Rough And Hesitent Idle
#3
Noticed mine idling rougher then usual today. Couple of times heard a slight popping sound like it was getting ready to kill it. This is the weirdest engine i have ever encountered. Some days it acts sluggish and other days it sits you back in your sit like it doesn't want to sit still. Run it hard and pull it in the garage and you can smell how hot it is. I hope its all normal.
#5
Sold on Rotaries!
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I think the general consensus on this board is that the idle can be a little shaky at start-up, especially in colder conditions because it is set-up to run "rich" to prevent flooding. But once the car is warmed-up, your idle should smooth out pretty good. There should be a little vibration in your shift ****, but that is normal. But the engine itself should not be vibrating or hesitating once warm. If it does, it could indicate you have an issue with your plugs. You also want to let the car idle for 10-15 seconds before you take off.
Anyhow, I think the best way to avoid any of these issues is to always insure that you run your car until it is very warm before you turn it off (ie. no 5-min trips, etc.). It's worked out great for me. I even had my car sit for multiple weeks due to winter and I am still able to get the car going with virtually no issues at start-up.
Anyhow, I think the best way to avoid any of these issues is to always insure that you run your car until it is very warm before you turn it off (ie. no 5-min trips, etc.). It's worked out great for me. I even had my car sit for multiple weeks due to winter and I am still able to get the car going with virtually no issues at start-up.
#7
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The vibration i had can be felt even though after warming up and the vibration seems to come from the engine though. when you guys talked about the plugs, what happens to it?
oh yeah forgot about it needs a long crank to start, sometimes it starts like a beaut.
oh yeah forgot about it needs a long crank to start, sometimes it starts like a beaut.
#8
Bummed, but bring on OU!
I've had people ride with me claim that the idle is rough. But I've grown use to the...pip,pop....pip,pip...pop,pip,pop of the renesis. After 35000miles of this with no issues, I think it's normal :p . I don't know if this is what you're getting, but you may be used to the idle on other cars.
#9
Lawyer in training :)
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Sean--What octane gasoline are you using? Your culprit may be lower octane fuel, which will certainly give you rough idle. Switch to 93 or 91 and you'll notice the difference.
#10
Registered
Originally Posted by boonyloh
The vibration i had can be felt even though after warming up and the vibration seems to come from the engine though. when you guys talked about the plugs, what happens to it?
oh yeah forgot about it needs a long crank to start, sometimes it starts like a beaut.
oh yeah forgot about it needs a long crank to start, sometimes it starts like a beaut.
Therefore, in that case, there is inadequate spark to ignite the vaporized fuel. To complicate matters, as the engine is cranked over and over in attempting to start the car, the combustion chamber becomes flooded with raw fuel which can be too rich to ignite even if there was a spark.
Spark plug fouling is exacerbated by frequent cold start, short distance driving resulting in the engine failing to reach a temperature where the carbon is burned off. The solution is generally to remove the plugs and clean or replace them with new plugs. However, sometimes if you can get the car started somehow, a session of very spirited high-rev driving may actually burn off the carbon and at least partially restore the plugs to good working order. In fact, a little spirited driving once in awhile could be considered preventive medicine and just what the doctor ordered. :D
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