jack rabbit55

hope i am in right area, i did a ls swap in my 1955 the motor came from a 06 Silverado, been for about 12 ,13 years now , i am lookin for my auto circuit beaker if i have one , i dont know that i do, i have looked everywhere. i am having trouble after i wash it it dont start it just cranks, and i only here the fuel pump for 1 sec not the normal time, after about 4 days its starts right up, i have check my 2 relays( 1 for fuel and 1 main ) , i dont know where to look now because its starting up. i was going to check the auto circuit beaker and see if it was bad, i was going to wash again and check it that way and some other checks once it dont start.
thanks for any info

the_merv

iTrader: (88)

Has that been a problem with that car for all 13 years?

jack rabbit55

only after i wash it since 2016 ,, its starting now just fine , i am taking it out today and see, hard to trust now, but it seems to only do it after i was it , even is i am very careful, i might wash it again just so i can try to find it

thanks

jack rabbit55

Went out for a test run and made it a mile and died, fuel pump doing the same thing. I’ll dig a little deeper. I may have to recruit me some help. Thanks guys I have a lot of testing to do

the_merv

iTrader: (88)

Fuel Pump wiring I run at minimum 14ga, that's the 12v and ground to it.

jack rabbit55

i can jump it out at the relay and make it run, still no start

jack rabbit55

its running now , dont know what the cause is or where to look

ls1nova71

iTrader: (4)

LS swap harnesses don't usually have circuit breakers in them, but I don't know what kind of harness you used. I would try checking all your grounds really good and go from there. It's most likely something simple.