[Camaro820]

ok so i bought a crate engine a little over a year ago and ive been driving it around since. i noticed that i was running WAY too rich and decided to rejet the carb one size leaner on the primaries. it still felt like i was getting too much fuel into the carb and to make sure i put a pressure gauge on the thing and i was getting roughly 6.5-8psi. the manuel for the carb said not too exceed 6.5psi. i then decided to install a regulator. it's definitely not running rich but sometimes falls on its face in the low rpm range. now i was wondering, since i installed that regulator, do i rejet the carb to how it was?

[bigdog7373]

Do whatever makes it run the best.

[pepi]

Originally Posted by Camaro820

sometimes falls on its face in the low rpm range. now i was wondering, since i installed that regulator, do i rejet the carb to how it was?

You say low rpm range as in a corner, quick stop? check the float adjustment. If the rejet cleaned up the rich condition I'd leave that alone for now and watch the plugs for a bit.

[cool rockin daddy]

You would be wise to get a tuning book that deals with your make of carb so you can dial it in. It would be money well spent.

[Camaro820]

turns out, it was the regulator that failed and wasnt letting gas get to the carb. and when i checked the part number on the fuel pump, it was a 8psi pump. carb only requires no more than 6.5. so i ended up buying the pump that compliments the carb and now she runs great. im still new at this stuff, so a tuning book is a great idea. i didnt even know they had tuning books but i will look into one. thanks guys!

[cool rockin daddy]

You won't regret it.