[Michael W]

So a couple of days ago I was on a 45 mile drive home and about a half way home on the highway the engine cut out for a few seconds. Then it started back up and for the most part was normal the rest of the way home. When I got home I could hear it was idling oddly. I took it out yesterday on a short drive to the store and it stumbled a couple of times. It's hard to tell if its ignition or fuel or something else. I also noticed there is a leak in the seam of the surge tank for the coolant which explains why I have had to add some but I think that could be unrelated. I have a quick video of it at idle and you can hear it stumbling a bit, but when its being driven it behaves normally for a turbocharged slingshot. I am thinking about getting a scanner for it. Any recommended ones? Will it help in diagnosing this issue. I'm about to go dig into it and see if I can find anything obvious but if anyone has any previous experience like this I would love to hear about it. It's a 2018 SLR with 6400 miles on it if that matters.

Video here -> November 27, 2022

 

[Ericredsl]

Hmmm didn't hear anything.

 

[EjFord]

So a couple of days ago I was on a 45 mile drive home and about a half way home on the highway the engine cut out for a few seconds. Then it started back up and for the most part was normal the rest of the way home. When I got home I could hear it was idling oddly. I took it out yesterday on a short drive to the store and it stumbled a couple of times. It's hard to tell if its ignition or fuel or something else. I also noticed there is a leak in the seam of the surge tank for the coolant which explains why I have had to add some but I think that could be unrelated. I have a quick video of it at idle and you can hear it stumbling a bit, but when its being driven it behaves normally for a turbocharged slingshot. I am thinking about getting a scanner for it. Any recommended ones? Will it help in diagnosing this issue. I'm about to go dig into it and see if I can find anything obvious but if anyone has any previous experience like this I would love to hear about it. It's a 2018 SLR with 6400 miles on it if that matters.

Video here -> November 27, 2022

I would recomend a dose of "Sea Foam" I have 100,675+ miles on my 2016 and it runs like a top. A can of Sea Foam does 20 gal so I run a 1/2 can every month or two.

 

[Ericredsl]

Not to knock seafoam but I've never added anything to my 109,700 mile sling except stabil before storage. Read a voodoo review of sesfoam. I only used it on my 1987 Honda helix scooter one spring and it took a whole can to get it started. Not sure if it really did anything.

 

[Mario340]

So a couple of days ago I was on a 45 mile drive home and about a half way home on the highway the engine cut out for a few seconds. Then it started back up and for the most part was normal the rest of the way home. When I got home I could hear it was idling oddly. I took it out yesterday on a short drive to the store and it stumbled a couple of times. It's hard to tell if its ignition or fuel or something else. I also noticed there is a leak in the seam of the surge tank for the coolant which explains why I have had to add some but I think that could be unrelated. I have a quick video of it at idle and you can hear it stumbling a bit, but when its being driven it behaves normally for a turbocharged slingshot. I am thinking about getting a scanner for it. Any recommended ones? Will it help in diagnosing this issue. I'm about to go dig into it and see if I can find anything obvious but if anyone has any previous experience like this I would love to hear about it. It's a 2018 SLR with 6400 miles on it if that matters.

Video here -> November 27, 2022

Hello Michael
You should check all electrical connections to include possible spark-plug fault. It's a start

Mario

 

[taps]

Not to knock seafoam but I've never added anything to my 109,700 mile sling except stabil before storage. Read a voodoo review of sesfoam. I only used it on my 1987 Honda helix scooter one spring and it took a whole can to get it started. Not sure if it really did anything.

I had 3 different engines fail to run after stabil.

 

[Ericredsl]

Used stabil for decades with no issues.