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Innova 3640 Professional Fuel Injection Pressure Tester

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343 ratings

| 36 answered questions

Amazon's Choice in Fuel Pressure Testers by INNOVA

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Brand	INNOVA
Color	Taiwan
Item Weight	0.5 Pounds
Item Dimensions LxWxH	8.25 x 1.5 x 12 inches

About this item

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Helps identify and diagnose low fuel pressure a faulty fuel pressure regulator leaking injector(s) fuel leaks and/or clogged fuel filters
Properly rated fuel hose and brass fittings make this tool a step above the rest in quality and longevity
Large easy-to-read 2" dial face with 0-100 PSI scale
Durable 16" gauge hose and 6-foot bleed-off hose with solid brass fittings
Includes Ford GM and Chrysler test adapters and a "Tee" adapter for import vehicles

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Product information

Style:Fuel Pressure Tester

Technical Details

Manufacturer

INNOVA

Brand

INNOVA

Model

3640

Item Weight

8 ounces

Product Dimensions

8.25 x 1.5 x 12 inches

Item model number

3640

Is Discontinued By Manufacturer

Yes

Manufacturer Part Number

3640

OEM Part Number

3640

Cover Included

FUEL INJECTION PRESSURE TESTER

Additional Information

ASIN

B000EVU8NY

Customer Reviews

343 ratings

4.6 out of 5 stars

Best Sellers Rank

#327,779 in Automotive (See Top 100 in Automotive)
#80 in Fuel Pressure Testers

Date First Available

April 28, 2005

Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Product description

Style:Fuel Pressure Tester

Equus 3640 Professional Fuel Injection Pressure Tester

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Customer Questions & Answers

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Customer reviews

5 star		76%
4 star		15%
3 star		6%
2 star		1%
1 star		1%

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Top reviews from the United States

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Thomas

This one is a keeper!

Reviewed in the United States on March 30, 2019

Style: Fuel Pressure TesterVerified Purchase

Thought I was facing a $700 plus bill to replace a fuel pressure regulator and/or fuel pump on a 5.7L Vortec with 253,000 miles on it. Vehicle idled smoothly, but did have an occasional strong hesitation. These two conditions are somewhat contradictory so I thought check the fuel pressure as the dealership originally proposed (and they wanted to replace all the injectors). Was I shocked when the turn "key on" consistently showed 63 psi and running 57 psi. With engine off it held the pressure over 55 psi for over 15 minutes, no vacuum leak here. Cleaned the throttle plate/body and immediately saw an improvement per the scanner of the throttle position. Replaced the MAP sensor, cleaned the Mass Air Flow and used two bottles of Chevron Techron fuel system cleaner and my Vortec started running like new. The moral here is for the price and the exceptional quality of the tool you just might save yourself a lot of money. For the price and the quality of the tool, if you are suspicious of a fuel pressure issue you can't go wrong with the Equus 3640.

8 people found this helpful

Helpful

W.S.

Almost 5 stars...

Reviewed in the United States on August 14, 2019

Style: Fuel Pressure TesterVerified Purchase

Overall this unit seems to be built very well. Nicer than the HF one I almost bought. Except for one thing! There's a small tack looking piece in the tip of the main hose that is supposed to push open the valve (or adapter valve) Well that piece is CRAP! Congratulations Equus, you saved 1/2 cent on that VERY important part. Barely got this thing to work after using some plyers to straighten it out. Also would have been nice to have a carry case. May return it, not sure yet.

7 people found this helpful

Helpful

ARE Dad

Good fuel pressure gauge, every DIY mechanic should have one

Reviewed in the United States on July 12, 2020

Style: Fuel Pressure TesterVerified Purchase

This is a good gauge with an easy to read dial. It connected to the GM fuel rail valve easily and without leaks. It helped me to pinpoint the no-start condition in my truck. I initially thought it was the fuel pump, but once I connected the gauge, I could see that it had good fuel pressure which did not drop off when the pump stopped running. I then tried to start it with the fuel rail at pressure (but the relay out so that the pump did not run). When the fuel pressure did not drop while trying to start the engine, I could tell that the injectors were not firing. I traced it down to a broken wire in the injector wiring harness. If I did not have this gauge, I would have unnecessarily bought a fuel pump and maybe a computer or a set of injectors.

Helpful

Ken Odom

Crap

Reviewed in the United States on June 23, 2018

Style: Vacuum / Carb TesterVerified Purchase

Gauge was way off after 2nd time using it. No way to calibrate it either that I could see. Total waste of money.

10 people found this helpful

Helpful

Brad Saltzman

Broke after three uses

Reviewed in the United States on June 16, 2019

Style: Fuel Pressure TesterVerified Purchase

I had high hopes for this pressure gauge however the third time I used it it broke. The pressure gauge was accurate but when I was using the bleeder valve to do a fuel pump volume test the valve decided to stick internally causing me to make a huge mess. Oh well, it was only $24 so I'm not too torn up about it but I still wouldn't necessarily recommend this to anyone.

2 people found this helpful

Helpful

Taylor

Good buy.

Reviewed in the United States on February 11, 2010

Style: Fuel Pressure TesterVerified Purchase

This product was a good buy. I had used the "Actron CP7803 Vacuum and Fuel Pressure Tester Kit", though it was a HORRIBLE buy and the product had broken on me. The plastic pieces had broken off within the hose provided as it was very difficult to remove the pieces. I cannot stress enough, do not ever buy a fuel pressure tester kit/gauge without a valve release, and especially a tester gauge that does both fuel pressure test and vacuum test. It will not live up to anything.

I highly regret making that mistake and could give myself a huge one about that mistake i made.

(This product review)As for this product, it is everything it says and then some. Some reviews say that the lens will fog if gas touches it, but i was careful to not allow any gas to touch it by taking heed from the over reviews.

The quality of this product is very good. The plastic T (tee) is slightly disappointing as it should be a quality metal instead of a plastic. It held up great though and was a durable plastic none the less. Make sure your fittings are very secure and tight when testing fuel pressure. I thought i had tightened the fittings on the hoses well enough but i was mistaken and had fuel squirt out on top of my engine and hood. Just a screwdriver quick fix, and the product performed excellent.

Great buy, would give it a 4.5 to 5/5 if it had a metal T, and a tougher feeling to the gauge.

16 people found this helpful

Helpful

Ahmed

good quality

Reviewed in the United States on October 8, 2018

Style: Fuel Pressure TesterVerified Purchase

I didn't use till now , but I felt comfort as this product has the ASE quality stamp on it's package , and why it's four not five because I wish it had a box instead of this silly plastic package , and also it comes with less fittings as I bought mine separate to make complete or semi perfect fuel pressure test kit.

3 people found this helpful

Helpful

James Augustyn

High quality gauge and parts

Reviewed in the United States on January 4, 2021

Style: Fuel Pressure TesterVerified Purchase

This is high quality testing tool, was impressed with the material. I used it on my Jeep first thing and it worked perfectly. As with all fuel pressure testers, don't forget to press the relief to let all the air out so your needle doesn't bounce around too much. Definitely recommend this and would buy again.

Helpful

Top reviews from other countries

Nathan

Excellent!

Reviewed in Canada on August 17, 2020

Style: Fuel Pressure TesterVerified Purchase

Exactly what I was looking for. It's accurate, and includes many attachments for various systems. Easy to setup. Wish it came with a small storage case. for all the accessories. It's just packaged in plastic. But, for the price you cannot go wrong. Thanks!

edmund rose moores

Good tool for the price

Reviewed in Canada on May 10, 2019

Style: Fuel Pressure TesterVerified Purchase

Very good product. Great value. Works as it should.

Bob Lindley

Great value!

Reviewed in Canada on February 3, 2020

Style: Fuel Pressure TesterVerified Purchase

Exactly what I wanted. Accurate and affordable!

NorthernDad

Worked on my older mercerdes

Reviewed in Canada on March 8, 2017

Style: Fuel Pressure TesterVerified Purchase

Worked perfect on my 2001 Mercedes with the stock connector. Took a gamble and it paid off, this worked really well. Haven't used it on anything else yet, but I'm happy with it so far.

One person found this helpful

Soundy

Works as advertised for my Jeep 2.5L

Reviewed in Canada on May 23, 2019

Style: Fuel Pressure TesterVerified Purchase

Not sure what more to say, it worked as it should, so I'm writing this part because it won't let me just leave five stars without adding a bunch of words.

See all reviews

Pages with related products. See and discover other items: fuel fitting, fuel injector test, fuel pressure, professional auto scan tools, innova code reader, Explore equus vacuum gauges for cars

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