I am considering a partially restored Mark I available near me. The seller says all parts are there except the fuel pump. The engine was rebuilt but I would like to know if the fuel pump was built into the engine (3.4L) or was separate. If it was separate it seems like it would be easier to find a replacement. Thanks.

Submitted by vineyardman68@… on Wed, 02/13/2013 - 12:28

Wooaaa!!!!
Hey guys, I won't say NEVER about engines with internal fuel pumps, but I have not seen any engine with an internal fuel pump with the exception of maybe an old MayTag washing machine engine. A gasoline washing machine? You bet----
This engine had fuel/oil mixture, ran without a load on only the one cylinder and would PUTT about every second or so, then based on how much oil was mixed with the gas would pop out a perfect ring of smoke, As the load was increase, so was the RPM (automatically) until it would run at a steady PUTT_PUTT_PUTT. More then likely around 75 to 100 RPM. There was no fuel pump persay, but sucked what it needed to run. (Yea I know, that was a long- long time ago, but we had one)
Other engines have BOLT on fuel pumps, generaly on the side and as mentioned above, when injection became the norm, these pumps were discontinued for electric pumps, Some would suck the fuel out of the tank on older cars, but more then likely are inside the fuel tank--a real bummer, but car manufactures don't build them for our benifit.

Submitted by coventryclassi… on Wed, 02/13/2013 - 10:20

William, it was SOP for cars before fule injection. Fords, Chevys, MoPars all had a mechanical fuel pump run off either the cam or crank excentric. NASCAR didn't allow electric pumps till fuel injection.

Submitted by steve.depolis@… on Tue, 02/12/2013 - 18:15

Thank you! Now that you mention it, I remember seeing a Mark with a mechanism in the boot but did not know what it was.

Submitted by steve.depolis@… on Tue, 02/12/2013 - 18:15

Thank you! Now that you mention it, I remember seeing a Mark with a mechanism in the boot but did not know what it was.