p-pump timing
p-pump timing
i have a 2001 dodge ram short bed single cab truck with 11 1/2 inches of lift in the front and 9 1/2 in the back i took the stock 360 out of it and put a 96 12 valve in it with all the drivetran i rebuilt the motor and drove the truck for about four months then i added some hp mods i put a #0 plate 4000rpm gvs and 60 pound valve spring and i got the timing off when i put the injection pump back on o ya and the reason i took the injection pump off was that the timing cover busted on the front of my motor and i had to replace and there was a crack in the cover on the back of the injection pump when i got the donor truck so i had to replace that as well but anyway the timing is off and i need to know how far advanced i need to set it im running stock head bolts and with my hp mods i should be around 375 hp i think it needs to be around 16 or 17 degrees but im not sure can someone help me with this please
oh ya im not one hundred percent sure its my timing maybe someone can conferm it for me it is very hard starting and misses like crazy at low rpms and blows out alot of white smoke. When you take off it blows huge amounts of white smoke and falls on its face for a little bit and acts like it might die and then it just opens up and runs without missing but there is isnt any smoke no black smoke no white smoke and it doesnt seem to have the power it should it it runs better when its worm but it is still pretty bad i have changed all my fuel lines changed my overflow valve changed my lift pump bypassed my fuel heater changed my fuel filter checked the backlash on my valve 3 or 4 different times i have went over everything i did when i changed all that stuff over 3 or 4 different times i dont think i did anything wrong i am a really thorough person when i work on something but when i took my motor apart the first time i put it tdc and didnt touch the p-pump and it hadent moved when i put it back together but when i took it off the second time i had learned about the timing pin in the p-pump and just used that to time it back to the motor and then later i learned that the pin the pump methed of timing a p-pump to the motor isnt exactly accurate so i think my timing is way retarded and that is what is causing my problems if anyone has any ideas of what else it might be any suggestions would be appreceated
From what you have said, I agree that it is probably the timing. If you tow a lot I would put it at 15.5 - 16 degrees. If you do not tow you could go a little more but the more you advance it the more cyl. pressure you will get. With stock bolts and all I would not go over 17 no matter what. There are some that have gone to 19 deg. and say they have had no problems but I am skeptical of going that far with the engine all stock. I have mine set at 15.5 deg. I tow a lot and I have had no problems.
i dont tow much at all just a car on a trailer sometimes i though 16 or 17 degrees is where i needed to be i just wasnt one hundred % sure thank you for your suggestion and i forgot to put on my post that the head is ported and polished to the machein shop said they took an 1/8 of an inch out of the exhaust ports but i dont think that would have anything to do with my problems thanks again
ok i timed the pump to the truck and still runs like crap anyone got anymore suggestions as to what might be causing my problems i advanced it 16 degrees and now it runs worse than it did i cant even get it to idle and just cranking it makes white smoke blow out of the tailpipe like crazy it doesnt even have to fire im going to tripple check the timing and make sure i didnt miss anything but if its right does anyone have any suggestions as to what might be causing my problems. any help would be greatly appreciated i spent 6 months building this truck from the ground up and it ran great untill the timing cover broke and i had to remove the injection pump and i put the hp mods on it i have a 4x4 shop in the small town i live in and when i say small i mean like 2000 people and they all like to talk so this is really making me look bad and in a town like this bad pupblicity is a really bad thing for a new shop with young people running it so i really need some help
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there is a difference between pumps as far as the plungers and the grind of the cam
you have the 180 hp pump so for 16 dgerees timing you would need to be at 4.9 mm plunger lift. 17 degrees would be 5.1 mm.
if your timing is at 6.4 mm lift you are currently at 23.5 degrees
you have the 180 hp pump so for 16 dgerees timing you would need to be at 4.9 mm plunger lift. 17 degrees would be 5.1 mm.
if your timing is at 6.4 mm lift you are currently at 23.5 degrees
ok well that explains why its alot worse than it was i didnt know there was a diffirence from pump to pump. how do i use the cpl number to find out were pumps that i might need work on in the future will need to be set? thank you for the info you have help me out alot. i will try 4.9 mm and let you know how it turns out
heres a link to genos site they also list non dodge cpl numbers too. you may need to reference the other timing chart i posted for timing above 16 degrees
http://www.dodgeram.org/tech/dsl/FAQ/timing.htm
http://www.dodgeram.org/tech/dsl/FAQ/timing.htm
heres a link to genos site they also list non dodge cpl numbers too. you may need to reference the other timing chart i posted for timing above 16 degrees
http://www.dodgeram.org/tech/dsl/FAQ/timing.htm
http://www.dodgeram.org/tech/dsl/FAQ/timing.htm
Genos is just an advertiser on the dodgeram.org site.


