Very Rough Idle

I've searched the forums and found some issues but wanted to get any fresh ideas. I feel pretty confidant that it's going to be ethanol gas as I have experienced these problems in the past with most of my small engines (lawnmower, 4 wheeler, chain saw, outboards, etc.) I for the most part only use ethanol free or add Sea Foam to the gas if not. Can't say that for the Spyder as I have filled up with ethanol in the past. We have been having "normal" weather in Southeast Louisiana this winter, 80 degrees and sun one day-Rainy and 19 degrees the next and plenty of humidity.
It ran perfect 2 weeks ago. Cranked it up last weekend and it was spitting, sputtering and dying at idle. Throttle up to around 2000 and runs like a sewing machine. No check engine light or any other codes that I'm aware of. I added some Sea Foam to the tank yesterday and ran it a little while. No changes yet.
And BTW, I love farmers but they need to grow corn to eat not burn. Just my opinion.
Thanks in advance!!

Jabbo

Put fresh gas in it (ethanol Free) and take it out for a spin.

Cruzr Joe

Are you positive it firing on all three cylinders?:bdh:Sounds like when you speed up the engine it goes away

IMHO that would be the last thing I would guess as to the issue here...... You may gotten a tank of BAD gas but the Ethanol wasn't it...... Think about it ...... 85 % of Spyders are forced to use it because they have no choice. I have yet to hear that it was identified as the cause. The V-twins as they get older have had issues with the VACUUM HOSES but I haven't heard of this with the 1330 engine....... I agree with FRESH GAS , but I don't think it MUST be Ethy free.........Mike :thumbup:

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Originally Posted by Jabbo

I've searched the forums and found some issues but wanted to get any fresh ideas. I feel pretty confidant that it's going to be ethanol gas as I have experienced these problems in the past with most of my small engines (lawnmower, 4 wheeler, chain saw, outboards, etc.) I for the most part only use ethanol free or add Sea Foam to the gas if not. Can't say that for the Spyder as I have filled up with ethanol in the past. We have been having "normal" weather in Southeast Louisiana this winter, 80 degrees and sun one day-Rainy and 19 degrees the next and plenty of humidity.
It ran perfect 2 weeks ago. Cranked it up last weekend and it was spitting, sputtering and dying at idle. Throttle up to around 2000 and runs like a sewing machine. No check engine light or any other codes that I'm aware of. I added some Sea Foam to the tank yesterday and ran it a little while. No changes yet.
And BTW, I love farmers but they need to grow corn to eat not burn. Just my opinion.
Thanks in advance!!

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Thanks Joe and Blue, I'll keep yall updated!!!

Mike...
:agree: there seems to be a manifold leak somewhere. Once you create more pressure it seals up and run fine..Let us know what you find..:thumbup:

I've heard there are problems with some vacuum lines

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Originally Posted by Dennis elliott

I've heard there are problems with some vacuum lines

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That's been the story with the 998s; we haven't heard that about the 1330s... :dontknow:

He's got a 2014 RT-L.