100, 6bt, Getrag G360 5-speed, NP205, Dana 60/70 - http://67-72chevytrucks.com/vboard/s...d.php?t=536540 1992 Chevy K1500 Silverado ECSB 1965 "Crewcab" Chevelle 300 Deluxe - soon to be LBZ Duramax/4L85E powered |
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04-03-2013, 10:11 PM | #10 |
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Re: 1955 12 Valve NAPCO Clone
I saw it now. I didn't remove mine from the transfer case.
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1955.2 Chevy 3100, 6bt, Getrag G360 5-speed, NP205, Dana 60/70 - http://67-72chevytrucks.com/vboard/s...d.php?t=536540 1992 Chevy K1500 Silverado ECSB 1965 "Crewcab" Chevelle 300 Deluxe - soon to be LBZ Duramax/4L85E powered |
04-04-2013, 08:57 PM | #11 |
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Re: 1955 12 Valve NAPCO Clone
I have an electrical question. Does anyone know of fuses that should be added to the original wiring harness for extra protection.
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1955.2 Chevy 3100, 6bt, Getrag G360 5-speed, NP205, Dana 60/70 - http://67-72chevytrucks.com/vboard/s...d.php?t=536540 1992 Chevy K1500 Silverado ECSB 1965 "Crewcab" Chevelle 300 Deluxe - soon to be LBZ Duramax/4L85E powered |
04-04-2013, 10:44 PM | #12 |
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Re: 1955 12 Valve NAPCO Clone
As long as every individual circuit is fused thats what counts. I like to add a big fuse inline powering the fuse box its self when rigging a boat from scratch. Actually I should say a breaker , you can reset them in the middle of the night in the middle of nowhere !
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56 gmc 4X4 Cummins 5 spd 60F 70R 2005 Ram 3500 DRW cummins 4X4. 2006 Conolift 9/15. 2011 F 350 winter beater New 2018 ram 3500 drw 4x4. Makes my 2005 Look as if it's been running on 4 cyl since new ! My Build http://67-72chevytrucks.com/vboard/s...d.php?t=556908 |
04-04-2013, 11:10 PM | #13 |
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Re: 1955 12 Valve NAPCO Clone
I have seen auto reset ones in the trucking industry, but its been a while. I added a aftermarket fuse box to my truck. LMC has a nice headlight harness that has relays, my truck melted that whole harness clear up to the headlight switch before I got it.
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04-08-2013, 03:18 PM | #14 | |
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Re: 1955 12 Valve NAPCO Clone
Quote:
Also on a side note. Does anyone know if my injectors should be loose when I remove the hold down nuts? I had to use a puller to remove them all last time and now all I have to do is pull them out with my hand. I found my miss. It was a bad injector. It took it apart because I believe the nozzle is clogged. I am going to try to clean it and reinstall it.
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1955.2 Chevy 3100, 6bt, Getrag G360 5-speed, NP205, Dana 60/70 - http://67-72chevytrucks.com/vboard/s...d.php?t=536540 1992 Chevy K1500 Silverado ECSB 1965 "Crewcab" Chevelle 300 Deluxe - soon to be LBZ Duramax/4L85E powered |
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04-08-2013, 05:00 PM | #15 |
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Re: 1955 12 Valve NAPCO Clone
Everything I have read says the main wire should be on a fusible link, not fuse or circuit breaker. If something goes bad enough to break the link, you need to find and fix it. Resetting the breaker or putting in a new fuse without fixing the problem might cause more damage to the wiring, start a fire, etc. Then you can individually fuse the component circuits.
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04-08-2013, 07:23 PM | #16 | |
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Re: 1955 12 Valve NAPCO Clone
Quote:
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1955.2 Chevy 3100, 6bt, Getrag G360 5-speed, NP205, Dana 60/70 - http://67-72chevytrucks.com/vboard/s...d.php?t=536540 1992 Chevy K1500 Silverado ECSB 1965 "Crewcab" Chevelle 300 Deluxe - soon to be LBZ Duramax/4L85E powered |
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04-08-2013, 06:13 PM | #17 |
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Re: 1955 12 Valve NAPCO Clone
Hi Luther . I gather from the pics and vids of the old ram this truck will see some off road use. I agree abt fixing the problem , but if you in nowhere you may be able to easily fix the problem. You cant fix a fuseable link. But you sure can reset a breaker to get home or at least some lights on. This is one of the reasions boats are mostly all breakers. Just incase you abt go go over niagra falls you can hopefully get movin to saftey then assess the short.
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04-08-2013, 07:13 PM | #18 |
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Re: 1955 12 Valve NAPCO Clone
I might have said this the wrong way but I don't have an electrical problem with my exisiting harness. I was just wondering if I should add an extra fuse to the main power feed to the headlight switch as extra protection. The headlight switch has a fuse built in but it is the only fuse I see in the entire wiring harness.
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1955.2 Chevy 3100, 6bt, Getrag G360 5-speed, NP205, Dana 60/70 - http://67-72chevytrucks.com/vboard/s...d.php?t=536540 1992 Chevy K1500 Silverado ECSB 1965 "Crewcab" Chevelle 300 Deluxe - soon to be LBZ Duramax/4L85E powered |
04-08-2013, 07:19 PM | #19 | |
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Re: 1955 12 Valve NAPCO Clone
Quote:
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04-09-2013, 11:02 AM | #20 |
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Re: 1955 12 Valve NAPCO Clone
http://s943.photobucket.com/user/Lut...d3616.mp4.html
Hopefully that link will work for you but it is a video of the truck running. It now has no misses and runs like a sowing machine. Glad to have finally solved this problem. It is always a good feeling to fix something like this. And now I know how my pump works too :p. The miss was caused by a clogged injector nozzle. I bought some brake cleaner that the red plastic straw would fit into the supply for the nozzle and it cleaned it right up. Saved $60 dollars doing that myself. It is not pop tested but I am working on building a DIY Pop Tester out of an old bottle jack. It is amazing how clean this new diesel runs. My old engine would smoke and haze like crazy. I couldn't even stay in the garage with it running.
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1955.2 Chevy 3100, 6bt, Getrag G360 5-speed, NP205, Dana 60/70 - http://67-72chevytrucks.com/vboard/s...d.php?t=536540 1992 Chevy K1500 Silverado ECSB 1965 "Crewcab" Chevelle 300 Deluxe - soon to be LBZ Duramax/4L85E powered |
04-09-2013, 12:12 PM | #21 |
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Re: 1955 12 Valve NAPCO Clone
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04-09-2013, 12:42 PM | #22 | |
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Re: 1955 12 Valve NAPCO Clone
Quote:
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04-09-2013, 04:56 PM | #23 |
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Re: 1955 12 Valve NAPCO Clone
I meant sewing machine But since this Cummins B series engine also came in combines and other farm equipment, sowing machine will also work. :p
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04-09-2013, 10:46 PM | #24 |
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Re: 1955 12 Valve NAPCO Clone
Hi luther. Thats excellent . Sure sounds nice. I got mone running this week too. I'm going to up date my thread with a bunch of pics soon. So busy with the truck I havent been inside before 11 in a week or so . Its awsome when they get to this stage. It actually feels like your making forward progress.
Keep up the awsome work.
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04-10-2013, 12:34 AM | #25 | |
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Re: 1955 12 Valve NAPCO Clone
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I hope to update my thread tomorrow because I drove my truck up and down the street this afternoon. Posted via Mobile Device
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1955.2 Chevy 3100, 6bt, Getrag G360 5-speed, NP205, Dana 60/70 - http://67-72chevytrucks.com/vboard/s...d.php?t=536540 1992 Chevy K1500 Silverado ECSB 1965 "Crewcab" Chevelle 300 Deluxe - soon to be LBZ Duramax/4L85E powered |
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