- Oct 18, 2012
- 157
I left me truck heat up to normal and was curious so I set my hand under the tailpipe and it felt normal then a small puff and then normal and another puff, it just kept going like this continually, is this sign of a misfire or is this normal? I just got a new catalytic converter put on and don't want to ruin it with a misfire. Also note that the check engine light is not on.