# Leaky injector?

**URL:** <https://forums.speedlife.net/t/leaky-injector/201152>\
**Category:** PittSpeed Automotive\
**Created:** [December 19, 2008, 7:36am UTC](https://forums.speedlife.net/t/leaky-injector/201152 "2008-12-19T07:36:48Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![imported\_Sleeper](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/imported_sleeper/32/5939_2.png) [@imported\_Sleeper](https://forums.speedlife.net/u/imported_Sleeper)\
**Post date:** [December 21, 2008, 7:28pm UTC](https://forums.speedlife.net/t/leaky-injector/201152/5 "2008-12-21T19:28:07Z")

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> [@wff wtb wtt ricer fartcan](https://forums.speedlife.net/t/wff-wtb-wtt-ricer-fartcan/39128/11):
>
> bad vac line could cause it but you should set a check engine light first. unmetered air entering is going to be compensated by the pcm adding fuel, when the fuel trim stategy reaches it’s limit it’s going to set a lean code.
> 
> if you can scan check your long term fuel trim at idle, if it’s high positive it’s possible you have a leak
> 
> have you changed out the PCV? atleast spray it out with some carb cleaner

bad vac line will not set off a code on the 4.0’s, these motors are more forgiving than anything i have ever worked on before SES wise. Havenet scanned for LTFT yet but i have see bit and didnt look out of the norm…

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