jorgens

To check if a fuelaccumulator is working as it should?
It`s for a 83 with K-jet.

Jørgen

Mrmerlin

yes remove the set screw on the back side of the diaphragm housinging,
if gas comes out then the unit has failed.
Otherwise if the unit is more than 20 years old replace it ,
also replace the fuel check valve in the fuel pump

jorgens

Will do, thanks!


Jørgen

Ninjaxz750

Wow. I'm on this forum almost every day and each time I read one of these posts, I realize how little I know about these cars. I have no idea what the question or answer is here, so i'll be adding this to my "figure what this is/means" list.

Good thing I put it in Word or i'd run out of paper!!!

karl ruiter

CIS cars have a little reservoir of fuel pressure (fuel pushing against a diaphragm) after the pump in the left wheel well. I'm not totally sure if it is there to act as a fuel pressure damper like on the EFI cars or to aid in startup by producing fuel pressure instantly when the car is to be started, but I think it is mostly the second one. Does anybody have knowledge in changes is running behavior with and without a working accumulator?

AirtekHVAC

Pretty much the 2nd one. It keeps pressure on the fuel system for easier hot starting.