p0300 issues from hell

[big blue]

I did not use the stock boot covers because they didnt fit on the new msd wires. The plugs are E3 brand new. it only seems to do it during hard acceleration or cruzin on the highway the truck will go into a shutter and then ses light flashes and shows a code of p0300, i never have a problem with it while in town. Whats driving me insane is the fact that i had this exact problem with the 6 cyclinder motor so i upgrade the truck to a 42000 mile 5.3l and this problem is still present im lost on what to do. AS for feeling a mis during brake stall, 4 gear, tcc lockup Im not sure what these are and what to be looking for. Im greatful for the help! Thanks

[Frenchy]

Did you use the junk E3 plugs in the 4.3 too?

[big blue]

the truck has brand new plugs, wire, magnaflow cats, cold air intake, new o2 sensors, new masair flow sensor, new headers, new fuel pump, new injectors (because the originals had varnished closed from the old fuel while sitting in the junkyard), new pressure regulator. Whats wierd is that it doesnt always do it It some how can happen and then go away in the same drive cycle. AHHH!

[big blue]

no the 4.3 had accel and ac delco before I gave up and went to the v8. Are the e3s bad plugs?

[RUFFNECK]

E3's crappy plug. Stick with Iridiums. Either AC Delco or NGK's.

[pl4yboy]

Ngk tr55

[darnie1987]

E3's crappy plug. Stick with Iridiums. Either AC Delco or NGK's.

ya im running the e3's right now idk if there crap or what should i switch em as well???? or would it make any diff?

[RUFFNECK]

I had them in my 99 tahoe and they made it run bad. Loss of power, some random misfire, poor gas mileage.

[darnie1987]

I had them in my 99 tahoe and they made it run bad. Loss of power, some random misfire, poor gas mileage.

ill see if vatozone has some if not ill order some tomorrow....