# Problems on Startup - Car Stutters **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [April 11, 2007, 3:51pm UTC](https://forums.speedlife.net/t/problems-on-startup-car-stutters/27473 "2007-04-11T15:51:48Z")\ **Posts on this page:** 1\ **Showing post:** 17
**Author:** ![jetlounge](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jetlounge/32/4994_2.png) [@jetlounge](https://forums.speedlife.net/u/jetlounge)\ **Post date:** [April 23, 2007, 5:31pm UTC](https://forums.speedlife.net/t/problems-on-startup-car-stutters/27473/17 "2007-04-23T17:31:56Z")
ok so this past week as the weather warmed up I tried a few things. 1 - Swapped the EFI relay to ensure it wasn’t bad 2 - Dumped in some STP fuel system cleaner to kill any possible debris plugging the filter Thought I was in the clear but when it was warm on Saturday, the car choked on startup again. This time much worse then before. So next, I 3 - Checked the spark plugs. My Iridiums I was told we pregapped to .035" so I just dropped them in 2 months ago, but i pulled them out and measured them at about .030". This is smaller than the .032" the stock plugs call for. Long story longer, I extended the gap to .036"… Today was very warm…hit 80 degrees…car sitting outside for hours and NO problem at startup. Am I wishfully thinking that I solved my problem? Could 5/100th of an inch matter that much?? --- _[View the full topic](https://forums.speedlife.net/t/problems-on-startup-car-stutters/27473)._