First Major engine work on Diesel
Logistics Pro
Joined: Nov 2013
Posts: 3,930
Likes: 1,201
From: Mojave, Ca
Popping noise out of the intake is a pretty good sign that your intake valves are leaking. You can inject compressed air into your bad cylinder's glow plug holes while its at TDC on compression stroke and listen to the exhaust, intake, and breather for hissing noises.
Based on your discription, im guessing your intake valve guides are gummed up and the valve springs arent strong enough to close the valve completely.
Based on your discription, im guessing your intake valve guides are gummed up and the valve springs arent strong enough to close the valve completely.
Elder User
Joined: May 2018
Posts: 695
Likes: 22
Based on your discription, im guessing your intake valve guides are gummed up and the valve springs arent strong enough to close the valve completely.
Senior User
Joined: Mar 2014
Posts: 434
Likes: 2
From: Santa Cruz Mountains
Raaaaaaymooooond......sizzzle. Too hot dude. Awesome.
i was thinking if he blew compressed air up........anyway...
what kind of “injector juice” did you put in the fuel filter? there’s some narly stuff outa therea..
diesel Kleen tank and fuel cleaner shut my truck down after 3 fill ups from its use. Could be something there.
tjc talked bout a trick with cold water on the pump to see its toasty.
and Raymond....whats your diagnosis? What or where do you start with these conditions?
i was thinking if he blew compressed air up........anyway...
what kind of “injector juice” did you put in the fuel filter? there’s some narly stuff outa therea..
diesel Kleen tank and fuel cleaner shut my truck down after 3 fill ups from its use. Could be something there.
tjc talked bout a trick with cold water on the pump to see its toasty.
and Raymond....whats your diagnosis? What or where do you start with these conditions?
Senior User
Joined: Mar 2014
Posts: 434
Likes: 2
From: Santa Cruz Mountains
So when i bought my f350 the gps were bad and it smoked white until i actually would drive it....didnt really go away until i burned all the fuel from the exhaust that didnt burn during the cranking process. And it smoked
alota white. Thatsa fuel in the exhaust. Not blown head and water.
Not sure how the black means fuel cause its oil through the rings that makes it black which is why under load it turns black because the rings are worn and oil pushes through them “under load” or with more pressure or something like that....
the 2 and 4 gps wet seems to say its not burning the fuel or not compressing the fuel so it goes to exhaust and viola...white smoke...which is new to this truck....okiedokie
black smoke is not new to this truck so thats normal i am guessing.
why is 2 and 4 not compressing the fuel overnight?
valves are open
rings finally gave out
pump timing is good or lots more will be happening it seems.
popping in the intake seems like 2 and 4 have open intake valves on compression stroke. Would they have to be all the way open for 0 compression per the test?
hmmmmm
alota white. Thatsa fuel in the exhaust. Not blown head and water.
Not sure how the black means fuel cause its oil through the rings that makes it black which is why under load it turns black because the rings are worn and oil pushes through them “under load” or with more pressure or something like that....
the 2 and 4 gps wet seems to say its not burning the fuel or not compressing the fuel so it goes to exhaust and viola...white smoke...which is new to this truck....okiedokie
black smoke is not new to this truck so thats normal i am guessing.
why is 2 and 4 not compressing the fuel overnight?
valves are open
rings finally gave out
pump timing is good or lots more will be happening it seems.
popping in the intake seems like 2 and 4 have open intake valves on compression stroke. Would they have to be all the way open for 0 compression per the test?
hmmmmm
Mountain Pass
Joined: Jan 2014
Posts: 170
Likes: 10
From: South Carolina
Raymond, all you ever do is criticize posters when they try and help instead of helping the OP. At least we try to help. So what does your 30 yrs experience on diesel say on this? All us plebs are waiting on your words of wisdom.
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Mountain Pass
Joined: Jan 2005
Posts: 120
Likes: 1
From: Carmel Valley
OK, picking up a set of Heads tomorrow, Once I finish work on my 1981 Camper, will start pulling the diesel and getting to the bottom of this. It has been burning oil, black smoke on start and when under load, so my just rebuild the whole thing while I am at it. Thanks for your help and insights everyone. will be back when I start the work I am sure.
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Logistics Pro
Joined: Nov 2013
Posts: 3,930
Likes: 1,201
From: Mojave, Ca
Coming through from where?? Do you have any idea how sloppy a valve guide would have to be to actually see combustion gases coming through a guide?
Being a full-time heavy truck/diesel engine mechanic for over 30 years, that too would be a first for me or anyone I ever worked with.
Being a full-time heavy truck/diesel engine mechanic for over 30 years, that too would be a first for me or anyone I ever worked with.
Elder User
Joined: May 2018
Posts: 695
Likes: 22
Ack. Pull valve cover. Run it and see if you get any combustion gasses coming thru.
Elder User
Joined: May 2018
Posts: 695
Likes: 22
OK, picking up a set of Heads tomorrow, Once I finish work on my 1981 Camper, will start pulling the diesel and getting to the bottom of this. It has been burning oil, black smoke on start and when under load, so my just rebuild the whole thing while I am at it. Thanks for your help and insights everyone. will be back when I start the work I am sure.
More Turbo
Joined: Oct 2014
Posts: 697
Likes: 82
From: Alberta Eh
You won’t have oil spraying all over, you can idle with the valve covers off to troubleshoot. There will be some oil slinging around, there has to be. I’d be real worried if there wasn’t. I wouldn’t idle for very long, but YouTube is filled with videos of guys trying to find the famous IDI tick noise, idling with their covers off. One of my favourite vids is of fellow member Macrobb starting his 7.3 on a stand with the covers off. I cringe at the amount of either he uses lol.
Elder User
Joined: May 2018
Posts: 695
Likes: 22
You won’t have oil spraying all over, you can idle with the valve covers off to troubleshoot. There will be some oil slinging around, there has to be. I’d be real worried if there wasn’t. I wouldn’t idle for very long, but YouTube is filled with videos of guys trying to find the famous IDI tick noise, idling with their covers off. One of my favourite vids is of fellow member Macrobb starting his 7.3 on a stand with the covers off. I cringe at the amount of either he uses lol.
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