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Starting problem after sender change.
#1270022 06/23/2018 5:50 PM
Joined: Aug 2017
Posts: 76
South Yorkshire
S
Stooby
Offline
'Bolter
Stooby
'Bolter
S Offline
Joined: Aug 2017
Posts: 76
South Yorkshire
Recently changed the fuel sender on my 56 pickup.The truck started and ran ok before I changed the sender(all be it 2 weeks ago when it ran last).Now it won't start.Had a look at the spark plugs and they were dry.I took the fuel line off where it enters the carb(2 jet Rochester)and fuel spat out with some air bubbles and seemed to be under pressure.What can I check next.Could the fuel line be air locked and how do I clear it.Anything else I can check.Thanks in advance.
Re: Starting problem after sender change.
Stooby #1270068 06/24/2018 2:11 AM
Joined: Jun 2011
Posts: 5,096
Longmont, CO
E
EdPruss Offline
Crusing in the Passing Lane
EdPruss
Crusing in the Passing Lane
E Offline
Joined: Jun 2011
Posts: 5,096
Longmont, CO
Float stuck? Pour some fuel down carb., does it fire? Built in filter in carb., is it clear?

Ed

'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Re: Starting problem after sender change.
Stooby #1270070 06/24/2018 2:19 AM
Joined: Mar 2010
Posts: 10,272
Virginia
5
52Carl Offline
Renaissance Man
52Carl
Renaissance Man
5 Offline
Joined: Mar 2010
Posts: 10,272
Virginia
If you have a behind-the-seat tank, you have the pipe coming out of the top of the tank at the sending unit. Your fuel pump therefor needs to pull fuel up hill to get fuel out of the tank. I small leak in the fuel line between the fuel tank and the fuel pump will suck air, thus preventing the fuel pump from pulling fuel.
Check all fittings for tightness between the top of the tank and the fuel pump.
An empty fuel tank will cause your symptom as well. smile

1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission

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