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Old 11-01-2017, 07:12 PM   #1
In The Ten Ring
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Truck start day: good and bad news.

So today dad and I tried to start my truck, the truck I have been working on since June 2013.

Good news:

She turns over.
Water jacket now has anti-freeze circulated.
Fuel pump works.
No radiator hose leaks (that we found).
Stop cock works (after we saw it leaking and closed it....ugh!)

Bad news:

Big fuel leak at end of hard line into carb inlet fitting.

So.....I need to learn about AN fittings....
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Old 11-01-2017, 07:24 PM   #2
Ol Blue K20
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Re: Truck start day: good and bad news.

Is it the fitting in the carb or the flare fitting that goes in the carb?
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Old 11-01-2017, 07:31 PM   #3
In The Ten Ring
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Re: Truck start day: good and bad news.

Leaks appeared to be at the end of the pre-bent hardline from Inline Tube, where it screwed into the replacement NAPA (fuel filter holder) fitting into carb. I would have bet money I had that on straight.

*I believe the mechanic lost or kept my original fitting into the carb....ugh.
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Old 11-01-2017, 07:47 PM   #4
Ol Blue K20
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Re: Truck start day: good and bad news.

The flare on the line or fitting may be bad.
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Old 11-01-2017, 09:10 PM   #5
randy500
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Re: Truck start day: good and bad news.

Had many new fuel lines leak when first installed, have to tighten it way tighter than you think for it to seal the first time. Get a good quadrajet inlet fitting wrench so you don't strip out the carb.
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Old 11-01-2017, 09:17 PM   #6
GASoline71
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Re: Truck start day: good and bad news.

Randy beat me to it. The first time you seat a new hard fuel line (flare fitting) you need to wrench on it pretty hard.

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My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread.

The Rebuild of Creeping Death after the wreck

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I would never rebuild a 305.
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I love using vacuum gauges as part of the carb tuning process. I hook the gauge to the inside of my garbage can and leave it there.
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Remember Murphys 2nd law of mechanical relationships... "OPPOSING COMPONENTS ATTEMPTING TO OCCUPY THE SAME SPACE, AT THE SAME TIME, GENERALLY END UP OCCUPYING ADJOINING SPACE AT THE BOTTOM OF THE OIL PAN"
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Its cheaper to listen to advice given when you ask for help than it is to ignore everyone and wait for carnage.
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Old 11-01-2017, 10:09 PM   #7
Ol Blue K20
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Re: Truck start day: good and bad news.

X3 on what Randy and Gas said.
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