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Fuel Pump Leaking ?

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Old Jan 6, 2006 | 04:14 PM
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Default Fuel Pump Leaking ?

Got the 454 running for the first time in two years today. Fired right up and sounds healthy, but it is leaking gas out the two small holes in the top of the fuel pump. Is the this a sign of a bad diaphram or could I have the feed and return line reversed on the pump?
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Old Jan 6, 2006 | 04:53 PM
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My guess would be a bad diaphram =gas in the motor also.

I got your paper and will work on the spacer.
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Old Jan 6, 2006 | 04:56 PM
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watch out...when mine started to weep that was the end.....and you don't want to pump gas into the oil, so check your oil level
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Old Jan 6, 2006 | 07:34 PM
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when mine started leaking i tried to put it off until the end of the season until it died and left me stranded on the side of the road
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Old Jan 6, 2006 | 07:57 PM
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Got a new pump..question on the hoses. Which line goes to the screw in fitting on the pump.....the carb, the return, or the gas supply line?. I'm going to assume the smaller of the 3 fittings is for the return?


Thanks it's been off fo years and just want to make sure I had it hooked up right.
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Old Jan 6, 2006 | 08:21 PM
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From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
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screw in fitting goes to carb....big inlet is fuel coming in, the small "inlet" is actually the return line

[IMG][/IMG]
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Old Jan 6, 2006 | 09:53 PM
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Thanks Bob! I'll get the new pump on tomorrow and get the thing tuned.
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Old Jan 6, 2006 | 09:55 PM
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Did you use the balancer you got from me?
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Old Jan 8, 2006 | 07:56 AM
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Brett - sure did! Appears to be fine - thanks .

The pump diaphram was the culprit.....amazing how stuff goes just goes bad. I drove that car home two years ago and pulled it apart...pump wasn't leaking then. Must have dried out sitting on the shelf.............
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Old Jan 8, 2006 | 08:58 AM
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Mine was seaping on my 70 ls5 also. I replaced it but ran in to the problem of gas just kept coming out of the feed line like it was under pressure. Is this normal? Never had this happen on the few othere ones I have changed.
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Old Jan 8, 2006 | 09:56 AM
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I used a pair of vice grips on the line to stop the flow while I changed the pump. Syphon action is normal,,gas will run out.
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