Vehicle quit running codes po300 po301 po302 came up, won t start engine just turns over almost sounds like no compression not familiar with 4 cyldinders so it might just be me on sound. the codes ccame up 2000 miles ago and i cleaned spark plugs and that corrected problem could it just need new plugs or does it sound more serious . non start has me worried
PO300,301&302 indicate a misfire in 2 or more cylinders. Check your coil and spark plugs
Codes p 0300 is random misfires and codes p0301,2,3,4,5,6,7,8 are the cylinders that are misfiring
so un you statement the problem cylinders are 1 and 2
misfires are normally problem injectors and low fuel pressures so have the fuel pressure checked to make sure that the pump is running correctly, the pressure regulator is operating correctly ans the EVAP system is venting the tank correctly
use a couple of injector cleaner in the tank to clean the injectors
SOURCE: po302 code,po301,po300
usually a p0300 is a random missfire code due to a fuel problem probaly bad gas , use some in tank fuel treatment such as techron or lucas injector cleaner, after adding fuel disconnect negative terminal to batt, to clear codes and see what happens
SOURCE: 1990 Honda Civic will not start
Most of the handas have a pick up inside the distributor behind the rotor button take off the black cover inside the distributor and two screws hold it on with two wires on it. If that go's bad your car will not start i would start there
SOURCE: i got coes po604, po303, po300, and po301 for my
miss fire codes need to check tune-up, proper spark at all cylinders
SOURCE: 97 toy corolla DTC po300 po301 po401 po402
po300 random/multiple cylinder misfire detected po301 cylinder 1misfire detected po401egr flow insufficient po 402egr flow excessive
SOURCE: have po301 code 1 cylnder misfire whats the
anything from bad wire .plug or fuel delivery problem to cylinder 1pull plug and c if fouled -also test wire for break
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