blackjack232

So driving back to my buds place my car started ti sound like a subie. And the cel started flashing. . P0300 code. It might be wet coils. Hoping its juat plugs. It was raining today too.

Please help me fix my car

Spawne32

iTrader: (1)

just p0300?

DSmastery

iTrader: (5)

check the spark plugs and u had a misfire if it flashed

random misfire - p0300

if a spark plug is loose or comes out with the boot check the threads arent blown

ECaulk

iTrader: (6)

LNF/LSJ/L61/LE5/LAP?

Miles, mods?

But being random misfire code I'd say plugs need replaced.

Murdered SS

iTrader: (4)

This happens to my car also if I sit at idle for a while. Then I drive around for awhile and it goes away. I've changed plug and still the same I think mine is maybe new coil packs. Good luck with your car hope you get it fixed.

Spawne32

iTrader: (1)

weak coils are very susceptible to heatsoak, ive had several car's that only suffered with misfires on the hottest of summer days, but usually this was on single coil car's not COP equipped car's.

Murdered SS

iTrader: (4)

Yea especially here in Las Vegas it get really hot lol

Spawne32

iTrader: (1)

lol i had a car that was fine all year round, if the temp went above 95 degrees, after 10 minutes of driving it would start sputtering and get progressively worse until it would barely accelerate from how bad the misfires were. Replaced the ignition coil, problem dissappeared. lol

Murdered SS

iTrader: (4)

Ok will do yea mine isn't that's bad just idle surges once in awhile but I will be replacing coils soon.

blackjack232

133k km lsj almost no mods will start seeing about stuff today

blackjack232

Pulled it all apart. Found #4 coil exploded, spark plug lossened and stripped the threads in the head, and now s*** hit the fan becayse I haven't touched it since the dealer did. Anyone a kind of repair fir this?

Gelladuga69

iTrader: (4)

Hah, as soon as I saw the title. I'm like, "Here's another one.." That happened to me and DSmastery up there.

You're gonna need a helicoil, timesert, or new head. Proposed cause of this is a cross threaded plug.

DS and I have ours fixed with a helicoil. I will say the car sounds sweet running on 3 cylinders.

ECaulk

iTrader: (6)

This, you have a good torque wrench and mechanical know how pull the head and insert the helicoil or a new head, if you don't give to the dealer or your mechanic to install the helicoil or a new head

Gelladuga69

iTrader: (4)

Would probably be the better way to do it, but the mechanic I had do it did it with the head on and the car's been solid since the repair. Almost a year now.

DSmastery

iTrader: (5)

to add to this, if there is oil in the chamber(spark plug area) get the valve cover gaskets replaced as well

i had assistance as i was iffy about pulling the cover and it has been good since

casionerd

iTrader: (3)

Mine sounds like a Subaru sometimes right now. Check engine light is always on and flashes occasionally. Started a few days ago. Mods are intake, exhaust, charge pipe, intercooler and tune. Mods haven't changed in about a year. Mileage is 42K.

I pulled the codes. P0300, P0301, P0302, P0303 and P0304. Pulled the plugs. Everything looked good except plug 1. It was a bit more fouled and there was oil on the threads. It was a little loose. So I put in new OEM plugs and cleared the codes. The CEL came on again. It flashes only at low speeds in first or second. Highway driving is fine. It's just when driving through neighborhoods or taking off that it has a problem.

I guess I'll clean the MAF and change the oil. It's due and is showing the oil at 59%. If that doesn't work, I'll change the coil packs. If that doesn't work, I'll put a new head and gaskets on there.

Lemme know if anyone has any other suggestions.

FML. LOL.

DSmastery

iTrader: (5)

yea the oil on the plug is the cause, got a bad seal / gasket.

car is just misfiring badly at low rpms, the flashing cel. i mean u have random misfires and specific ones which isnt good.

i havent see too many lnfs blowing threads, so as long as the plugs thread your good. but the sooner the leak gets fixed the better

casionerd

iTrader: (3)

Thanks for the help.

Since the car is at 42K miles and it needs an oil change, I figure I'll just go ahead and:

- seafoam
- new oil
- new plugs
- new evap purge solenoid
- new coil packs
- new valve cover gasket

Then clear the CELs and hope that nothing pops up for a while. If it keeps doing it.... well I'll be pissed.

05g5

the vavle cover gasket is rubber, unless its broken you can re-use it. along with tranny pan

SSLOW06

Took the balt for a fishing trip 2 hrs from home. On the way back I beat on her a little, engine light came on not flashing though. P0300 random misfire so I monitored it and seen 2&3 misfiring. Swapped cools to opposite cylinders and still2&3.. took plugs out and they were burning rich not as clean as 1&4. Not sure what to check next

Gelladuga69

iTrader: (4)

Try injectors.

ECaulk

iTrader: (6)

So you replaced the plugs and same issue? Do you have a LNF (your user name makes me think you have a LSJ or LE5)