so I get a code for random misfire, p0300. its a hard code, comes back a few miles after its cleared, or when the car is started. took it to the tuner and he said its not the misfire table tolerances, or hat ever (im no tuner), and he has the table maxed out, and the misfire code still comes. he mentioned that it could be an intake gasket leak? dont get why it would come on right after the cam swap? any insight to this issue? the car does have to get an inspection soon, andid like to not have this code.

 

it doesnt run weird, it made good power, and it has been fine, just a check engine light.

 

man diagnosing problems in a modded car with different cams specs is a different world, codes are tuned out and what not.

i always start off and make sure your getting fuel, air and spark. i knows its a random multiple misfire so check up stream (ex sensors, vacuum leaks etc) and make sure everything is working correctly.

if you want to check for a vacuum leak, you could use a vacuum gauge and see how many inches (hg) of vacuum you have. OR...you could have the car running and spray brake/carb cleaner everywhere there could be a vacuum leak. if the car stumbles or turns off while your spraying anywhere...bam unmeasured air going into the engine.

 

Ok. I have a vacuum gauge, can I temporarily hook it to the booster? I wasn't sure where to get vacuum from.

 

Common issue..
A Google will keep you reading for a bit.
http://www.bing.com/search?q=Aftermk...ZI&form=MOZSBR

 

Most of those tell
Me its something that can be tuned out. Tuner said its not the tune?

 

Of course the tuner said its not the tune...thats not saying it is the tune tho but if all other options have been addressed then why couldn't it be tune related