350Q fuel pump question

Joined: August 16th, 2015, 3:44 pm

June 13th, 2018, 1:44 am #1

Hello, 
I am in the final stages of testing my new engine, a rebuilt 350Q using Q parts from my old 307Q in a Lancer 23, 1970.
I had the Carter pump rebuilt and it looks like the original push rod is not making contact with the foot/lever of the pump.
The people who rebuilt the pump are a reputable outfit that does good work, they assure me they did not modify or alter the pump in any way.

So how is it that the original push rod (3/8" x 5 1/4") now does not generate the lift necessary for the pump to draw gas??
I can see the rod going up and down on cranking the engine, there is no issue with the cam/excentric on the camshaft, same as before.
I am stumped and in dire need for some ideas or advice.
Thanks
Pierre
 
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Joined: August 16th, 2015, 3:44 pm

June 14th, 2018, 12:12 pm #2

Anyone heard of Q engines push roads for fuel pumps be fitted with "caps"??.  If I have a missing "cap" this would explain the mismatch of length necessary to actuate the pump.
Thanks
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Joined: May 20th, 2011, 7:30 pm

June 29th, 2018, 1:29 am #3

Pierre,
I've installed a few of these Carter mechanical fuel pumps; our last Chris-Craft, a '78 Lancer 23 Overnighter w a Marine Power 350 GLV and last month on our current XK-22 w the 350FLV, and they can be a trick to install. Are you positive you have the push rod in the correct position when you install the fuel pump? (fully retracted)

The rod typically will slide down and block your pump lever unless you slip the lever in there quickly. I once used a dab of grease to sticky up the rod to keep it from sliding down. Gave me time to position the fuel pump/lever properly.

I hope that helps but if that's not the issue, then I'll have to leave it to others familiar with the Q set up to possibly provide the answer.

Skol!
Craig
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Joined: August 16th, 2015, 3:44 pm

June 30th, 2018, 12:00 pm #4

clindberg wrote: Pierre,
I've installed a few of these Carter mechanical fuel pumps; our last Chris-Craft, a '78 Lancer 23 Overnighter w a Marine Power 350 GLV and last month on our current XK-22 w the 350FLV, and they can be a trick to install. Are you positive you have the push rod in the correct position when you install the fuel pump? (fully retracted)

The rod typically will slide down and block your pump lever unless you slip the lever in there quickly. I once used a dab of grease to sticky up the rod to keep it from sliding down. Gave me time to position the fuel pump/lever properly.

I hope that helps but if that's not the issue, then I'll have to leave it to others familiar with the Q set up to possibly provide the answer.

Skol!
Craig
Thanks Craig,
The Q engine's pump setup is quite different.  We have found the right pushrod now ... For the record, and anyone interested in Q engines, the pushrod is 5 1/2" in length to actuate the Carter pump.
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