carlos8

hi guys like tittle say, my civic recently start to sputter when press the gas cold. Now it idle all day long perfect but a soon as press the gas chokes and die and if you play with the throttle slowly revs. When the choke and sputtering happen the wideband goes completely to lean.

I take off the charge pipe, put a stock fuel pump, injectors, Map sensor and a base map, send the ECU to check and the same thing. I already put the aftermarket equipment again with a few new things and nothing.

Bad gas or contaminated tank can cause this? I'm out of ideas!!

Muckman

iTrader: (2)

Check routine ignition maintenance like distributor cap & rotor, plugs, wires etc.

carlos8

This was my first suspect, I bought a new king dizzy and put OEM cap, rotor,
new plugs and the wires are like 6 months NGK HE64.

Also I put new walbro 255, new AEM FPR, fuel filter, main relay, ECT, TPS and bench test the injectors. I checked the time like 20 times and is dead spot. No CEL, Alternator charge is 14.05 at idle. Cleaned all the grounds and added a new one to be sure.

The compression is 200 across the board with 9.0:1

Really I'm lost