Spark plug time for your Mercury outboard! Covers the 2.1L 75, 90, 115 and Pro XS 4 Stroke models
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- Опубликовано: 13 сен 2024
- ✩✩Links to the items I use in this video along with more info located below - check it! Purchasing your items from my links helps me do what I do and create more content - Your help is appreciated!✩✩
In this video I make a recommendation to change over to iridium plugs when it is time. Most major vehicle manufacturers switched to iridium over a decade ago because of the following:
- Super long life
- Very hard to foul
- Easy starting
- Can in most cases run a wider gap (goes with easy starts)
Nothing wrong at all with the factory V-power plugs other than you can do better and mostly forget about your plugs. Interesting that the master service manual mentions iridium plugs (speaking to not gapping them) but merc chose to cheap out.
Get the plugs I use in this video here! Great price, you need 4qty.
amzn.to/3Po0E9m
Factory plugs can be found here:
amzn.to/44TOXNl
Check out Castforkids.org - Volunteer as a boat captain and get kids out fishing that may not have the change to again!
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Links to all my 115 merc videos:
Oil Change
ruclips.net/video/EBDdHWnHKbc/видео.html
Lower Gear Oil Change
ruclips.net/video/R-uaUlyN8OM/видео.html
Spark Plugs
ruclips.net/video/SEEYDhyTl68/видео.html
Putting plug #4 boot back on was more difficult than getting plug #4 out. Great video, I used the NGK iridium .44 gap plugs on my Merc 115 Pro XS, well she how she runs spring 2022.
Yeah same problem, no idea if number 4 is attached correctly now that I took it off,
Can you tell me how you reached #4 to get the plug out? What a Bit@h!
Super informative video my friend thankyou so much !!!
Can you do a video on changing the water pump impeller?
Could you possibly do a short video on #4 plug removal? Lots of us struggling with it.
I was having the same issue. Removed all the nuts to remove the side cowling with no luck. Didnt want to force the issue and break something that would cost more than a spark plug. Here is what works for me, I use a Power Torque 2 1/2" 5/8 spark plug socket (O'reilly part# GM8250) with a swivel end along with a 6" extension and a Power Torque 3/8 drive universal joint (O'reilly part# GM8260) connected to ratchet. Once I break it lose I remove the ratchet and universal joint and remove it by hand. Installation use the 6" extension with the spark plug socket until hand tight then attached universal joint and ratchet or torque wrench to tighten. This is on a 150, may have to figure out the tool combo for your use if not a 150.
for the number 4 (bottom) plug, I found it easier to tilt/turn the motor so I'm not having to contort my hands/arms to get it started
I just took the plugs out on my 115 pro xs for some winterizing and those plugs from the factory were super loose. Not sure what torque spec they were at, but they definitely were not torqued to 20 foot pounds...
Yeah I think I could have taken them out with my bare hands, they were super loose also.
Great info! Thanks
Hey bruh, for us “visual learners” would you consider a video regarding the newer Mercury 75, 90 and 115hp spark plug change? Specifically the removal of the number-4 plug, which is the most difficult to remove and re-install…🤬 P.S. Love-your-videos… 🛥🔧
Thanks man! Wish I still had this boat to show you. I found it easy with just a wobble and few extensions. I cannot recall it being hard at all.
FYI, those iridium plugs are the cheapest at Walmart…$$$
How did you change the bottom spark plug? I have such a hard time fitting a socket in there to change it. Is there a trick to this one? Any help is greatly appreciated!!
Hey Cliff, I used a short extension and socket. Inserted it first, and then attached the wrench. Was not so bad.
The bottom plug is the hardest to get out and in, which extension is best for this. I am having a lot of trouble with this one.
So my mercury 150 pro XS 4 stroke calls for Ngk-zfr5f, would zfr5fix-e work for me as well? Its the same gap but wanted to ask u cause u definitely know more about them then I do lol😂 and would they be better for me as well?
I would go with a zfr5fix-11. Gap is the next standard size wider at .043. With the fine wire electrode compared to the wide nickel tip on your stock plug, this gap should prove to be just fine (I ran wider on my 115 proxs - never an issue).
The fix-e will also work but had double the resistance which is not needed. Seems the fix-e was designed for better noise suppression in a certain use case.
@@MR_Garage so I bought the -11 but I doubled checked my manual and it only recommends the .032 gap. Think the -11 .043 gap will still be just fine?
-11 is perfectly fine in this situation (.043) with an iridium plug. Send it!
@@MR_Garage thanks man. I appreciate your help
2013 90hp merc. 4 stroke chart states ngk LFR4A-E is there a iridium version? Can’t find anything on reference chart. Thanks
Can you advise how to remove the #4 plug? it's almost impossible to get to!!
Use a spark plug socket with short extension. Add a few more short extensions until you can reach the plug. Not that bad if you add extensions in sections.
I am unable to find these for my 75hp with .032 gap. , which is what the decal on the motor says the gap should be.
Running iridium, you do not need to run a .032 gap in this application. Do not try and change the gap, run them as is!
Hello. I am changing my plugs and wanted to see how your outboard is doing with the iridium plugs so far? Thinking to make the change to iridiums if there arent any issues thus far
I do not have this outboard anymore but zero doubts it is running flawless. You will not have issues. Nothing special about these motors and in automotive, most all manufactures switched to them mid 2000's.
@@MR_Garage how long did u run ur motor for with those plugs before selling?
Believe it had 30-40 hours on them at the time of sale. Been a while. Had a few hundred hours on them in my honda's.
What happen to know the mercury stock oil filter number by chance I’ve been looking for that and I’m not sure if the one the mechanic install on mine is the correct one and I am on able to actually find the one he installed anywhere online it is a mercury filter and if you can recommend a good website to order all of my parts
Hey Samuel, I have it listed in the links of the video description. Feel free to order through that link - helps us out!
I'm assuming these will work on a 2016 Mercury 4-stroke 90HP as well? just to clarify?
As long as it is the 2.1L, then yes
I installed the ZFR5FIX-11 with default 1.1mm gap into my Merc 150 4-stroke and noticed at my graphing speed (800-900 rpm) that my motor felt like it was missing and stuttering, but it ran fine beyond 900 rpm. Yesterday I switched back to new ZFR5F factory recommended plugs with .8mm gap and the 800-900 rpm issue is gone. Can a .3mm difference in gap really cause the issue that I experienced?
Spark blowout would never happen on these technically low performance 8v tractor motors. My only thought is, did you use a slide gapping tool on the iridium plugs? My guess would be that one had its tip fractured.
I bought the .044 plugs but they wasn’t set at that gap. I had to gap them open more I know you said leave them but is it normal to have to set the gap or do I need to put the gap back .
Maybe you bought the .032 ones by accident
Lol, really simplified version. Would be nice if you showed what a bitch it is to get #4 out and back in! I'd like to see if you dropped more f-bombs than I did...
#4 plug. Terrible design for access. Not a good design. Frustrating for doing mtce
Understood. It is a bit buried. I did not find it hard to take out though with proper tools and such.