Joey Mack

you dont need dye. this is a process... you need to cap the output of the primary filter hose , and the fuel inlet to the block, below cyl. #3, and the the outlet below cyl. #5. this will isolate the 2 fuel galleries. then remove the 1/4" plug with a quarter drive ratchet. the plug is the visible one behind the overboard breather canister.. the hidden one is real, it is behind the timing cover. when you find the plug I mention, right below it is a hump in the timing cover.. the return gallery plug is there.. we wont go there right now.. since you will be dropping the pan to look... remove the overboard breather to give you room to work. rig up a fitting that lets you put air pressure to the galleries. it's 1/4 npt... 50-70 PSI should be enough.. dont go nuts on pressure... do not pull the EUP's .. apply air pressure and look up for bubbles and hissing.. it will be hard to see if the lower plug behind the timing cover is leaking, but you may be able to hear it through the breather hole. if you have a bore scope you can try to look in there to see.. honestly.. I never see that plug leak, but ... there is always the first one somewhere... I expect more guys posting their knowledge on this... jojo

heck of a tranny!!! jojo

what year is the E-7?

ray ray. what year and model truck? I think the 'P' is for the park brake. jojo

valve guides and seals sounds good, along worn rings and cylinders. once you get the heads off, I bet you just go ahead and re-build it.. good luck, jojo

air compressor... what sez u. Paul? jojo

ok... so stop... ASET-C.. put a real pressure gauge on the oil filter pad and see if the oil pressure is truly low.. on the front side of the oil filter pad, you will see some 1/8" ports.. hook a gauge to one of them to get areal oil pressure reading.. I just built one of these last week, keep in touch... jojo

ok, but how is the performance?? jojo

so the body comes down and now you have lost functions?? any chance an air line or wire was pinched by the body... jojo

you are not posting enough info, I am out... sorry...

follow the air lines back to the tank. if they go to the same fitting, or pressure protection valve, it is probably stuck.. if that is what is there, you can remove the valve and hook the lines direct, just to get it to a shop, or off the job site. what model is the truck.. I think 1M2P2 is an RD.. is this a U.S. truck? jojo

ok.... Can you give more info on your issue, and Im guessing this is an MR or LE? are there multiple issues? many guys here to help you.. jojo

Dammit!!!! seem's to be a trend with this issue... I am on my 3rd engine repair due to diesel in the crankcase, in as many months.. The lift pump, is likely the cause.. jojo

are you posting a question, or responding to an 8 year old post? jojo

I guess heat it up first, do the hot test, leave them out and tomorrow do the cold test... jojo

yes, can you spray it with soapy water and look for bubbles?

well,,, maybe you should tell us more about the trucks condition, and what you have already checked out looking for damage. jojo

did you check the internal oil pump gears for wear and the pressure relief valve for a weak spring and or scratches in the bore and on the piston?? and did you see the condition of the 13 crank journals before the bearings were rolled in?.. was the crank cut .010" and standard bearings were installed?... look at the old bearings to see if the part number has a P-10 after the part number. the crank should have been stamped with the cut if there was one. jojo

I know i made my comments about ether... however, being from Maine, I have worked on many Mack's with 'propane injection' systems on them.. many were dissabled but some still had the switch in the cab . it was labeled as... 'for cold starts only' ... there was a common propane torch bottle screwed to the injection system.. I know I may be contradicting myself, but I do not like ether in a diesel.. like i said before.. I dont mind learning , if i'm wrong about something.. just saying... jojo

fuel pressure issue, is probable, since it wont fire up after it shuts off while HOT.. compression is at its best at this point, so why... doesnt it fire back up??? and how does the fuel leave the pump so quickly?? and is there more to know?? if you ever put fuel filters on and didnt put enough fuel in them. it will run for a minute, but when fuel gets below the filter pad nipple, well.... there you are ... dead... so you pull the filter and re-fill it and then pump the primer, if you have one, and ... off you go... call me crazy.... jojo

yep.... that's the one... Mark.. good memory...

yes Mark, forceable entry... jojo

first time I heard that one Onyx...

ether is highly volatile. and has no lubrication in it.. I certainly dont know all the aspects, but I have worked on many worn out diesels that were fed ether until they died,,, (Diesel Morphine) if you will. or (Diesel Hospice)... anyway... this is one of those topics that I tread lightly on in my world, because..... far be-it for me to tell someone how to operate their machines that they have operated for years... know what I mean?? jojo

its pouring rain here, and I did all I can do in my shop til tomorrow,,, so im sittin here 'numbin it!!' with BMT on the laptop. good to chat with you Bob... jojo