DMC Houston Fuel pump failure.

[CFI]

Ok i got enough to worry about let alone the 3 year old DMCH pump.
Should i be concerned that it may go south in traffic (always fun)?
Should i plan on a new pump rather than the stainless fuel lines?
Should i plan on a new pump rather than the dash restoration?

This is off topic but once this craziness is over you should make a road trip to Va Beach. There’s 3 owners down here that get together on a regular basis for food, drives, etc.

[Ron]

Ok i got enough to worry about let alone the 3 year old DMCH pump.
Should i be concerned that it may go south in traffic (always fun)?
Should i plan on a new pump rather than the stainless fuel lines?
Should i plan on a new pump rather than the dash restoration?

(D) All of the above.

[Ron]

After reading this and similar threads one must ask;

Did anyone buy a DMCH pump that didn't fail?

5, including one with a bad check valve (Lenny's).

[bfloyd]

I've had mine going on 5, almost 6 years. No issues at all. I've put about 11k miles on my car since I installed the new pump.

[FABombjoy]

Did anyone buy a DMCH pump that didn't fail?

Mine's working @ EFI pressure (44psi). Although one hot summer day, the feed hose rather inconveniently blew off of the stock K-jet barb as the included hose is not rated for barbed fittings, even at the reduced pressure.

Made up a set of nylon feed/return lines and expect those to last longer than the pump.

[steve]

This is off topic but once this craziness is over you should make a road trip to Va Beach. There’s 3 owners down here that get together on a regular basis for food, drives, etc.

Sounds good
Steve

[Delorean Industries]

Mine's working @ EFI pressure (44psi). Although one hot summer day, the feed hose rather inconveniently blew off of the stock K-jet barb as the included hose is not rated for barbed fittings, even at the reduced pressure.

Made up a set of nylon feed/return lines and expect those to last longer than the pump.

You sir are playing with fire. I would hate to see a stock internal prv go lean under load over 160kpa. If you question it at all in your application it should be gone.

[DaraSue]

After reading this and similar threads one must ask;

Did anyone buy a DMCH pump that didn't fail?

Going on 4 years and 24,000 miles here. Although I keep getting a random fuel vapor smell in the cabin. (Solutions tried so far: replacing the o-ring under the blanking plate, tightening a clamp and replacing the vent lines. All of which seemed to work for a while but then it came back. Research is ongoing...)

[Michael]

Going on 4 years and 24,000 miles here. Although I keep getting a random fuel vapor smell in the cabin. (Solutions tried so far: replacing the o-ring under the blanking plate, tightening a clamp and replacing the vent lines. All of which seemed to work for a while but then it came back. Research is ongoing...)

Try replacing the fuel cap.

[Horsebox]

I bought mine five years ago and I can’t fault it. Everything including the sender (and therefore fuel level indications and fuel warning light) work as you’d expect from a modern car.

I did however go through the whole fuel pump electrical circuit before installing it, to see where the electrical losses were happening (bad connections, particularly the washer bottle area ones). I gained around 2V across the pump after cleaning up all the connectors, measured with fuel pump running.

Maybe I just got lucky, but these cars are so old now, my stance on tackling a system, fuel pump or whatever, is just to assume it’s all hanging on for dear life, so strip it all back and test from scratch.


Sent from my iPad using Tapatalk