boricua74rx7

i have a 82 rx7, half bridge ported 13b,with the after market intake a 650 holley double pumper MSD coils, 82stock ignition the car runs fine but when it get to 6000,6500 it misses.any suggestions on how to fix this?

Jimbo II

Yeh plugs, clean them? Mine was missing at about 7500 but went sweet again at about 9000. Then got MSD, 10mm leads for a beefy spark and since then its sweet

RXnos1200

iTrader: (24)

missing at 6500 rpm? you mean hesitation or break up? What fuel pump are you running and what do you have the psi set to? Make sure your floats are set at the right height. I think maybe you are running out of fuel at top end. Does it do it in 3rd gear? Does it do it in 1st and 2nd gear? need more info.

Kentetsu

Could be a timing issue...

RXnos1200

iTrader: (24)

missing like detonating? ^^^^^^^^^ got to look over everything

djessence

Did the OP ever get help cuz its an old thread (like a month)


for the other guy.......try the second gen section (86-91 cars)

boricua74rx7

i got it fixed,my jets were to small.I now have 65 for low and 67 for high and fuel pomp at 7psi.

chico708

no luck with starting the car