compression test 5.0i mercruiser|Merc 5.0l Lack of power no rpm over 3000rpm : wholesale Mercury MerCruiser Sterndrives & Engines. I am looking at a 2001 boat with a 5.0L EFI Mercruiser engine with 55 hours. Here are the actual compression readings:1: 2102: . Play Beto Nini Dj and discover followers on SoundCloud | Stream tracks, albums, playlists on desktop and mobile.
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mercruiser 5.0 alpha one compression test
Mercury MerCruiser Sterndrives & Engines. I am looking at a 2001 boat with a 5.0L EFI Mercruiser engine with 55 hours. Here are the actual compression readings:1: 2102: . Re: 5.0 Mercruiser compression readings. If you haven't already done so, replace the oil and filter, next I would proceed with the carb work and any other needed tune-up items, . I'm looking at buying a 24 foot 2004 deckboat with a Mercruiser 5.0 Bravo 3 (260 HP) that has 715 hours on it. The compression test results were as follows: 141, 149, 131, 135, .
Performing Compression Tests
hi, i bought 21 beachcraft recently, it has m/c alpha 1 inboard engine. i think i got a pretty deal. i did a compression test. here is the rezult, 150;140;120;120;120;125;120;125. is it .
What was the compression numbers. Maybe your client sucked up sand and the riser is full of sand or the block. Yea i seen that also the block completely full of sand all the . The best way to do a compression test and a leak-down test, demonstrated on my boat's Mercruiser (Chevy-block) engine. Good demonstration with lots of explanation and helpful tips..
That's why I urge a base reading written down, compression and vacuum test. Some run a vacuum gauge installed in the dash. Don't really want to beat a dead horse, what . A leakdown test is a FAR better indicator of the CYLINDER'S health (cylinder, piston, and rings). Just to clarify, it gives very little information on the condition of bearings. Dual Mercury Master Technician - for Mercury .
He did a compression test and all cylinders were OK but 2 and 4, which tested at 130 psi, but after he sprayed in some oil they tested normal. He wants to do a leak down test, but I'm not . ECM. Coil (in case it was weak spark) Cap and rotor. Installed a new battery as the starting battery on the port side was bad. Removed a valve cover to verify valves were . I have a 2002 5.0l mcm Serial #OM336918 471 hours Maintenance kept to the letter. It will not run over 3000rpm We have done the following. Compression test Good Fuel pressure test good Scanned with diacom no codes all parameters in the game new plugs cap and rotor Replaced the exhaust water shutters Cleaned all debris from exhaust. Did a compression test on my 5.7L 350 mercruiser and I had 175psi across all cylinders accept for one cylinder at 180psi. Is this acceptable? Reactions: javierlopez123. Reply. Upvote 0. split172 Member. Aug 3, 2015 531 .
Re: Compression Test - compression is to high FWIW - those numbers look similar to what I tested my last boat/engine after it had hydro-locked and there was still some water in the cylinders. As mentioned, maybe best to D-I-Y as far as getting the water out and doing some additional testing. I'm looking at a boat that has full inboard Mercruiser 350 / 260. (not I/O) I had the compression checked and all cylinders were between 145 and 150. I know the consistency is good just don't know how "good" the numbers are. What does a marine 350 start our life with? The motor is a 1987 with about 890 hours on the clock. Problem #1: 5.0l mercruiser engine not starting after winter, not sure what to check first. Background: 5.0l engine was summer and winterised by a mechanic no longer in business, but had several outings in 2019, none in 2020. . next I'd do a compression test on each cylinder. 5: if compression is good, spark is good and fuel in the tank is . To find out we compared 10 boats that we tested that had basically the same weight (3800 lbs./1727 kgs.), the same beam (8'6"/2.6 m) and the same deadrise (20 degrees). Five of the boats were powered by the 5.0L MPI MerCruiser engine and five were powered by the 350 MAG MerCruiser. All were sportboats.
I have a 2005 Monterey Montura 194FS with a 5.0 v8 mercruiser mpi. I just had a compression test done on the engine. I. Lawson, T.J. Expert. 98 Satisfied . What is your opinion of the following compression numbers for a Mercruiser 260-horsepower, 5.0L MPI Bravo III MCM stern. Yachtwork. MEC3 and RYA Yachtmaster Ocean. 10,909 Satisfied . Mercury MerCruiser Sterndrives & Engines . what should compression be on a 3.0L? Thread . Did you run it at all before you did the compression test? If not, how long was it setting, and have you put any oil in the cylinders. Seems high for a 3.0L. J. Jessfly1 Seaman Apprentice. Joined Jul 5, 2009Captain's reports and/or test numbers for this model are archived. . 5.0L MPI (260-hp) Brief Summary. Affordable, dependable and well-equipped, the 5.0L features the Thunderbolt V ignition system, which allows carbureted models to offer many of the computerized engine-management benefits of fuel injection. . Exclusive Mercury MerCruiser .It's 2006 MerCruiser 5.0 MPI serial # OW614502 with 425 hrs -- the boat is Chaparral 290 Signature with Twin 5.0 . The compression test was good, not great -- also on cold engine Keep in mind there was some fogging oil in the cylinders I .
Mike please scroll up to post 26, that's where I posted the compression test results. I may end up having the leak down test done, but I'm very skeptical that this will fail. Remember, the low 12 in. vacuum is "Steady" at idle, it does not fluctuate. I should also point out, it's 12 in Hg, not 12 psi. 12 in Hg is around 9 psi.
Strangely the Mercruiser service manual only has this spec for compression: Compression Pressure Minimum 100 psi with this note: "minimum recorded compression in any one cylinder should not be less than 70% of the highest recorded cylinder." So if that's really the spec we are well within that. So I don't think a leak down test will help us. I'm having trouble with my 2005 Mercruiser 5.0 MPI engine. when the boat came out of storage this year it would not start at all. I bought 2 new battery's and installed 8 new spark plug's. . I done compression test on all 8 cylinders . all 160psi. Installed new rotor button , cap and new coil. Changed the fuel filter ( cool fuel ) and checked .
View and Download MerCruiser 305 CID (5.0L) service manual online. 305 CID (5.0L) engine pdf manual download. Also for: 350 cid (5.7l), 5.0 mpi. . Test For Alcohol Content In Gasoline 1B-16 400 hours, whichever occurs first. . To make an engine operate, basic components - fuel, spark (ignition), and compression - are required. Mercury MerCruiser Sterndrives & Engines . Acceleration problem 5.0 Mercruiser. Thread starter . They do a compression test claim it needs a motor and its 5000 dollars. Unfortunately way too many boat owners are victimized by by boat shops that don't have good diagnostic techs. After all if a mechanic is good at diagnostic, He or She is not . Hello every one. I'm taking a boat on a sea trial this week and I have a few questions about the motor. It's a 94 mercruiser 3.0 lx with an alpha one gen 2. Before I buy the boat I wanted to do a sea trial and a compression test. Should I do the compression test after the sea trial or before. I also discovered there is water mixed with the oil sump (the engine oil is milky as obtain from the dip stick). Prior to this issue the compression reported 150-180 PSI which is good. Any feedback will be appreciated; I will do another compression test, however form my experiences with motor vehicles the signs are pointing to cracked head gasket.
New to iboats forums and had a question on compression for my 1994 donzi 21 5.7 mercruiser engine. Did compression test and results were 115, 120,110,115,119. but 1 cyclinder tested at only 90. Do i need to have my engine rebuilt? Seems like the engine runs fine but just worried because thought all cylinders should be +/- 10. Just had a compression test done on a mercruiser 350 5.7 tournament ski EFI. All cylinders checked out around 145 except for the last one #8 back starboard which was only at 35. The boat was sitting for three years. Any suggestions on alternative options then a repower or rebuild? Thanks
Mercruiser 5.0L EFI Compression Test
Prior work performed?Have spark means the cam is still turning, also you said the rockers move also. Verify that you are actually seeing gasoline in the fuel rail and not water.Remove the spark plugs to verify no water in the cylinders. Yes, you can crank a motor over with enough moisture to kill the spark plugs.Per Chris, a compression test is .
Mercruiser 5.0 has fuel, compression and spark but won't start
How to:What I did to Diagnosis & Repair= Blown head gasket 3.0L Mercruiser 4 cylinder . But I'm glad that other can learn from this info so they do not have to go through the hard way (so to say) compression test is the tell tail Great post and info. vegasphotoman Lieutenant. Joined Jul 13, 2009 Messages 1,411. Dec 5, 2009 2001 5.0 Mercruiser Alpha carbed in a 22' Stingray. Boat just wasn't running quite right the last two times i had it out. . I decided to do a compression test on the motor hoping it would give me some piece of mind. Well, now i am scared. Engine warmed up, throttle open. Here's what i got: #1-180 #2-120 #3-180 #4-170 #5-160 #6-140 The combination of water and low compression Tells me bad head gasket. The common issue you refere to is only if the Two center cylinder head gasket went bad. If 1, 7, 2, 8 cyl go then it can be only one. If you want to do a leakdown test that is ok also. There are many ways to check for water leaks You can do a smoke test on the water system
It came with a Mercruiser 5.0l MPI Serial OW673826 DOM Nov 2006. Needless to say our first boating experience was not a positive one. The dealer, who will remain nameless at this point, said the boat had been thoroughly inspected and was ready to go. . First up, do your own compression test. This engine is a standard Chevy small block .
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The Mercruiser 5.0 MPI is a widely popular marine engine found in the heart of countless boats worldwide. Designed and manufactured by Mercury Marine, this powerhouse engine boasts a proven track record of performance, reliability, and efficiency. However, like any engine, the Mercruiser 5.0 MPI can have its fair share of problems. In this blog . Top . 1993 Mercruiser 7.4L with 135hrs on it. Did a compression test to see what was what, and was surprised to find lowest at 110psi and the highest at 125psi with most at 115-120. These seem pretty low to me, but maybe that is normal for this engine. I was expecting to see around 150 or so.I have a 2005 Monterey Montura 194FS with a 5.0 v8 mercruiser mpi. I just had a compression test done on the engine. I. Lawson, T.J. Expert. 104 Satisfied Customers. I have an '03 Sea Ray 225 WE with a Mercruiser Alpha 1 260 horse power. My problem is .
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compression test 5.0i mercruiser|Merc 5.0l Lack of power no rpm over 3000rpm