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Gas EZGO Gas EZGO Marathon, Medalist, TXT and RXV. |
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02-20-2023, 08:16 PM | #1 |
Not Yet Wild
Join Date: Aug 2020
Posts: 3
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Broken Valve Studs On 3 Newer Carts
I have had THREE ezgo kawasaki engines that had the intake valve stud break this week. We have about 30-something of these carts from 2017-2022.
All of these carts are adjusted to do 24-25 MPH for a few years without engine failure. We purchased 9 of the 2022's in the last few months. The 3 carts that are broken now have 5, 10 & 55 hrs. Besides a bad run of studs or the material can you think of another reason? |
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02-20-2023, 08:18 PM | #2 |
Nincompoop village idiot
Join Date: Apr 2018
Location: Michigan
Posts: 9,625
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Re: Broken Valve Studs On 3 Newer Carts
24-25mph on stock size tires? Seems like an awful lot
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02-20-2023, 08:40 PM | #3 |
Not Yet Wild
Join Date: Aug 2020
Posts: 3
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Re: Broken Valve Studs On 3 Newer Carts
23" tires
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02-21-2023, 05:16 AM | #4 |
Not Yet Wild
Join Date: Mar 2014
Posts: 52
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Re: Broken Valve Studs On 3 Newer Carts
Wonder if it was a valve lash adjustment issue at the factory. Might want to check some of the other carts to see if set properly.
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03-18-2023, 08:45 AM | #5 |
Gone Wild
Join Date: Apr 2013
Location: Deep Run, NC
Posts: 2,535
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Re: Broken Valve Studs On 3 Newer Carts
I'm learning on the gas carts myself, but sounds like you are pushing it a little too hard. Do you need the speed enough to breaking motors?
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03-18-2023, 10:29 AM | #6 |
Gone Wild
Join Date: Jun 2011
Location: Northern Indiana
Posts: 2,813
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Re: Broken Valve Studs On 3 Newer Carts
I had one several years ago: 2012 TXT 6 seater with the Kawasaki 400 that came in with a broken intake valve stud. Similar to your situation it was lifted with 23" tires and set to go much faster than stock. For the hundreds of those I've had come through the shop (FJ400's) I've only had that one, so far, that's broken that way. While it is always possible there was a defective batch of parts, I would agree with prosa69 that it's probably worth checking valve lash on some of the others you bought more recently.
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03-27-2023, 08:02 PM | #7 |
Resident Curmudgeon
Join Date: Oct 2011
Posts: 1,276
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Re: Broken Valve Studs On 3 Newer Carts
The only time I've broken valve studs or seen them was when I or someone else (before reading the proper procedure in the service manual) tried to adjust them the wrong way, by tightening the stud nut without first loosening the hidden allen screw in the middle of the nut first.
How did you get them to go 24MPH? there's a in-built rev limiter inside the coils that cuts ignition after reaching 19MPH! It's not something you can bypass like on a club car. |
03-28-2023, 06:30 AM | #8 | |
Gone Wild
Join Date: Jun 2011
Location: Northern Indiana
Posts: 2,813
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Re: Broken Valve Studs On 3 Newer Carts
Quote:
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