Is the needle adjustable if it comes not on zero?

It's not adjustable as there's no way to remove the casing without damaging the gauge. The only way I know of to sort of "zero" it out is to get a Lightning (the '99-'04 ones, not the new ones that catch on fire on dealership lots) and run 100 shots of NOS on top of that Eaton twin screw SC! That should "zero it out" LOL

This is the right tool for carburator balancing (equalization)?

https://www.revzilla.com/product/motion-pro-syncpro-carb-tuner?gclid=Cj0KCQjwm9vPBRCQARIsABAIQYcBIUHVlDOiUsPwAVH8Bc2y026Vic6t1DMvPHTE-gGq-siL7UhyC34aAkZbEALw_wcB

Will this work on a2012 Chevy Equinox? Just screws into one cylinder at a time?

Its a vacuum pressure gauge. Not a cylinder pressure gauge.

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OTC 5613 Vacuum/Pressure Gauge Kit - Test Vacuum Lines, Low Pressure Fuel Systems and More - Quickly Diagnose Internal Engine Problems like Bad Rings, Valves, and Leaking Head Gaskets

Product ID: 3831878

Details

Brand
OTC
Item Weight
1.07 Grams
Item dimensions L x W x H
10.25 x 9.1 x
Material
Chrome
Number of Items
1

🧰Durable blow-molded protective case

⏱️3.5-inch dual vacuum/pressure gauge

🛠️Complete adapter kit for versatile testing

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€ 136.28

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Diagnose like a pro, fix like a boss — never miss a beat under the hood!

UNIVERSAL COMPATIBILITY - Includes adapters for most vacuum lines and low-pressure fuel systems, making it your all-in-one diagnostic tool.
EFFORTLESS WORKFLOW INTEGRATION - Built-in rear hook lets you hang the gauge at eye level, keeping hands free and diagnostics efficient.
BUILT TO LAST BUILT FOR THE JOB - Rugged chrome bezel and protective boot ensure durability in demanding shop environments.
PRECISION DIAGNOSTICS AT A GLANCE - Dual-purpose gauge reads vacuum and pressure with four measurement scales for pinpoint accuracy.
SECURE STORAGE INSTANT REFERENCE - Sturdy blow-molded case with removable lid and detailed instruction chart keeps your kit organized and ready.

The OTC 5613 Vacuum/Pressure Gauge Kit is a professional-grade diagnostic tool designed to test vacuum lines and low-pressure fuel systems with precision. Featuring a large 3.5-inch dual-purpose gauge with four measurement scales, it quickly identifies engine issues such as bad rings, valves, and leaking head gaskets. The kit includes versatile adapters and a rugged protective case with a handy instruction chart, making it an essential, durable solution for automotive technicians seeking fast, reliable diagnostics.

Specifications

ASIN	B0050SG9KW
Best Sellers Rank	#24,878 in Automotive ( See Top 100 in Automotive ) #15 in Fuel Pressure Testers
Brand Name	OTC
Customer Reviews	4.7 4.7 out of 5 stars (1,722)
Global Trade Identification Number	00731413418563
Included Components	Item
Item Dimensions	10.25 x 9.1 x 4 inches
Item Weight	1.07 Grams
Manufacturer	OTC
Material Type	Chrome
Model	5613
Part Number	5613
Thread Style	Npt
UPC	731413418563
Unit Count	1.0 Count
Warranty Description	Limited lifetime warranty

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