6.5 help
 

hello i am new to the website and just had a couple of hopefully simple and painless questions. i recently bought a 1993 c2500 with of course a 6.5 td it is a manual transmission. in the past i did work for a company in which we had three different 6.5s a 93 like mine which i never drove a 94 that i always drove and a 94 daully that i drove on occasion. the 93 i bought seems to be a pooch compared to the 94 i had before. upon talking to the guy who i worked for he told me that is just the way it is between those two years and i was wondering if that is correct. he also said main reason is because the 94 went to a pmd set up and the 93s did not have them is this true. thank you for your time.

i believe so let me check my notes but iirc they did

thank you for checking however im little dumb to alot of these abverations what is iirc. basiclly i probally should have said this but what i mainly notice is that there is a lack of power can not hear turbo at all and please dont think im one of the kids who wants to hot rod because thats not the case. i have replace the air filter which looked like it had been in a mud puddle today for process of elm i am having it stright piped. i just dont really know where to start it runs and drives fine just not alot of power or torque. thank you again. if you have any other ideas i would love them.

iirc means if i remember corectly
also feel lucky that pump is the 6.5s down fall
also saying about the turbo is there any shaft play any damage to the inducer (compressor) also check that fuel filter as well

dont know how to check the shaft or compressor but it all seems tight from what i can tell. the fuel filter and lift pump is probally next on my agenda just asking opions before i go dumping a bunch of money.

you can turn the fuel screw up on the injection pump to get more power

not sure where it would be or how far to do it thats kinda ifie to me

heres some info. https://www.dieselbombers.com/6-2l-6...ctor-pump.html

you have to realize that the injection pump on your truck is a DB2. its a two plunger design with flows slighty more fuel than the old 6.2 pumps.

the 94 and my truck have a DS4 injection pump. it has 4 plungers and has the potentional to flow a lot more. probably why you feel less power

ok so i replaced the fuel filter and the "lift pump" meaning the pump on the frame rail however i dont belive it works either. whats the best way to figure out if it is working im real close to just putting it on a switch.

hook up 12 volts to it and see if it starts buzzing. if it does check the relays and fuses because it should start buzzing when you turn the key