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Old 02-08-2019, 05:51 PM   #26
ga-stepside
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Re: Grinding/Screech from Block

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Originally Posted by sick472 View Post
Look at the video at 7 seconds and it looks like the "Eddy" is missing a plug that would normally be used for power brakes. And, again at 29 seconds. AND at 32 seconds...this one is the money shot...I don't see a plug. I hope that's it...easy fix!
I saw the same thing,
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Old 02-08-2019, 08:40 PM   #27
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Re: Grinding/Screech from Block

SOLVED - 5/16th plug in the hole mentioned.

Can anyone explain what that hole is for (I heard power braking?) and if these trucks use that?
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Old 02-08-2019, 08:42 PM   #28
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Re: Grinding/Screech from Block

It's a vacuum port that can be used for a power brake booster. Trucks use it if they have power brakes (vacuum boost).
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Old 02-08-2019, 09:14 PM   #29
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Re: Grinding/Screech from Block

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Originally Posted by RhapidFyre View Post
SOLVED - 5/16th plug in the hole mentioned.

Can anyone explain what that hole is for (I heard power braking?) and if these trucks use that?
On the video you have a power brake booster, where do you have the hose from it hooked to now?

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Old 02-08-2019, 09:22 PM   #30
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Re: Grinding/Screech from Block

Yep. Sounds like a massive vacuum leak
Plug that port on the back of the carb.
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Old 02-08-2019, 10:15 PM   #31
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Re: Grinding/Screech from Block

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On the video you have a power brake booster, where do you have the hose from it hooked to now?
Honestly I didn't think anything of it. The noise was originally not happening, so I think it may have come off and I never even thought of it. This truck is my first project, AND my first exposure to mechanical knowledge.

I'll check for that hose at first light tomorrow!
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Old 02-09-2019, 12:02 AM   #32
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Re: Grinding/Screech from Block

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Originally Posted by RhapidFyre View Post
Honestly I didn't think anything of it. The noise was originally not happening, so I think it may have come off and I never even thought of it. This truck is my first project, AND my first exposure to mechanical knowledge.

I'll check for that hose at first light tomorrow!
It could be that the hose fitting was not tighten and vibrated out.
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Old 02-09-2019, 04:36 PM   #33
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Re: Grinding/Screech from Block

The hose coming off the forward portion of the brake booster is going into a plug that's attached to the top of the intake, and the other side of the plug is going to a hardline towards the back. I'm assuming it's just bypassing the carb.
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Old 02-09-2019, 05:38 PM   #34
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Re: Grinding/Screech from Block

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Originally Posted by RhapidFyre View Post
The hose coming off the forward portion of the brake booster is going into a plug that's attached to the top of the intake, and the other side of the plug is going to a hardline towards the back. I'm assuming it's just bypassing the carb.
That should be fine, my AMX power booster come off the intake, its the same vacuum as the bottom of the carb. No clue what that hard line is for, possibly for the transmission.
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Old 02-09-2019, 05:47 PM   #35
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Re: Grinding/Screech from Block

Quote:
Originally Posted by RhapidFyre View Post
SOLVED - 5/16th plug in the hole mentioned.

Can anyone explain what that hole is for (I heard power braking?) and if these trucks use that?
If I am not mistaken, that hole is threaded for 1/4" tapered pipe. A 5/16" fitting may still allow a small leak. Spritz the fitting with carb cleaner, and if the idle changes, get a 1/4" tapered pipe plug. It should seal with no thread treatments, BTW.
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Old 02-10-2019, 10:03 PM   #36
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Re: Grinding/Screech from Block

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Originally Posted by Steeveedee View Post
If I am not mistaken, that hole is threaded for 1/4" tapered pipe. A 5/16" fitting may still allow a small leak. Spritz the fitting with carb cleaner, and if the idle changes, get a 1/4" tapered pipe plug. It should seal with no thread treatments, BTW.
yep, it should be a 1/4" tapered pipe plug that goes in there
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