Is there a way to rebuild these pumps, i have a 1000 mile ported ls6 that wont pump over 25 psi

could the guy that ported this thing maybe put it together wrong or should i just trash it

 

buy a melling hv pump. they aren't that expensive. i have one and absolutely love it.

 

How do you know it is the pump??? old o ring on there?? pinched o ring?? pick up tube slipped?? Check these before you trash the pump.....

 

i just put my stock pump back in and it has 30psi idle and 33psi on the gas. this will be the 3rd time apart now. I'll hit the dealer monday and get 2 blue o rings. what do you mean by slipped pickup tube. Has to be something dumb because the stock pump worked fine , a little slow on startup but worked. I only did this so i could put a duel roller chain on.

is there any gaskets or seals in the pump that can go bad or just teh pickup o ring

 

That is what i was going to ask