I have a 12A MFR PP, with a 48ida

Having issues when raising the fuel pressure above 3psi it starts to drip, Ive tried multiple float adjustments ect.

3.3 GB needle and seat, removed screen and machined the extra pump passage, the usual mods.

Looking for any insight or help thanks in advance..

 

either your needle is bad, your float is set worng, or you're fuel pressure gauge is worng and it's getting more pressure than it says. There can be no other cuases... I've heard of teh glass ball inlets not sealing well, and that they're best suited for race, abd not street. try and find a 3.0 needle.

 

I have a 3.0 i will try it and see how that goes.

Thanks for the reply.

 

Put the 3.0 back in and seems to have solved the problem, bummer the other one didn't work it was a bit pricey.

Thanks for the help.

 

Glad to hear it is fixed

Do you know what kind of power you are making?