Odd Hesitation Issue
#1
Odd Hesitation Issue
For just over the past month my car has developed an issue where it will hesitate when giving it gas after a cold start. One the rpms settle after startup, when giving it light throttle, the engine will hesitate and sputter for a few seconds around 1200 rmp. If giving it heavier throttle, the engine will rev fine, but gives a nasty backfire when releasing the gas. What's driving me crazy is it will only do it once. After that initial hesitation/backfire the car will run fine, even if restarted. It idles fine and has to cool off for a few hours in order to replicate the issue. So far the plugs have been replaced and the maf and throttle body cleaned with no results. The only mods are a JLT CAI and tune (both of which I've had for years with no issue.) Any advice is appreciated. Thanks.
#4
6th Gear Member
I'd try that before you begin replacing things. I run Techron every 10k miles or oil change, whichever comes first. And when i DO suspect an issue, I'll run SeaFoam thru.
I'd also replace the fuel filter if that hasn't been done in the last 30k-40k miles.
I'd also replace the fuel filter if that hasn't been done in the last 30k-40k miles.
Last edited by Nuke; 05-18-2014 at 03:40 PM.
#5
I'll try running some cleaner through the next two tanks once I run the current one down. Other than what I can check by opening the hood I am really hoping to avoid any exploratory surgery. Any recommended cleaner? I was leaning towards Gumout again.