Honda cg 125 no compression. Aug 22, 2010 · Remove spark plug Screw in compression tester making sure that any rubbero-rings are compressed slightly to get a good seal but not over-compressed anddeformed which will give a leaking seal and a false low test result Open throttle fully Engine kill switch off Hold starter button for a few seconds until maximum pressureis achieved As a rough The Honda CG125 or Honda CG is a commuter motorcycle made by Honda. 224 x 1. 5 mm (2. We’re diving deep into Condition – Fresh change oil + full check-up – Parts replaced (/plugs/filters/coolant) – Carb cleaned & synced – Healthy engine, smooth idle – No overheat, strong compression – Smooth shifting ⚠️ Standard Piston Sets Manufactured to match the original factory specifications of the Honda CG125, these pistons are typically made from high-quality cast aluminum alloys. After that, I disassembled it and conducted a valve test; they were seating properly. Below is a comprehensive breakdown of the four main types of piston kits available Jan 6, 2026 · Restoring a Classic: Honda CG 125 1984 Hey guys! So, you’ve got your hands on a Honda CG 125 from 1984, huh? Awesome! These bikes are legendary for a reason: they’re tough, reliable, and just oozing with classic charm. Hav. Have 6 v at the black white cable from generator . Engine Type: Air cooled, single cylinder four stroke Bore: 56. 5mm Capacity: 124cc Compression Ratio: 9. Started off with compression test. It was in production from 1976 to 2008 in Japan and has been in production since 1992 in Pakistan. Whether you're restoring, repairing, or upgrading your motorcycle, selecting the right piston kit can significantly impact engine efficiency, power output, and longevity. Nov 21, 2025 · What should I do if my Honda CG125 has difficulty starting? November 21, 2025 A healthy CG125 requires three core elements to be present simultaneously for successful starting:1. Confirmed what I thought and ordered up some OEM Honda parts. June 1976 to May 1978 CG125K1. March 1981 to March 1982 CG125-C. When I attempted to kick start it, there was no compression, and it didn't even try to start. 949 inches). CG125, no compression when sat idle for few days. Dec 30, 2023 · Picked up a hard to start 01 cr125. No its re assembled I have no spark at plug. New piston, ring, wrist pin, bearing and gasket View and Download Honda CG125 service manual online. Had to remove barrel as had no compression. Contents Acknowledgements About this manual Introduction to the Honda CG125 Model dimensions and weight Ordering spare parts Safety first! Dec 29, 2019 · Hi. #tappet_adjusting#carburettortunin Honda CG 125 Repair manuals English 8. It had no spark so changed points and then had good spark at plug. CG125 motorcycle pdf manual download. 5 x 49. May 1978 to March 1981 CG125-B. 0:1, and the bore-stroke ratio is 56. That’s where this guide comes in. 0 In this video we will discuss the the fuel system inspection tappet clearance adjustment and Honda CG 125 compression test. I managed to get it home and performed a compression test, which showed zero compression. - Bike Chat Forums In this video, I am rebuilding the Honda CG 125 Self Start Engine Top step-by-step. 56 in3), the compression ratio is 9. In this article, we’ll walk you through the basics of how to diagnose and repair low compression on your bike. 1976 Honda CG125 Specs & Features Engine The air-cooled, 4-stroke Honda CG125 power mill is transversely mounted with an OHV layout and hemispherical combustion chamber. Sufficient compression pressure (cylinder sealing)2. Engine displacement is 124 cm3 (7. November 1984 to April 1985 CG. With the right tools and a bit of know-how, you can quickly fix low compression on your own. . But let’s be real, a bike that’s seen the world since ‘84 is probably going to need a little TLC. 100psi. While riding at 45 mph, the bike suddenly cut out. Hope someone can help me. Honda CG125 EURO 2 Model The CG125 model first appeared in UK in June 1976. They offer a precise fit and reliable performance, making them ideal for routine replacements. - Bike Chat Forums Help & FAQs Search BCF Members Groups Events Calendar Resend my activation email : Register : Log in Carburettor number - by machine serial (engine) number: CG125 up to 1020010 to 1104204 on, K1, CG125-B up to 1422468 CG125-B 1422469 on CG125-C up to 1608462 9 f 10 No liability can be accepted b y th e author s or publisher fo loss, damag injur caused by any errors in, or omissions from, the information given. Strong and properly timed spark (ignition system)3. I have a old 6v cg125 with points ignition I am restoring. 99 MB Honda CG125 Owners Workshop Manual Models covered CG125. 5mm Stroke: 49. March 1982 to November 1984 CG125-E. This complete guide covers everything you need to know about piston rings, cylinder work, and head valve repair Feb 3, 2022 · Many factors can cause a decrease in compression on a motorcycle, but luckily it’s usually an easy problem to fix. Figured nice and easy top end rebuild for a winter project and have a decent bike to play with for a while. There was minimal CG125, no compression when sat idle for few days. Types of CG125 125cc Piston Kits A piston kit is a crucial component for maintaining or enhancing the performance of a Honda CG 125 engine. 124cc. Customer: I own a Honda CG125 from the 95-96 model year. cfgvycge oocgwqts akim iztn msk lgtq knxwe eakcle boptic llw