xj650 compression test|Compression test

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compression test on my XJ650. hope this helps people out there and or at least entertains.I have done a compression test on my bike and the readings where 1. 130psi, 2. . I have done a compression test on my bike and the readings where 1. 130psi, 2. 115psi, 3. 130psi, and 4. 150psi. I have read that it should be 130 - 170 psi to run. I cleaned the . I borrowed a compression tester from O'Reilly Auto Parts to check my compression on my 82 XJ650. I didn't do this when I bought it a couple of years ago but .

Supporting this store through the link helps support this channel. This video shows how I checked the compression on a motorcycle, 4 cylinder engine, a Yamaha XJ650. I have .

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#1) You'll want a good, fully charged battery. If you ride every day or trickle charge, you're golden. You'll be cranking quite a bit and you don't want your juice to run out half way .steelescycles ebay contact [email protected] or call us at 303-781-5339 or toll free at 1 888 781 5339

compression test

Compression was a reasonable 9.2:1. Each cylinder had two valves, operated by two chain-driven overhead camshafts. The cam chain had an automatic tensioner, solving that problem, but the. Once you disassemble most compression testers (or leakdown or any other, for that matter), you'll find a 1/4" NPT connection. Tee that in with a certified gauge, apply pressure in a range using a regulator, and compare/adjust.

Insufficient compression pressure will result in performance loss and may indicate leaking valves or worn or damaged piston rings. Procedure: 1. Make sure the valve . About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . follow the test procedure in the info overload. it aalso has reasons as to why your compression is low read it The Information Overload Hour then do a third test when warm. remove the filter there is a little debate on stone cold vs warmed engine 650, 750 air-cooled engines: Minimum: 128 psi Standard: 156 psi Maximum: 171 psi

1982 XJ650 (SOLD) MiCarl, Aug 29, 2006 #5. mike. New Member. Messages: 14 Likes Received: 0 Trophy Points: 1 . compression test are very different things and are used to see if the rings are what is causing the compression loss (so saying don't worry about low compression without adding oil to the cylinder is a bit silly)Step 9. Repeat the process one-by-one for each cylinder. Our six cylinders gave us the following readings: 170, 170, 140, 190, 160, and 130. With that much variance between cylinders, we can tell something is wrong, and we're going . 1982 XJ650 Seca. mrdawson, Apr 30, 2016 #10. XJ550H Well-Known Member Premium Member. Messages: 13,199 Likes Received: 3,857 . and then re-test those cylinders. g) if the compression pressures RISE by a large amount after the infusion of oil, then this typically means that the pistons, piston rings, or cylinder walls are damaged or worn in . Compression test was done only kicking. Compression results were as follows, Right side: 10 kicks- 90psi 20-110 30-115 40-115 Left side: 10- 60 20- 90 30- 110 40- 112 50- 115 60- 115 In all honesty between my lack of expertise kick starting (sure learning quick) and my tired leg, I may be the reason it took longer to stop building pressure on .

Compression Ratio: 9.2:1: Induction: 4x 32mm Hitachi carburetors: Ignition : Transistorized : Starting: Electric: Max Power : 71 hp / 51.8 kW @ 9400 rpm . the Maxim may well be a genuine classic of the 1980s a bright idea that stood the test of time. Any corrections or more information on these motorcycles will be kindly appreciated. Contact .

Yamaha XJ 650 Maxim is produced in 1982. Engine is Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder,, displacement 653 cc / 39.8 cu-in , produces power 71 hp / 51.8 kW @ 9400 rpm and 57 Nm / 42 lb-ft @ 7500 rpm.

1981 Yamaha XJ650 Maxim Valve clearance/ carb issues. . So I took the carbs off again and I figured, while I've got the carbs off I could run a compression test (the engine was cold when I did this) and I was getting about.. 30psi across all of the cylinders dry, and about 45-50psi with a wet test. . Introduced in 1980, the XJ650 better known as the Yamaha Maxim 650 was a inline-four, shaft drive that became extremely popular. It was a high performance cruiser that continued the street bike excitement created by the Yamaha Specials.It could reach a top speed of 122 mph (196 km/h). Max torque was 42 lb-ft (57 Nm) @ 7500 RPM. Claimed horsepower . Compression Pressure Measurement Insufficient compression pressure will result in performance loss and may indicate leaking valves or worn or damaged piston rings. Procedure: 1. Make sure the valve clearance is correct. 2. Remove the headlight fuse from the fuse box. 3. Warm up the engine 2~3 minutes. Stop the engine. 4. Remove all the spark . I wanted to run a compression test just for the information not because anything was obviously wrong. I ran the test cold without warming the engine to operating temperature. Test #1 taking readings on the 3rd cycle: cylinder 1 = 100psi, 2 = 90, 3 = 100, 4 = 95, 5 = 100, 6 = 100. Test #2 was cranking until the max pressure was achieved.

Yamaha XJ 650 Midnight Maxim is produced in 1981. Engine is Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder,, displacement 653 cc / 39.8 cu-in , produces power 71 hp / 51.8 kW @ 9400 rpm and 57 Nm / 42 lb-ft @ 7500 rpm.

Retrospective: Yamaha XJ650RJ Seca 650: 1982

1-1981 XJ650. MN-Maxims, Aug 31, 2015 #6. k-moe Pie, Bacon, Bourbon. Moderator Premium Member. Messages: 19,641 Likes Received: 6,738 Trophy Points: 113 Location: . Might it be wise to try compression test again with a different meter? Could be the tool is reading too low. Doesn't explain the difference between cylinders, though.

Noobnoobnoob. Just completed a compression test on my '08. Ran the test twice to confirm the results. Ensured the battery was fully charged. Ensured that the tester was secured to the bike properly. Warmed up the bike before testing. Held the throttle open. Got a reading of 83psi. A car mechanic . When doing compression test all the plugs should be removed and battery fully charged and throttle wide open (unless carbs are removed) take your readings dry, put a little oil and then take a wet reading . Usually your reading will be slightly higher on the wet reading. Another thing is if readings are low ,you might try another compression . YAMAHA XJ650 TURBO. Engine: Turbocharged air-cooled inline four-cylinder DOHC two-valve four-stroke, 653cc, 63 x 52.4mm bore x stroke, 8.2:1 compression ratio, 4 x 30mm pressurized Mikuni CV carburettors, five .

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compression test will help tell if you have a gasket leak. I see you are new here is some good reading for you. this link will save your life SAFETY ALERT Drum rear brake bike owners please take a look Choosing Oil for a Wet Clutch Motorcycle The Information Overload Hour The Ultimate Relay, Switch, Sensor, and Diodes Guide IN THE CHURCH OF CLEAN

Looking at re-boring my 1980 UK XJ650 but I can't see anywhere that sells over size pistons with most internet sites saying 'no longer available'!!! Can anybody suggest where I can buy them, preferably UK or Europe but I will consider US as well. . Have you done a valve clearance check, and then a compression test before considering a rebore . Compression was a reasonable 9.2:1. Each cylinder had two valves, operated by two chain-driven overhead camshafts. The cam chain had an automatic tensioner, solving that problem, but the tappets .

The 1981 Yamaha XJ 650 and all other motorcycles made 1894-2024. Specifications. Pictures. Rating. Discussions. ), and we get . . . atmospheric pressure is 14.7 psi. In our idealized case, the cylinder psi on a compression test should be: (COMPRESSION RATIO) X 14.7 psi. If an idealized KLR650's compression ratio is 9:1, the compression test should yield 132.2 psi. HOWEVER, nothing is ideal! Normal aspiration never reaches 100 % volumetric efficiency in .

1981 XJ650 Maxim 51K. Stumplifter, May 24, 2017 #2. Lightcs1776 likes this. XJ550H Well-Known Member Premium Member. Messages: 13,199 Likes Received: 3,857 Trophy Points: . do a compression test on the motor the video DIY forum has a compression test video specs on ignition system can be found here ,also specs on charging system. The .Crossing the U.S. for the GX750’s 10,000 km test-ride A bold decision was made to test the GX750 right before its release with a 10,000 km test-ride across the U.S. in 1976. Excluding a single oil change, all five machines completed the journey without any maintenance or . You can do a leak down test to see where you are losing compression. 1993 Cherokee - 33" Duratracs - Dana 30/44 - Rear detroit - 4.88- Rear Disks - RE 4.5" Save Share Reply Quote Like. pizzaman3872. 3804 posts I have an 81 xj650 maxim. It has pods on it as well as a 4-1 exhaust. . I had shifting issues that have recently been resolved so I have had the bike out to test how its going. I have not synced the carbs as I need to fix the oring issue on the fuel supply between 2 of the carbs. . engine compression Last edited: Mar 20, 2017. 81 XJ 550 .

XJ650. CRANKCASE TORQUE SEQUENCE. UPPER CASE. LOWERCASE. 2. Separate the lower case from the engine. Use a soft rubber hammer to carefully separate the crankcase. K. Upper Crankcase. 1. . This can be checked using a valve spring compression rate gauge. Test each spring individually. Place it in the gauge and compress the spring first to the .

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xj650 compression test|Compression test

xj650 compression test|Compression test .

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