Honda GX160 Only Runs on Low RPM
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- Опубліковано 16 жов 2021
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Today we're working on a Grip-Rite GR55G10X wheelbarrow compressor, powered by a Honda GX160 engine.
After being fully serviced (engine and compressor oil, spark plug, air filter, carb clean and some fresh fuel) this engine would fire up on the 1st pull, but only run at low rpm.
Because every other issue has been eliminated by the service, I diagnose this issue as weak spark.
Weak spark can cause poor ignition of the air fuel mixture, in the combustion chamber.
We'll be removing, testing and replacing the spark plug cap (STENS 135-226).
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From my experience, the metal caps can get water/moisture inside them which causes corrosion, then leads to the increase in resistance.
I do know that the NGK ones use ceramic resistors inside, and similar to the STENS replacement caps, should have a resistance reading of under 5K ohms.
What bothers me is the official Honda GX160 service manual states a reading of 7.5k-12.5k ohms on the spark plug cap is acceptable. Yet all the new Honda plug caps I've ever tested (OEM NGK, STENS etc...) are all under 5k ohms.
I linked a similar video where a spark plug cap on another gx160 that tested at 10k ohms caused the engine to shut down, but only once it got hot.
I've even tested dirt bikes that had no spark, and found that the plug cap had so much resistance, it prevented current flow from the coil to the spark plug.
I have a Champion generator with a similar spark plug cap. I will ohm it out now, because it runs for a while and then shuts down. Ignition coil is good. Thanks for the help.
Once I learned about this issue, I always check now, as it's quick enough to pull the plug cap and test.
I've got a GX200 that idles and even can take half throttle under no load. Any throttle higher and it stalls. I thought carb so I disassembled, cleaned real good and reassembled. No change. I was ready to buy a new carb but thought I'd check UA-cam. So glad I did. I took a ohm reading on mine and it was 9000. Bought a Stens from Amazon and installed. Runs like brand new. Can't thank you enough for posting this fix. Liked and subscribed. Never would even come close to thinking this would be faulty.
Glad it helped, thanks for watching!
I would of never thought of something like that and I’ve been working on small engines for over 15 years. Great video and thanks.
Thanks for watching!
same lol i’ve been doing it for over 17 years and it makes sense
Thanks HEAPS for this! Cleaned carby out on gx200 twin impellor firepump due to low revs/ 725kpa water pressure head and NOW know I need to replace this part to get the revs up correctly!
This guy knows his stuff and gives a great lecture! Thank you.
Always happy and feel good to learn new things about small engines mechanics 🧰!! Thanks a lot !! 👍🏻☕️
Thanks for watching!
Good day I read all comments , boy this is a problem with these hondas. Thanks for video.
Thanks for watching!
My air compressor is a modified 8 gallon jenny 2 stage gas wheel barrow compressor that I have converted to a 30 gallon tank. Basically dropped the old deck plate on a newer 30 gallon. I like your videos. Help much needed. I have contacted local compressor repair company and no response. Compressor idled ran at full speed it only had a fuel leak out of the bowl. I purchased the unit for 300. I purchased a new carburetor replacement for a 10hp honda as PREVIOUS owner upgraded. I did have to use the old carburetor needle valve I think its called in the carburetor as I couldnt get to compressor to start with the valve that came with the replacement carb. I live in salt lake city utah. After changing to the old valve the engine starts and runs idles very well. Now i have my air compressor pretty well set up. I had my unit running idling and ran through its cycles and worked great. I did notice that I had worn out belts. I replaced the belts and also compressor pump oil and engine oil. I recently ran my air compressor and was working fine now my air compressor will not build air pressure and I started to get smoke out of the right side pump head where the air goes through cross over hose I want to call it that then ts and mates with the main hose that then hooks up to the tank. Being that I upgraded the tank I changed my original hose that hooks up to the tank. I did not change the T or other cross over hose. Now im wondering if since I did see excess carbon in the T fitting. I mean like made the interior dimensions of the 3/4" combination T into like a 3/8" fitting. I only didnt change it because I wanted to find the correct replacement so I wouldnt have to use Bushings. Im wondering if the air compressor is smoking due to excess carbon build up would that be a good assumption? Please message me back if possible... dunno if you can post this but my email is tylergoodrich1451@gmail.com
Great information on this Honda spark plug cap that a lot of viewers likely did not know about. I believe i just discussed this issue on Ken's small engine live stream recently. Keep up the good work son!
Thanks for watching!
Good job. I learned something new today. Thank you.
Great lesson, will remember to check that plug cap, a little multimeter can save many dollar
Good Info Jake sure appreciate ya sharing it
Great video Eliminator!
Great video. I’m going get a new cap tomorrow
Great video, thanks for sharing!
Hi very interesting a lot of people wouldn’t think of this, tbh I probably wouldn’t have I will from now on👍 I’d love one of those barrow compressors I haven’t seen them over here in the U.K. very good video great information thanks 🙂👍
Thanks for watching!
Great video and tip thank you.
Great video! Keeping that piece of info in my toolbox, lol. 👍👍
Thanks for watching!
Excellent video. Thanks very much. It also may mean that similar issue might happen because of faulty/weak spark plug, right.
Thanks so much! I will try this.
Good to know! Thanks.
Less ohm impedence is better than more on these Honda engine s great job there Young Man 😎 now we know what to do when this matter happens to the speak plug boot
Thanks for watching!
I have had a lot of these come in. They are like the old board game "mouse trap" Ask your Dad. LOL. I am amazed how many hours these get put on them.
These guys said they haven't changed the oil on this one in 5yrs! I said at the rate they run them, oil should be changed every 100hrs, that's every 2 weeks!
Great video
Thanks for watching!
Didn’t expect that
Great video , I would like to see what is inside the spark plug boot that causes this change . I always thought it was a solid conductor .
From my experience, the metal ones get water/moisture inside them which causes corrosion, then leads to the increase in resistance. I do know that the NGK ones use ceramic resistors inside, and similar to the STENS replacement caps, should have a resistance reading of under 5K ohms. What bugs me is the official Honda GX160 service manual states a reading of 7.5k-12.5k on the spark plug cap is acceptable. All the new ones I've ever tested are all under 5k, and anything over 8k usually has issues. I linked a similar video where another cap that tested at 10k ohms caused the engine to shut down once it got hot.
Just tested my cap on a GX120 mounted on a core aerator. Problem Im having was it would constantly die at any rpm other than idle. Took apart the carb, and cleaned it with no change. I was almost ready to just get a new engine until I came across this. I just tested my cap and it’s reading 12500ohms. Got a new stents replacement cap on order. Hopefully it solves the mystery. Thank you in advance if it does
Thank you so much!!! May Jesus bless yoy
Does it matter that your multimeter cable is touching the table during your testing....not sure if if the table would cause a faulting reading....kinda curious...
I have a Honda GX160 that starts with a starter and it runs, then it randomly shuts off but it starts right back up. If I unplug the cut off Wire to the coil it'll run and not stop. But it won't shut off unless you put The Wire back together like sensing it's low in oil, but it's not low in oil. Should I change oil???
checked one it was 9K bought a brand new OEM honda one it was also 9k? does this mean its bad?
What brand of shades are those?
Haaaa. I thought you said the "spark plug GAP".
now it makes sense
Noice! Thanks
What's the purpose of having resistance in the connector in addition to a resistor plug? Personally I use a non resistor plug whenever I can.
To limit/reduce RF interference.
Thanks
My pressure washer honda engine got oíl passed to exhaust bc was storage not properly level. what can I do to clean up
Brake cleaner maybe to dilute it, then run it to burn it off. Then change the spark plug.
Do you have a video on how to drill out a pilot jet?
Yes: ua-cam.com/video/Z6F38bSxSp4/v-deo.html
Hi what causes the engine to make a slight popping sound like it’s missing when it runs. Do you have a video on the gx160 carb adjustments also be nice to have a video on proper idle rpm and max rpm.
@@THOMASDRELICH likely the distribution tube under the main jet has some crap in it
@@EliminatorPerformance I’ll admit it’s a cheap Amazon aftermarket new carb. Even doesn’t on a new out of the box predator 212 engine while breaking it in
I meant it even does it on a new out of the box predator engine
Tried this on gx 200 only revving with choke on. Btw this is being run on a mini bike so different throttle setup. However I’m getting a reading of 9.75 resistance so I think I have same problem.
Turns out this was not my problem. Engine runs fine with 9 or 10 ohms resistance. Try cleaning your jets that fixed it for me
I just checked the 3 I keep and all of them are at 5 k also
Most of the ones I check on customers units are around 6/8
Anything at or near 10k I've found to give the engine issues once they heat up.
You are life safer brother
How about only high idle
It's very difficult problem ohh
We traced it down to a fuel supply issue at the source!
Thanks for this video, I believe this may be the exact cause for my sudden issue on my little wonder push blower with a Honda GX 270, it tries to run but just can’t build momentum to stay running then just acts like it runs out of breath so to speak…! It like tries to keep going for like 5 or 6 seconds and just comes to a stop … !
Most people replace the coil with China junk if low voltage
Really they need boot changed every year or two I think
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