New diag tool time
10-18-2020, (Subject: New diag tool time ) 
Post: #1
New diag tool time
Started getting a rough idle on the 2350 so ran cylinder cut out and nothing noticeable so went on to fuel leak down test and low and behold 5k psi in 1 minute. So now gotta find if it's an injector or regulator which requires tools I don't have yet. When I first got truck bout 50k ago would only loose maybe 500psi in 10 min.


User's Signature: 2010 Lonestar - CM871 - 13sp - 3.70s, 2016 T680 - cm2350 - 13sp - 3.36s - skateboarder
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10-18-2020, (Subject: New diag tool time ) 
Post: #2
RE: New diag tool time
Probably gonna need an injector pop tester right? I've been wanting to get one just not sure which one to buy, they all look like cheap chinesium.


User's Signature: Warranty??? Yeah right, I am the warranty!!!
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10-18-2020, (Subject: New diag tool time ) 
Post: #3
RE: New diag tool time
nah the deadhead tubes for the injectors and whatever size bolt i need to replace the banjo bolt with to deadhead things one at a time. granted if i find more than 2 injectors goofed ill probably just replace all 6. i almost need to spend more money to beat uncle sam this year i dont have 50k in repairs this year and my profit margins looking a little fat. according to my taxes last year i lost 11 grand between depreciation of truck trailer and all my deductions. according to my bank account though it was a nice year and this year is looking way to good and then next year i plan on building a 42x100 shop and 42x25 shouse so then ill have that for deductions next year as long as the election goes the right way.

this t680 has been good to me went from the lonestar throwing IFTAs of 4.6-4.8MPG to this last 1/4 that was all T680 and threw a 6.66.

so went from being profitable at 4.6 to basically 6.6 making the same money its been great.


User's Signature: 2010 Lonestar - CM871 - 13sp - 3.70s, 2016 T680 - cm2350 - 13sp - 3.36s - skateboarder
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 Thanks given by: smorgan87 , JimT
10-18-2020, (Subject: New diag tool time ) 
Post: #4
RE: New diag tool time
(10-18-2020 )Lonestar10 Wrote:  nah the deadhead tubes for the injectors and whatever size bolt i need to replace the banjo bolt with to deadhead things one at a time.

I wish someone would make a video of this so I could understand it better.


User's Signature: Warranty??? Yeah right, I am the warranty!!!
replyreply
10-18-2020, (Subject: New diag tool time ) 
Post: #5
RE: New diag tool time
fuel pump goes to the rail. rail has lines going to each injector replace 1 line at a time going to injectors with a deadhead line and redo leak test no leak means thats the injector thats leaking if still leaking move on to next injector if leak never stops then start plugging off all injectors at once execpt 1 untill it does then start working towards which ones are and arent leaking by pressuring 1 injector at a time.


User's Signature: 2010 Lonestar - CM871 - 13sp - 3.70s, 2016 T680 - cm2350 - 13sp - 3.36s - skateboarder
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 Thanks given by: hookliftpete , tree98 , JimT
10-19-2020, (Subject: New diag tool time ) 
Post: #6
RE: New diag tool time
https://www.ebay.com/itm/Cummins-TESTER-...Swsq1cbHrg this is the tool for blocking the injector lines...and you need atleast 5 on a real bad injector day.


User's Signature: 2010 Lonestar - CM871 - 13sp - 3.70s, 2016 T680 - cm2350 - 13sp - 3.36s - skateboarder
replyreply
 Thanks given by: tree98 , JimT
10-19-2020, (Subject: New diag tool time ) 
Post: #7
RE: New diag tool time
Keep searching for a better price than that Arkansas Valley seller. They have access to a lot of stuff thats hard to find but they make you pay a hefty price for everything. They have no bargains.
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 Thanks given by: JimT
10-19-2020, (Subject: New diag tool time ) 
Post: #8
RE: New diag tool time
Lonestar. I was in the same boat. Tranny went out and fixed that for me. Im thinkin maybe ill hold off on that new lincoln ranger 330 welder for next year.
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10-19-2020, (Subject: New diag tool time ) 
Post: #9
RE: New diag tool time
(10-18-2020 )Lonestar10 Wrote:  nah the deadhead tubes for the injectors and whatever size bolt i need to replace the banjo bolt with to deadhead things one at a time. granted if i find more than 2 injectors goofed ill probably just replace all 6. i almost need to spend more money to beat uncle sam this year i dont have 50k in repairs this year and my profit margins looking a little fat. according to my taxes last year i lost 11 grand between depreciation of truck trailer and all my deductions. according to my bank account though it was a nice year and this year is looking way to good and then next year i plan on building a 42x100 shop and 42x25 shouse so then ill have that for deductions next year as long as the election goes the right way.

this t680 has been good to me went from the lonestar throwing IFTAs of 4.6-4.8MPG to this last 1/4 that was all T680 and threw a 6.66.

so went from being profitable at 4.6 to basically 6.6 making the same money its been great.
I feel your pain my lonestar was pulling 4.7-4.8 on a compliant 2350. it was recently low 6's for a while after a proper tune until another injector started leaking again but it's still in the high 5's. I would do all six at once but Cummins hit me for $1800 for one cm2350 injector last time
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