Fuel pump leaking 544

lelshaddai · Oct 5th, 2021, 02:21

I have tried two different fuel pumps. Both have leaked between gaskets. The screws back out over time and it leaks. This causes a seal problem and the pump cannot create a proper vacuum. It makes it difficult to start. I have installed a booster electric pump and that solved the fuel delivery to get her started. However the pressure made the mechanical pump leak. I tighten up the screws and it stops. I have used lock tight on the screws and this does not stop the screws backing out. I used bolts on the first one and it still leaked. Any ideas?

Army · Oct 5th, 2021, 08:57

How about a gasket?

Volvo_133 · Oct 5th, 2021, 08:57

Fit a spring washer to each screw.

lelshaddai · Oct 5th, 2021, 21:27

Already used lock washer. Stripped out two bolts today. Trying bolts , lock washers and nuts again on those.

Derek UK · Oct 6th, 2021, 13:04

The pump shown is a pattern type replacement. Italian? It's not one of the better ones for the task. Buy from a Volvo specialist not Autozone or NAPA.

Oct 5th, 2021, 02:21	#1
lelshaddai Senior Member Last Online: Dec 30th, 2022 02:42 Join Date: Jun 2015 Location: Mesa, Arizona	Fuel pump leaking 544 I have tried two different fuel pumps. Both have leaked between gaskets. The screws back out over time and it leaks. This causes a seal problem and the pump cannot create a proper vacuum. It makes it difficult to start. I have installed a booster electric pump and that solved the fuel delivery to get her started. However the pressure made the mechanical pump leak. I tighten up the screws and it stops. I have used lock tight on the screws and this does not stop the screws backing out. I used bolts on the first one and it still leaked. Any ideas? __________________ 1962 Volvo PV544 1951 Studebaker Starlight State Commander Coupe 1953 Studebaker Starlight Commander

Oct 5th, 2021, 08:57	#2
Army marches on his stomach Last Online: Feb 11th, 2022 03:15 Join Date: Jan 2018 Location: Somewhere in the Netherlands	How about a gasket? __________________ 1961 Volvo PV544 the quick and easy in between project(!) 1981 Mercedes 300D <=> 230 diesel to petrol conversion project 1965 Series 2a Station Wagon mega build 1992 Mercedes 190E The car that works!

Oct 5th, 2021, 21:27	#4
lelshaddai Senior Member Last Online: Dec 30th, 2022 02:42 Join Date: Jun 2015 Location: Mesa, Arizona	Already used lock washer. Stripped out two bolts today. Trying bolts , lock washers and nuts again on those. __________________ 1962 Volvo PV544 1951 Studebaker Starlight State Commander Coupe 1953 Studebaker Starlight Commander

Oct 5th, 2021, 08:57	#3
Volvo_133 VOC member Last Online: Yesterday 10:03 Join Date: Jan 2008 Location: Sheffield	Fit a spring washer to each screw.

Oct 6th, 2021, 13:04	#5
Derek UK VOC Member Last Online: Yesterday 14:29 Join Date: Jul 2006 Location: Chatham	The pump shown is a pattern type replacement. Italian? It's not one of the better ones for the task. Buy from a Volvo specialist not Autozone or NAPA.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)