Hi im new to this site, and i have aproblem my 2001 duramax injector pump leaks, pump works fine, i have done some research and was told i could repair this by changing some "o" ring and copper washers, ived worked on gasoline engines but not diesel (unless you count my tractor) does anyone have any info i can use. Thanks

 

ive never rebuilt a pump, ive always replaced them. imo it would be better to replace it with a new one, the truck will drive a whole lot better

 

If your CP3 is leaking i dont think the truck would be running fine.... but I agree, its probably better to replace it then to muck around trying to fix it yourself

 

new user to this site and new owner of duramax question is. ive replaced my injectors and now i have a new problem i have oil and fuel coming out of a tube on the front right corner of the block is this a leaking injector or do i have other issues. this tube is somehow connected to the crankcase but with the limited area you cant see where its connected but if you use a blow nozzle and blow air into the tube with the oilcap loose it will blow the cap off. if it is an injector how can i tell which one it is i replaced all 8 of them. in reading all the posts i am impressed with your site and look forward to future visits to help get this truck back to its original reputation.

 

my truck is doing the same thing the hose i beleive is the pcv i took the pullyes and the bracket off while im doing the injector nozzels to inspect it and it is all washed clean from the vent in the back of the pcv and i think that its from the fuel leaking into the oil pan then it leaks thru the back of the pcv vent what a mess im still working on it and hopeing that i can get some help with it i dont know if its the injectors or the pump i hope it is the injectors im changing nozzels to the 50 hp kind in hopes of better mileage and performance and also im adding a filter and lift pump that alligator recomended well i hope we can geter fixed ill let ya know what i can find out thanks