Outboard engine bogging/sluggish at high RPM - Common cause

[@DIYwithMichaelBorders]

If interested in purchasing this product, visit our Amazon affiliate link below. I earn from qualifying purchases. Ignition coils: amzn.to/3OfWpxn RTV sealant: amzn.to/43cALOJ NGK spark plugs: amzn.to/3NFufdv Spark plug wires/boots: amzn.to/44dp7o7 Spark plug gap tool: amzn.to/3PLQH7i Wire cutters: amzn.to/3D6cnUm Dielectric grease: amzn.to/3PMzR8g ************** 1. Replace outboard Ignition Coils kzbin.info/www/bejne/n5OciWisr7VobK8 2. How to build your own custom logo skateboard kzbin.info/www/bejne/b3rWpayVact8f9k 3. How to mount your skateboard on the wall kzbin.info/www/bejne/mWa0dXaBj7N6fpI 4. De-winterize outboard boat engine (PART 1) kzbin.info/www/bejne/f5vdhKadrtWciqM

[@jamesanker5883]

You legend! Just pulled my coils and found 2 of the 3 cracked! 👌🏼👌🏼

[@DIYwithMichaelBorders]

@@jamesanker5883 We are honored to help however 👍👍 goes to you for making it a DIY project! 😎👍🧰

[@jonathansimms4016]

Huuuuuuge help!! I've replaced almost everthing else on my smaller mercury (mariner) but this did the trick.

[@DIYwithMichaelBorders]

Awesome, love when you get all the parts that haven’t failed yet replaced…only to fix faulty part at the end. Honestly, your outboard is much better off now with all the new parts. 😁👍 Let us know if you have any questions and hey if you’re into crypto trading, join our DIY ecosystem and become part of an exclusive group of DIYers. toolboxtoken.com Reach out to us any time! 🧰

[@bry40l]

My boat is running bad at idle. found that hard piece around the coil broken. Have ordered a new coil and my fingers are crossed.

[@DIYwithMichaelBorders]

@@bry40l Thanks for watching, removing the broken coil and installing new will do wonders. Awesome job making it a DIY project. 😎👍🧰

[@boondocksoverlandandoutdoors]

Have exact same issue, even have the same motor! Unfortunately I replaced x2 coils, wires, spark plugs, fuel filter and have fresh fuel…and still have same symptom.. when near WOT struggles to get onto high RPMs…messed with choke to see if it was needing fuel but made no difference…it would actually bog due to running rich with choke, I pulled carb off and didn’t notice anything clogged or out of ordinary. Went as far as pulling reeds off…they look fine I guess? Made out of metal…rubber seal looks good…not sure at this point?

[@DIYwithMichaelBorders]

Thanks for watching, sounds like you’ve been busy. Bummer to hear you’re still experiencing issues. The next likely cause is either contaminated fuel, or a carburetor that needs to be rebuilt or replaced all together. Looking forward to hearing back from you. Keep us posted. 👍

[@boondocksoverlandandoutdoors]

@@DIYwithMichaelBorders alrighty man..here’s the verdict: so I had previously done a lot of work to it with no remedy to symptom..I pulled reed block (located behind carburetor) (for those who may not know) the gaskets looked very worn/brittle and not sure if it was already cracked or it cracked when I pulled reed’s off to inspect, I couldn’t find the gaskets for it so I bought a paper gasket set from Advanced Auto and traced original gaskets, put everything back together took out to the lake to test and BAM! Problem fixed!! I highly suspect it had a vacuum leak due to brittle old gaskets at reed block/cover. Another good thing to note is I also replaced all fuel lines with automotive fuel hose, It previously had the silver fuel hose you typically find on Walmart fuel kits etc. I did inspect those hose’s prior to work since they are known for the interior plastic liner degrading and clogging. But just of peace of mind and durability ended up replacing all fuel lines with automotive grade hoses. Hope this helps someone 👍🏽

[@DIYwithMichaelBorders]

@@boondocksoverlandandoutdoors That’s outstanding, awesome job and we love reading follow ups like this. Very creative and got the job done. Now it’s time to enjoy the boat. 😁👍

[@shanevice7767]

Subscribed immediately, thanks so much man! Exactly what was wrong with mine.

[@DIYwithMichaelBorders]

@@shanevice7767 That means the world to us, thank you. We are very honored to hear that this was your cause. We subscribed to you as well. 😁👍🧰

[@GutsuMaxim]

i am having a similiar issue. don't know where to look anymore. My Mercury 90HP outboard 4 stroke at full throttle after 30 seconds starts jumping RPMs between 3k-4k and it just keeps shooting up and down non stop. Please help.

[@DIYwithMichaelBorders]

Thanks for watching, we appreciate you reaching out to us. Have you replaced the Ignition Coils? What parts have you recently replaced. Looking forward to hearing back from you. 🧰

[@BetaGod]

same problem here on a 90hp 4 stroke carburator mariner.. tried new coils without any result! Suggest? i lost around 1k rpm and 10knots

[@KrishnamurthyS-v7j]

Sir, 2010,mercury55hpengine, comparation125, 130but, notgoodworkmyengine. How do, dome

[@DIYwithMichaelBorders]

Thanks for watching, any update? Have you replaced spark plugs and wires?

[@206_FISHING]

I have a xr6 and will bog out during takeoff. I shut her off and she takes off fine but once gaining speed she starts bogging out again. Shop said it was fuel pump so I had that changed but still bog out

[@DIYwithMichaelBorders]

Good morning ☕️ any update? Have you replaced spark plugs and wires? If so, we recommend removing any dielectric grease from plugs and boots to see if that helps. Too much to electric grease and plugs will work against you, as it will degrade engine performance.

[@206_FISHING]

@@DIYwithMichaelBorders I am changing out spark plugs this weekend and going to check my coil packs I started off with changing fuel pump but that did not solve the issue.

[@DIYwithMichaelBorders]

@@206_FISHING Thanks for the reply, we will get this figured out together! 😎👍 That’s awesome you’re replacing the plugs this weekend, looking forward to hearing back from you. ☕️🧰

[@johnfatorich3494]

Tell the shop to give you a deal on the coils for giving you bad advice on the fuel pump.😡

[@206_FISHING]

@@johnfatorich3494 don't think they will but sure be nice if so.

[@CTRadventures]

I have a 1987 Johnson 150 V6 bro I can get to 40mph no problem but once I get there and continue to hammer it down, she boggs down and almost stalls unless I let up

[@CTRadventures]

Might have to give this a try

[@DIYwithMichaelBorders]

@@CTRadventures Thanks for watching and reaching out to us. Any update? It’s likely that replacing spark plugs, wires, and going the extra step and replacing Ignition Coils will improve the overall performance of your engine significantly. Keep us posted. 😁👍🧰

[@justinfreeman7942]

This video was extremely helpful.Thank you so much

[@DIYwithMichaelBorders]

Good morning ☕️ you are welcome. Please let us know if we can help answer any questions. We are sipping our ☕️ and answering any and all questions for the DIY community. 🧰

[@D2LocTv]

johnson evinrude v4 110 hesitates then accelerates normal speed I put new fuel pump, new gast tank , new coil packs new starter