SKU: 44564225825

Diesel Engine Compression Test Kit

Sale price$34.16 Regular price$37.95
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Description

Diesel Engine Compression Test KitDiesel Engine Compression Tester Kit 16 Piece 16 Piece Diesel Engine Compression Testing Kit Used to Identify Worn Valves and Piston Rings Includes Adaptors for Most Diesel Engines Cars, Trucks and Tractors Easy to Read Dial Gives an Accurate Measurement of Individual Cylinder Pressures to a Maximum of 70 Bar FREE DELIVERY UK On this Product Kit Contents: 5 x Glow Plug Adaptor M10 x 1. 0 thread 83 91 102 113 119mm 2 x Glow Plug Adaptor M10 x 1. 25

Diesel Engine Compression Tester Kit - 16 Piece

  • 16-Piece Diesel Engine Compression Testing Kit
  • Used to Identify Worn Valves and Piston Rings
  • Includes Adaptors for Most Diesel Engines - Cars, Trucks and Tractors
  • Easy to Read Dial Gives an Accurate Measurement of Individual Cylinder Pressures to a Maximum of 70 Bar
  • FREE DELIVERY UK - On this Product


Kit Contents:

  • 5 x Glow Plug Adaptor M10 x 1.0 thread 83 / 91 / 102 / 113 / 119mm
  • 2 x Glow Plug Adaptor M10 x 1.25 thread - 64 / 135mm
  • 1 x Glow Plug Adaptor M12 x 1.25 thread - 47mm
  • 1 x Glow Plug Adaptor M22 x 1.5 thread - 118mm
  • 1 x Injector Adaptor M20 x 1.5 thread - 75mm
  • 1 x Injector Adaptor M24 x 2 thread - 63mm
  • 1 x Injector Adaptor M24 x 1.5 thread (88mm)
  • 1 x Injector Adaptor M22 x 1.5 thread (73mm)
  • 1 x Injector Adaptor M20 x 1.5 thread (75mm)
  • 1 x Screw Adaptor (160mm)
  • 1 x Bleed Valve
  •  Dial Gauge
  •  H Fitting




 

 

 

 

 

 

 






ACCURATE MEASUREMENT:

This all-rounder Diesel Engine Compression Test kit covers the vast majority of modern diesel engines fitted to most vehicles.  The 16 piece kit is used to identify worn valves and piston rings.  It includes adaptors for most diesel engines - cars, trucks and tractors, and the easy to read dial gives an accurate measurement of individual cylinder pressures up to a maximum of 70 Bar pressure. 


ENGINE COMPRESSION TESTING:

Engine compression should be checked when an engine is running roughly or is lacking power. Most manufacturers recommend a compression test be performed every time a tune-up is done as part of preventative maintenance.  Consult your vehicle owner's manual for tune-up intervals.


IDENTIFY BAD VALVES/ WORN PISTON RINGS:

By performing a compression test, internal engine malfunctions, such as bad valves, piston rings or excessive carbon buildup, can be detected before they cause irreparable damage.

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What is a Compression Test?

A compression test is a mechanical test carried out to assess the working condition of an engine.  It is one of the most frequently performed tests used to determine engine health.  It is essential that it be performed when the following symptoms present themselves: unexplained loss of power, rough idle, engine miss or a puffing noise in induction or exhaust.  It is also recommended that a test be performed after performing an engine tune up.


Quickly Identify Compression Issues:

The compression pressure values should be measured on all cylinders using the compression gauge.  The results should then be compared against eachother and against the manufacturer's specifications for that engine type.


Accurate Compression Measurement:

This procedure will provide a very accurate indication of current engine condition.  If the recorded cylinder pressure value is lower than the expected value indicated by the manufacturer then pressure is escaping out of the combustion chamber. 

What Causes Low Engine Compression?

WORN PISTON RINGS - A common cause of lost compression is the wearing of piston rings over time.   Wearing of rings can prevent a secure seal forming between the ring and cylinder.  Referred to as "Blow-By" the problem occurs when a fraction of the combusting air-fuel mixture, under high pressure, escapes past the pistons and travels along the cylinder walls to the crank case.  This escaped combustion represents lost power as it should have been pressing down against the piston and generating engine power.  It also causes an issue of oil contamination as the byproducts of combustion are entering the crank case and degenerating the engine oil.

CARBON DEPOSIT FORMATION ON INTAKE VALVES - The accumalation of carbon deposits on the valves or valve seats can negatively impact the ability of the valves to close correctly.  An insufficiently closed valve will lose air as it performs the compression stroke resulting in a sub-optimal compression ratio and a loss of engine power.   A knock on effect of this scenario is called "back firing".  This occurs when the air and fuel mixture bypasses the intake valve during combustion.  Also, note that the exhaust valves must be able to close securely to deliver an effective compression ratio.

TIMING CHAIN OR BELT HAS JUMPED - Valve timing has been disrupted. The chain or belt has become worn and loose and it has jumped over the teeth.

PHYSICAL DAMAGE TO THE ENGINE - This can be caused by a number of issues, for example - broken valves, damaged pistons, etc.

BURNED VALVE - The heat generated by combustion has damaged the face of the valve.

TROUBLE WITH THE VALVE - Often caused by adjustments resulting in insufficient valve clearance which prevents the valve from fully closing as designed.  Can also be caused by damage to valve parts, eg: the valve spring, retainer or seal.

RUPTURED HEAD GASKET - Simple, the head gasket has been ruptured.

VALVED SEAT BURNED - The heat caused during combustion has dmaged the cylinder head seat.

 

We have the best prices online on all diesel compression tester, compression tester diesel, and diesel compression test kits. Shop engine compression test cost UK today!



* images for illustrative purposes only

 

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Shipping Notes
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SKU: 44564225825

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4.1 ★★★★★
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Jennifer L Johnson
Houston, US
★★★★★ 5
Great for puppies- have purchased several times
Size: X-Small
I have purchased this toy for a couple of the puppies in my life and they always love it. It’s not noisy, it’s made for puppies to chew (so it’s not too hard), and it’s fun for them to carry around with the different keys and key ring. A little pricey, but it always lasts a very long time- longer than they are a puppy!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 15, 2025
E
Verified Purchase
Everyday Essentials Reviewer
Omaha, US
★★★★★ 5
Safe and Entertaining Chew Toy
Size: Medium
My dog absolutely loves this toy! She gets hours of chewing time out of it, and I feel so much better knowing the keys are made of a material that’s gentle on her teeth. Unlike harder toys that can chip teeth, this one is durable yet safe, and it keeps her happily entertained. Definitely a great choice for any dog that loves to chew.
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Reviewed in the United States on August 20, 2025
M
Verified Purchase
Milarah
Draper, US
★★★★★ 5
Best money spent on a safe puppy chew toy
Size: X-Small, Size: X-Small
One of the best chew toys you can buy for your puppy! This kept him occupied for quite a while and it is one of his favorites.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
J
Verified Purchase
Justmy2centsworth
Grantham, US
★★★★★ 4
Had a 6mo. old teething (English Bulldog) & this has entertained her for 9 mo.!
Size: Medium, Size: Medium
A chew toy lasting over 6 mo. is generally very good, for this breed & this brand! I kept it in her cage at night, so she wouldn't get board & start chewing on her paws. BC I felt it was a safe toy to use in this manner. "It was safe for my teething Bulldog." "Much, much better than other chew toys from this brand!" Others such as the Orange Pretzel they absolutely love! However, they have always splintered into very sharp edges of plastic, which cause the dogs mouth's to bleed (pokes their gums) & then NEED THROWN AWAY! This Key Chain Chew Toy was "really good" compared to other Nylabone brand chew toys, I have purchased! My girls mouth did not bleed from chewing on it:) "So, I am very pleased with this teething ring!" & would buy it again! Notice how the plastic splinters on the ends? Once the toy gets to his point I feel it is definitely time to be replaced! I would recommend this chew toy for a teething med. sized dog! The one I purchased was fairly large. & stayed together safely:) This is the only Nylabone Chew Toy I would ever, leave in a crate at night, thus far! Good Job Nylabone!
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Reviewed in the United States on July 5, 2022
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Verified Purchase
Kristin H.
Lexington, US
★★★★★ 5
Great teething aid
Size: Small
Puppy loves these. I’ve repurchased a couple of times for my teething pup.
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Reviewed in the United States on March 1, 2026

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