evinrude 70 hp compression test|70 HP Johnson compression test : importer I have a mid 80's 70 hp evinrude here. Compression is about 125 psi on each. As far as I have ever known (some may disagree, but I have always followed) once you get below . Kaitlyn Siragusa (aka Amouranth) is a costume designer, model, character entertainer, and entrepreneur based in Houston, TX. She began her cosplay journey as a self-taught costumer in 2010. Eventually she was discovered by the Houston Grand Opera and Houston Ballet and employed in their costuming departments. She started attending conventions .
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You did the compresion test and the results were OK, but they don't mean much other than they are close enough. Don't run it if it's bogging, this frequently means it's running lean from gunk in the carbs, running lean can cause damage. Clean the carbs and see if it improves.I have a mid 80's 70 hp evinrude here. Compression is about 125 psi on each. .I have a 2001 evinrude 70 hp 4 stroke. After a compression test it shows # 1 & 2 . I have a mid 80's 70 hp evinrude here. Compression is about 125 psi on each. As far as I have ever known (some may disagree, but I have always followed) once you get below .
Remove spark plugs.----Install compression tester in #1 and crank till gauge stops going up.-----Repeat with #2 and #3 cylinder.----Note---There is n need to open throttle plates .
Topic: 70HP Evinrude Compression: grosseile88: . Members, I am looking at a 1986 70 hp Evinrude. Motor looks and runs good. Compression is between 115 and 124 lbs. Highest being top cylinder and lowest being the bottom cylinder. Is this anything to be concerned with? . (the oil will help worn rings seal better during the test). If the top .
Johnson & Evinrude Outboards . Johnson 150 HP Compression . I have a new starter on order but I went to get a compression test and it tested low (70 psi on all cylinders). would the missing teeth on the starter have anything to do with lower compression? . Johnson 150 HP Compression OMC came out with the low compression (bathtub) heads . Johnson Evinrude Outboard Forum . Compression test 1990 Johnson 70 HP. Thread starter Sam2001; Start date Jul 22, 2017; S. Sam2001 New member. Jul 22, 2017 . . Compression test 1990 Johnson 70 HP. Thread starter Sam2001; Start date Jul 22, 2017; S. Sam2001 New member. Jul 22, 2017 #1 I'm reading 105 PSI across all 3 cylinders on my 1990 .
So I decided to take the boat for a test drive and the motor seemed to be running rough and would bog out when you have it some gas. So i took it home and did a compression check top-100 mid-90 bottom-100. . Ended up getting a Evinrude 70 parts motor with good compression. 130PSI in all three. It's just missing a few parts so im in the . I just tested the compression on a newly acquired 1998 Evinrude 115hp and I'm a little concerned. 80-83-82-84. I heard the loop charged motors test low but 80 still seems really low. Tested at WOT. The surging was worse and it was probably at 60% throttle now instead of close to wide open. It was also harder to get to take off without dying. I assumed since it had bee 3-4 months since I had ran it the carbs needed a good rebuild but wanted to check my compression numbers first. My readings were top cylinder 105, middle 90, and bottom 100.
Re: 1957 Evinrude 7.5 Compression Your compression is fine. I have a 1956 7.5 hp with compression in the 60's that runs great. You can't set the carb in a barrel. You can get it close enough, but you need to have the motor under load to set it right. I find my 50's OMC's like the high speed jet set around 1/2 - 3/4 turns. customer needed a 70 HP Evinrude, So I got one from my bone pile, Cleaned it up, Fixed the basic & common outboard problems that old outboards have & got i. Went to look at the motor, we started it up and it ran good on the ear muffs, but only for a minute. Brought a compression tester from Autozone and removed all spark plugs per compression test thread, opened throttle and checked each cylinder. I was surprised to see the compression numbers come in at 85, 87, and 87. Thought they would be over 100. How To Compression Test an Outboard Motor {TIGHTEN UP TUESDAY}Welcome back to Tighten Up Tuesday! This is a straight up step by step instruction video of ho.
Re: 15 hp Johnson Compression I used the same compression tester on my jet ski and it came up to spec compression. So I don't doubt its accuracy. The engine does run. It just doesn't have the power it had before. I have a 2001 evinrude 70 hp 4 stroke. After a compression test it shows # 1 & 2 cylinders are good 190 each. # 3 is @168 & 4 is @ 175. How bad is that for the last two? Can I just run it until I notice a performance problem & then look at rebuilding the 2 cylinders or pistons?
1957 evinrude 7.5 hp ( just checked compression) Thread starter merkdawg; Start . Did compression test with the type of tester that screws in the plug hole. Now I got about 25 mabe 30 psi on both cylinders. . racerone Gold Medal Contributor. Mar 20, 2011 #2 Re: 1957 evinrude 7.5 ( just checked compression) Likely the head gasket blown .
Re: 40 Hp Evinrude Compression test If the motor sat for a while shoot some pb blaster into the cylinders and wait a while before testing. See the top secret file about awakening a sleeping outboard at the top of the page. Stuck rings may give a bad compression reading, but can sometimes be unstuck without a major teardown.
Cylinder compression test of a low hour Johnson Evinrude 25 Hp Outboard Boat MotorAn outboard has good compression if the values are above (roughly) 70 psi a. The Boating Forum - Evinrude 70 hp 1990 Compression - Hello Guys Hope everyone is doing great. Im a noob in boats and recently bought an used one. I think needs repair. . Once job is done will test. Thanks for the advise I will keep you guys posted. More suggestions are welcome. Last edited by afuentes; 12-20-2015 at 12:37 PM. Reason .
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Re: 50 HP Evinrude compression 80 PSI compression is on the low side. Should be over 100 and closer to 120 - 135. Before getting to carried away, decarb the engine as was suggested. SeaFoam and Deep Creep are the same product only Deep Creep is the spray version. It can be found at most auto stores and farm stores that sell auto parts. I also checked another older early 70's V4 I have here and got 145/144/144/141, and a 1985 115 hp that reads 120/121/119/118. . 1985 Evinrude 90 HP Compression readings? All the numbers are pretty normal for each type/year OMC engine you have checked. They all are pretty healthy blocks, with solid readings. The 85 and 115 are exactly the same .
Before inserting the compression test adapter into the cylinder spark plug, make sure the O ring on the adapter is in place. I once ran a compression test with a missing o-ring and the results were pretty bad. I almost made a call to scrap or rebuild based on the compression readings I got. Once I corrected the problem I got much better numbers. Re: 1978 evinrude 70 hp fuel issue..please help sorry didn't see the model no. posted.1.compression test.2.spark test 3. fuel..post back with the results of the first 2 . Another problem with using starting fluid is that it'll ignite even with a very weak spark. It's This Old Outboard. The Evinrude 55 Hp Reed Valves Inspection. Compression Test. Put some gasket sealer on the intake gasket.Installed the Original Carb . Ok, I started a thread a little bit ago about my 1965 johnson 9.5 having a "cough" at low rpm. I had taken the previous owner's word that the compression was 120 on each cylinder. I checked it and it is more like 75-80 psi. Now, I have a 1973 9.5 evinrude (basically the same motor, right??) This one runs as well and has about 80 psi.
If you can, run the engine to clean out the oil, and test again. tashasdaddy Honorary Moderator Emeritus. Joined Nov 11, 2005 Messages 51,019. Jan 15, 2009 #3 Re: 30 HP Evinrude Compression Issues welcome to the forum, did you use a screw in tester, turn motor over 5 revolutions on each cylinder? S. . 30 HP Evinrude Compression Issues Thanks . I want to do a compression test on a 1981 Johnson 70 hp, (never done a compression test on anything) The Clymer manual I have says, do it with the engine warm, well that's the first problem, the engine won't start, so does it really make a difference whether its warm or cold? It also says. Re: 70 hp evinrude water in cylinders checked the head bolts, they are torqued(60 to 84 inch pounds doesnt seem like alot) compression is within three psi of 120 on all three cylinders. no i didnt check the head or the plates in the exhaust to see if they were true. i honestly thought they would be cracked when i took them apart and was surprised when i .
I bought the project boat and the 70 HP Evinrude had not been run for a least a year. The head was off the motor. The shop the previous owner had it at, said it needed rebuilt. . The cylinder didn t appear to be heavily damaged I installed the head and did a compression test all plugs out. My gauge top 135 mid 95 lower 135. The compression .
Evinrude 70hp ideal compression?
Compression test specs 1997 evinrude 70 hp . Ran a compression test on all three cylinders, got around 100 on all three and all three were within 10 of eachother. Is that acceptable? . I would care more about a leak down test than a plain compression test if .
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evinrude 70 hp compression test|70 HP Johnson compression test