Stalling when lifting foot off accelerator

[chevss442]

Hi, I have a DB2 mechanical injection pump. Recently the engine has started to sometimes stall when I lift my foot from the accelerator, like when coming to a stop sign. Does anyone have any ideas what could cause this?

Thanks

[JohnC]

Check the lift pump operation and the fuel filter.

[chevss442]

I belileve the lift pump and filter are good. Both are fairly new.

I have a fuel pressure guage on the A pillar. It reads the lift pump pressure. I have 5psi with the engine running when the stalling occurs. On hard accelleration the pressure will drop to about 2psi then recovers back to about 4psi when going at a steady speed.

Thanks for the reply.

[JohnC]

If you're reading the pressure after the filter, you'r fine. If not, it's still worth checking. It only takes one bad load of fuel and a couple of minutes to clog.