fuel pump 1974 70 hp johnson

newtowater

Cadet
Joined
May 13, 2009
Messages
11
I have been working for the past few months trying to get this engine running. I ordered an oem manual and set about rebuilding the carbs with new
floats and needle valves and seats, blew everything out with compressed air, all passages are clear. decided while I was at it to replace fuel pump screen and gasket. Now I cannot get the pump cap to seal.It spews fuel out when I squeeze primer bulb. Didnt think something that looked so simple would be keeping me from turning the key, but any ideas short of replacing the cap assy?
 

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: fuel pump 1974 70 hp johnson

probably bad gasket
Part Number: 0312679
Description: GASKET 5PK
Pack Qty: 1
Dimensions: 1.75 x 1.75 x 0.08 (in)
Weight: N/A
Equivalent Parts: 0332694,0338879

or sierra part # 18-2900
 

newtowater

Cadet
Joined
May 13, 2009
Messages
11
Re: fuel pump 1974 70 hp johnson

Screen and gasket are both new. Anyhting else you can think of?
 
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