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01-20-2023, 03:26 PM | #1 |
Not Yet Wild
Join Date: Jul 2021
Posts: 16
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EZGO Robin Engine Timing Off
I have a 2007 EZGO with a MCI 295 Robins. Had the motor rebuilt a few months ago. But it would never seem to run correctly after. When starting the cart up cold it would take longer than I expected to start and when it did start it would putter around for a good 250-300ft until actually taking off like it never had any power.
Tried 2 new carbs (both OEM), fuel pump (OEM), clutches (OEM), swapping a rear end with another good cart of mine, accel & throttle cable, and battery. Spark is good from both plugs and battery voltage is 14.6v. Also tried adjusting the carb and cables every which way and it would be better for a day but go right back the next day after the engine cooled down again. So we opened the engine up today and noticed the timing belt was off by a half notch-notch. Would it being off just a little bit like that affect this engine like it is? |
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01-20-2023, 05:41 PM | #2 | |
Vintage tech
Join Date: Sep 2009
Location: South
Posts: 3,216
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Re: EZGO Robin Engine Timing Off
Quote:
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01-21-2023, 09:16 AM | #3 |
Not Yet Wild
Join Date: Jul 2021
Posts: 16
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Re: EZGO Robin Engine Timing Off
Here is a picture of the bottom mark when the top is aligned
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01-21-2023, 09:18 AM | #4 |
Not Yet Wild
Join Date: Jul 2021
Posts: 16
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Re: EZGO Robin Engine Timing Off
Here is the bottom mark being aligned but, the top notch is off when it is
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01-21-2023, 09:56 AM | #5 |
British born Nincompoop
Join Date: Feb 2007
Location: United Kingdom
Posts: 2,463
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Re: EZGO Robin Engine Timing Off
I think the pictures fell off my screen as I can't see them?
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01-21-2023, 12:25 PM | #6 |
Not Yet Wild
Join Date: Jul 2021
Posts: 16
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Re: EZGO Robin Engine Timing Off
Here is a picture when the bottom notch is aligned
key switch alligned.jpg |
01-21-2023, 12:27 PM | #7 |
Not Yet Wild
Join Date: Jul 2021
Posts: 16
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Re: EZGO Robin Engine Timing Off
Here is picture when the bottom mark is not aligned, but the top is.
key switch not alligned.jpg |
01-21-2023, 01:31 PM | #8 |
Vintage tech
Join Date: Sep 2009
Location: South
Posts: 3,216
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Re: EZGO Robin Engine Timing Off
Its hard for me to tell. Here is mine that I have on my workbench. Its in time. If you think yours is out then check crank key good and also camshaft gear to make sure the camshaft dial pin area is good. You have to remove the bolt in cam gear to see .
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01-21-2023, 08:14 PM | #9 | |
Nincompoop village idiot
Join Date: Apr 2018
Location: Michigan
Posts: 9,690
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Re: EZGO Robin Engine Timing Off
Quote:
Try this. Slowly depress the gas pedal. Does the starter/gen engage and start spinning the engine before the carb butterfly begins to move? If so how much further do you have to press the pedal before the carb starts to open? Also if you remove the airbox with key off and depress the pedal, can you verify the carb opens all the way? It’s easy to route that carb cable incorrectly (and relatively difficult to route it correctly between the starter/gen and the engine) so that it runs straight up through that stupid pain in the butt square clip. If the cable binds going into that clip from the cable being routed funny it will cause problems. I can’t see the cam gear but I don’t think your timing belt is an issue. If it’s a half tooth off, it’s not off. A full tooth off would be easy to spot, but it wouldn’t clear up after a few hundred feet. Why was the engine rebuilt to begin with? Did you buy the cart like this? Did it smoke but run okay? Knock? Something else? And again are you 100% positive it is an OEM carb? |
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01-21-2023, 09:49 PM | #10 | |
Vintage tech
Join Date: Sep 2009
Location: South
Posts: 3,216
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Re: EZGO Robin Engine Timing Off
Quote:
I love the way that engine oils |
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