Just will not start.....
Logistics Pro
Joined: Jun 2017
Posts: 3,950
Likes: 509
From: Edmond, OK
Lonewolf you da man! 
Modding a GP or the HF kit adapter is the way to go. The small fitting in the HF kit worked but it was a PITA. I probably got inaccurate readings which is actually sort of a relief. These were taken on 5/19/2018 with the engine cold and the other GPs still installed:
1) 350 psi 2) 360 psi
3) 340 psi 4) 370 psi
5) 340 psi 6) 380 psi
7) 350 psi 8) 340 psi
It's probably time for me to dust off the HF compression tester, mod the adapter and do the compression test right.
Modding a GP or the HF kit adapter is the way to go. The small fitting in the HF kit worked but it was a PITA. I probably got inaccurate readings which is actually sort of a relief. These were taken on 5/19/2018 with the engine cold and the other GPs still installed:
1) 350 psi 2) 360 psi
3) 340 psi 4) 370 psi
5) 340 psi 6) 380 psi
7) 350 psi 8) 340 psi
It's probably time for me to dust off the HF compression tester, mod the adapter and do the compression test right.
More Turbo
Joined: Oct 2014
Posts: 692
Likes: 81
From: Alberta Eh
Lonewolf that is a great idea to modify a glow plug into an adapter, I knew I was saving these burnt glow plugs for some reason lol
Also not that it matters but just some random info about the fuel shutoff solenoid, my International manual states that a minimum of 9 volts is needed to open it. There’s a little leeway, it’s not like if you have 11.9 volts your thumbing it home, but there really isn’t a reason to not have 12 there I suppose.
Also not that it matters but just some random info about the fuel shutoff solenoid, my International manual states that a minimum of 9 volts is needed to open it. There’s a little leeway, it’s not like if you have 11.9 volts your thumbing it home, but there really isn’t a reason to not have 12 there I suppose.
Scope Wizard
Joined: May 2019
Posts: 6,530
Likes: 25
ya old GP's are handy to make a Luminosity probe adapter too 
when using one for compression my Hose has a Check valve in it, and so does my Gauge so I don't need the tire valve in the adapter, anyway keep that in mind.
and Yes I realize that the voltage can drop below 9 volts and still keep the solenoid energized... Pull in is where the max current is drawn and it don't take much to hold it.
this is why I figure it should run long time off a set of good batteries. My guess is 6 volts would hold it once it has been initially Energized
it was in the other post I was a little more bothered by the Low voltage as that Poster said the voltage on the fuel shutoff was dropping to Zero then slowly coming back to 8 or 9 Volts. <<== That just ain't right
when using one for compression my Hose has a Check valve in it, and so does my Gauge so I don't need the tire valve in the adapter, anyway keep that in mind.
and Yes I realize that the voltage can drop below 9 volts and still keep the solenoid energized... Pull in is where the max current is drawn and it don't take much to hold it.
this is why I figure it should run long time off a set of good batteries. My guess is 6 volts would hold it once it has been initially Energized
it was in the other post I was a little more bothered by the Low voltage as that Poster said the voltage on the fuel shutoff was dropping to Zero then slowly coming back to 8 or 9 Volts. <<== That just ain't right
Thread Starter
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Mountain Pass
Joined: Jan 2005
Posts: 120
Likes: 1
From: Carmel Valley
Got the compression tester this afternoon, pulled all GP, None were any good. Open circuit from blade clip to body.
Cut down the Adapter indicated in the instructions and proceeded to test each cylinder. All but one read 100 the other 230.
Remembered what Lonewolf said and put some light oil in the last one and it jumped up to 500
The truck has not been run since Aug 3, time for some mystery oil tomorrow.
Thanks everyone for your help.
Cut down the Adapter indicated in the instructions and proceeded to test each cylinder. All but one read 100 the other 230.
Remembered what Lonewolf said and put some light oil in the last one and it jumped up to 500
The truck has not been run since Aug 3, time for some mystery oil tomorrow.
Thanks everyone for your help.
i ain't rite
Joined: Mar 2005
Posts: 65,448
Likes: 5,517
From: Marlboro Mental Hospital.
Lonewolf you da man!
Modding a GP or the HF kit adapter is the way to go. The small fitting in the HF kit worked but it was a PITA. I probably got inaccurate readings which is actually sort of a relief. These were taken on 5/19/2018 with the engine cold and the other GPs still installed:
1) 350 psi 2) 360 psi
3) 340 psi 4) 370 psi
5) 340 psi 6) 380 psi
7) 350 psi 8) 340 psi
It's probably time for me to dust off the HF compression tester, mod the adapter and do the compression test right.
Modding a GP or the HF kit adapter is the way to go. The small fitting in the HF kit worked but it was a PITA. I probably got inaccurate readings which is actually sort of a relief. These were taken on 5/19/2018 with the engine cold and the other GPs still installed:
1) 350 psi 2) 360 psi
3) 340 psi 4) 370 psi
5) 340 psi 6) 380 psi
7) 350 psi 8) 340 psi
It's probably time for me to dust off the HF compression tester, mod the adapter and do the compression test right.
Thread Starter
|
Mountain Pass
Joined: Jan 2005
Posts: 120
Likes: 1
From: Carmel Valley
Bingo
Finished wet compression test not good 1-450 2-275 3-275 4-300 5-400 6-275 7-500 8-300.
went ahead and installed new GP,
Started with dead truck, added new starter and new glow plugs, fired right up, smoked for a few seconds , idled at about 1000 after a few minutes dropped to about 500 and steady.
Thank you everyone for your input and help.
went ahead and installed new GP,
Started with dead truck, added new starter and new glow plugs, fired right up, smoked for a few seconds , idled at about 1000 after a few minutes dropped to about 500 and steady.
Thank you everyone for your input and help.
Scope Wizard
Joined: May 2019
Posts: 6,530
Likes: 25
Finished wet compression test not good 1-450 2-275 3-275 4-300 5-400 6-275 7-500 8-300.
went ahead and installed new GP,
Started with dead truck, added new starter and new glow plugs, fired right up, smoked for a few seconds , idled at about 1000 after a few minutes dropped to about 500 and steady.
Thank you everyone for your input and help.
went ahead and installed new GP,
Started with dead truck, added new starter and new glow plugs, fired right up, smoked for a few seconds , idled at about 1000 after a few minutes dropped to about 500 and steady.
Thank you everyone for your input and help.
As far as the compression.... run it for a bit and then re test it... you may have some valves that are not seating very well... but blow out the carbon first and then see...
where you are at .. and if it's running fine don't worry too much about it unless you are OCD like me
Logistics Pro
Joined: Jun 2017
Posts: 3,950
Likes: 509
From: Edmond, OK
If you do another compression test and get similar numbers it might be worth it to re-torque the head gaskets instead of doing an R/R.
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Posting Guru
Joined: May 2015
Posts: 2,036
Likes: 5
Loosen a bolt and then retorque it to the specified max, on my 6.9 international recommends you go 5ft/lbs over since the bolts are used. Do them ONE at a time in the torque sequence. If you Google it you can find the diagram.
Also I'd recommend a bottle of marvel mystery oil in the oil. It'll help any stuck rings free up and clean out the lifters. For best results test compression with the motor fully up to operating temp. Mine saw on average 80psi more per cylinder warm.
What it is cold doesn't really matter as long as it'll start and get warm.
Also I'd recommend a bottle of marvel mystery oil in the oil. It'll help any stuck rings free up and clean out the lifters. For best results test compression with the motor fully up to operating temp. Mine saw on average 80psi more per cylinder warm.
What it is cold doesn't really matter as long as it'll start and get warm.
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