# Compression Tester for Petrol Engines Jonnesway AR020017

**URL:** https://aio.lv/en/product--jonnesway-ar020017--11738623
**Data updated:** 2026-03-08 13:41 (EET)
**Category:** Miscellaneous repair tools
**Manufacturer:** Jonnesway
**Manufacturer code:** AR020017
**EAN:** 4719152332407
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 41.99 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 34.70 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--jonnesway-ar020017--11738623

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

Jonnesway AR020017 is a compression tester designed for petrol (gasoline) engine cylinders. It measures cylinder compression pressure to help diagnose engine health, worn rings, valves or head gasket leaks. Portable and suitable for workshop or roadside diagnostics, it is used by mechanics and DIY enthusiasts to verify compression values and compare cylinder performance.

## Long description

Jonnesway AR020017 is a compression tester designed for petrol (gasoline) engine cylinders. It provides a simple means to measure cylinder compression pressure, enabling diagnosis of engine health and identification of issues such as worn piston rings, leaking valves or head gasket failures. The tool is portable and suitable for both workshop and roadside diagnostics, offering mechanics and DIY enthusiasts a reliable way to verify compression values and compare performance between cylinders.
Advantages
The Jonnesway compression tester offers quick, direct measurement of cylinder pressure with a compact, handheld design that is easy to carry and store. Its connection fittings and pressure gauge are intended for repeated use in routine checks, allowing users to identify low-compression cylinders and diagnose related faults without disassembling the engine. The device is compatible with typical petrol engine spark plug threads and is useful for comparing readings across multiple cylinders to detect uneven wear or sealing problems.
Suitable for
Inspection of petrol engine cylinder compression in passenger cars and light commercial vehicles
Routine diagnostic checks in workshops and mobile service operations
Pre-purchase vehicle inspections and troubleshooting of starting or power loss issues
Hobbyist and DIY engine maintenance and comparative cylinder testing
Key specifications
Designed for use with petrol (gasoline) engine cylinders
Handheld, portable tester suitable for workshop and roadside use
Mechanical pressure gauge for direct reading of compression values
Fittings compatible with common spark plug thread sizes for petrol engines
Durable construction intended for repeated diagnostic use
How to use
Perform testing with the engine off and the ignition disabled. Remove the spark plug from the cylinder to be tested, attach the tester fitting securely into the spark plug hole, and crank the engine several revolutions while observing the pressure gauge. Record the peak compression value and repeat the procedure for each cylinder, ensuring identical starting conditions such as throttle position and battery charge. Compare readings between cylinders and against manufacturer specifications to identify cylinders with abnormally low compression.
Usage recommendations
Take safety precautions: disable the ignition system to prevent accidental engine start and follow vehicle manufacturer guidance. Warm the engine to normal operating temperature before testing for more representative readings. If a cylinder shows low compression, perform a wet test by adding a small amount of oil into the cylinder to distinguish between worn rings and valve or head gasket leaks.

## FAQ

### How much does the Compression Tester Jonnesway AR020017 cost, and is it available for purchase?

The price is 41.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 06.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Jonnesway products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Jonnesway service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11738623/67117858_large.webp