Carter M6905 Fuel Pump

[67428GT500]

Has anyone else had issues with excessive high pressure? Better alternative?

[RustyCrankshaft]

Yep. Put a 6905 on the 360 in my 73 camper special and it was making over 9psi and blowing the needle off the seat in the AFB that came on the truck. Bought another 6905 from the same parts store and it was fine.

[WerbyFord]

Has anyone else had issues with excessive high pressure? Better alternative?

My 6905 is backed up with a carter electric, has a Holley regulator up front. Its set to about 7psi, haven't blown thru anything yet.
If your engine needs a 6905 a regulator is probably a good idea anyway.

I'm surprised though, for $100 you'd think there'd be better quality control than that. We used to buy running CARS for $100 just a few years ago. Well ok, when Jimmy Carter was president.

[fryedaddy]

i have a 6905 thats over 30 years old and had it on 3 different fe engines and its still a good pump,no issues ever,but you can get a dud im sure no matter what your buying

[cattleFEeder]

Throw this on https://www.summitracing.com/parts/edl-1724/overview/make/ford
6 psi max works like a champ.

[67428GT500]

I have a factory dual quad car. However, I think it is causing a very rich idle.

                 

[jholmes217]

Yes.  I had to put a pressure regulator on it, and it is fine now. 

[67428GT500]

I took the advice given and bought the Edelbrock 1724 pump. Shows 5.75 PSI.  I also changed to the ,097 Needle and seats  Drew suggested.
I appreciate the advice. Hopefully the tuner can get rid of the rich smell despite there being no smoke to indicate it is.

                                                                                                        -Keith

[Barry_R]

Can't go by smell.  A lean mixture will put out unburned hydrocarbons and it'll sting your eyes.

[67428GT500]

Wet black plugs might be a clue though, right Barry?  There is no black smoke, which I thought was strange.

                                                                                                     -Keith

[cjshaker]

Dry, or "sooty" black typically indicates rich in fuel, while wet black typically indicates an oil control problem. For rich to be "wet black", it would almost have to be drowning in fuel and leaving tell-tale signs of black exhaust when the throttle is stabbed or blipped, like you mentioned. Like always, pictures might help.

[WerbyFord]

I've seen "Wet black" with cold engine or misfiring.
Leave plugs out a few minutes. If the "wet" dries out, it was gas. If stays wet, it was oil. Well, or water.

[67428GT500]

Yes, it dries out.  I really think the needles bouncing off the seats in the Holleys have cause a myriad of issues. The M6905 Carter was in the 9.5 PSI area.
I went with the 1724 Edelbrock pump and the .097 needle and seats. I'll know more in another week or two when my ribs heal and I can row a four speed though the gears without fear of damaging the healing process.