HELP! Subaru Noise & P0303! URGENT!
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HELP! Subaru Noise & P0303! URGENT!
Okay, so I just got back from limping this car back home from school.
I definitely get the "subaru noise" thing now.
She won't idle, flashing CEL, read the code, only 1, which is P0303.
Where should I start first? I have work in a half hour, but no way in hell am I gonna make it with that car.
Had to keep the RPMs up at the stop lights, and some ricer G5 thought I was revving at him.
I definitely get the "subaru noise" thing now.
She won't idle, flashing CEL, read the code, only 1, which is P0303.
Where should I start first? I have work in a half hour, but no way in hell am I gonna make it with that car.
Had to keep the RPMs up at the stop lights, and some ricer G5 thought I was revving at him.
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P0303 is cylinder 3 (?) misfire, I believe. Start with making sure the coil is on tight. May want to change your plugs depending on mileage and whatnot. Also could be bad gas if you're tuned.
I got some gas of questionable quality from Meijer and my car misfired like a b!tch until I filled up with something else.
I got some gas of questionable quality from Meijer and my car misfired like a b!tch until I filled up with something else.
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P0303 is cylinder 3 (?) misfire, I believe. Start with making sure the coil is on tight. May want to change your plugs depending on mileage and whatnot. Also could be bad gas if you're tuned.
I got some gas of questionable quality from Meijer and my car misfired like a b!tch until I filled up with something else.
I got some gas of questionable quality from Meijer and my car misfired like a b!tch until I filled up with something else.
Plugs maybe have like 12k on them.. NGK Iridium IX's.
Car only gets Mobil put in it.
I checked oil, it doesn't look milky. dunno about the head gasket, no coolant loss besides the little leak I've always had from my radiator.
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Beat me too it! haha
Last edited by kdub1492; 01-28-2013 at 02:25 PM. Reason: Automerged Doublepost
#13
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You shouldn't gap iridiums lol.
Check the plugs, leak down test and compression test.... your answers will be given to you right there...if it fails leak down or compression test you have a major problem. If it passes both then you have a little problem. However as an fyi a car can pass a compression test yet fail a leak down test. I can list so many things that can be wrong but without diagnosis its a shot in the dark
Check the plugs, leak down test and compression test.... your answers will be given to you right there...if it fails leak down or compression test you have a major problem. If it passes both then you have a little problem. However as an fyi a car can pass a compression test yet fail a leak down test. I can list so many things that can be wrong but without diagnosis its a shot in the dark
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You shouldn't gap iridiums lol.
Check the plugs, leak down test and compression test.... your answers will be given to you right there...if it fails leak down or compression test you have a major problem. If it passes both then you have a little problem. However as an fyi a car can pass a compression test yet fail a leak down test. I can list so many things that can be wrong but without diagnosis its a shot in the dark
Check the plugs, leak down test and compression test.... your answers will be given to you right there...if it fails leak down or compression test you have a major problem. If it passes both then you have a little problem. However as an fyi a car can pass a compression test yet fail a leak down test. I can list so many things that can be wrong but without diagnosis its a shot in the dark
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Noted. Would this set any sort of code or just the noise/
The car is all stock. I'll switch the coil packs and see, but would the misfire also cause the subaru noise I'm getting?
Plugs maybe have like 12k on them.. NGK Iridium IX's.
Car only gets Mobil put in it.
I checked oil, it doesn't look milky. dunno about the head gasket, no coolant loss besides the little leak I've always had from my radiator.
The car is all stock. I'll switch the coil packs and see, but would the misfire also cause the subaru noise I'm getting?
Plugs maybe have like 12k on them.. NGK Iridium IX's.
Car only gets Mobil put in it.
I checked oil, it doesn't look milky. dunno about the head gasket, no coolant loss besides the little leak I've always had from my radiator.
Start with your plugs, and maybe swap coils 2/3 and see if the misfire switches cylinders.
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Thank you guys for the info.
I haven't gapped my iridiums. These plugs have been in there for 12k miles or so.
Was searching for that, and couldn't find anybody saying it.
Gonna get home and swap the coils 2/3 and see if the CEL switches to a different cylinder.
I may buy a set of "cheaper" plugs to test against my current plugs as well.
I'll update in a couple hours, thanks guys.
I haven't gapped my iridiums. These plugs have been in there for 12k miles or so.
Gonna get home and swap the coils 2/3 and see if the CEL switches to a different cylinder.
I may buy a set of "cheaper" plugs to test against my current plugs as well.
I'll update in a couple hours, thanks guys.
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Yeah sorry.
I wasn't able to do all the work I wanted today, because it's straight pouring here in MI.
I pulled the plugs.. #3 plug and coil are destroyed.. The boot is just ripped.
I stuck a magnet down in there and was picking up shavings of stuff.. Got most/all of it out.
Thread #3 is now messed up so I'm getting that helicoiled.
I don't know the full extent of the damage yet, but I'm getting there. I'll keep the thread updated.
Here's a video I posted in a different thread of a valve train noise, which I believe may have lead to all of this.. :
- That video was when the engine was warm. Speed of ticking changes with the RPMs.
I wasn't able to do all the work I wanted today, because it's straight pouring here in MI.
I pulled the plugs.. #3 plug and coil are destroyed.. The boot is just ripped.
I stuck a magnet down in there and was picking up shavings of stuff.. Got most/all of it out.
Thread #3 is now messed up so I'm getting that helicoiled.
I don't know the full extent of the damage yet, but I'm getting there. I'll keep the thread updated.
Here's a video I posted in a different thread of a valve train noise, which I believe may have lead to all of this.. :
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Yeah sorry.
I wasn't able to do all the work I wanted today, because it's straight pouring here in MI.
I pulled the plugs.. #3 plug and coil are destroyed.. The boot is just ripped.
I stuck a magnet down in there and was picking up shavings of stuff.. Got most/all of it out.
Thread #3 is now messed up so I'm getting that helicoiled.
I don't know the full extent of the damage yet, but I'm getting there. I'll keep the thread updated.
Here's a video I posted in a different thread of a valve train noise, which I believe may have lead to all of this.. :
Video Link: http://youtu.be/JVxu8JSHqM8 - That video was when the engine was warm. Speed of ticking changes with the RPMs.
I wasn't able to do all the work I wanted today, because it's straight pouring here in MI.
I pulled the plugs.. #3 plug and coil are destroyed.. The boot is just ripped.
I stuck a magnet down in there and was picking up shavings of stuff.. Got most/all of it out.
Thread #3 is now messed up so I'm getting that helicoiled.
I don't know the full extent of the damage yet, but I'm getting there. I'll keep the thread updated.
Here's a video I posted in a different thread of a valve train noise, which I believe may have lead to all of this.. :
Video Link: http://youtu.be/JVxu8JSHqM8 - That video was when the engine was warm. Speed of ticking changes with the RPMs.
Once again good luck and keep us updated!!
#20
Yeah sorry.
I wasn't able to do all the work I wanted today, because it's straight pouring here in MI.
I pulled the plugs.. #3 plug and coil are destroyed.. The boot is just ripped.
I stuck a magnet down in there and was picking up shavings of stuff.. Got most/all of it out.
Thread #3 is now messed up so I'm getting that helicoiled.
I don't know the full extent of the damage yet, but I'm getting there. I'll keep the thread updated.
Here's a video I posted in a different thread of a valve train noise, which I believe may have lead to all of this.. :
Cobalt SS Idle Tick - YouTube - That video was when the engine was warm. Speed of ticking changes with the RPMs.
I wasn't able to do all the work I wanted today, because it's straight pouring here in MI.
I pulled the plugs.. #3 plug and coil are destroyed.. The boot is just ripped.
I stuck a magnet down in there and was picking up shavings of stuff.. Got most/all of it out.
Thread #3 is now messed up so I'm getting that helicoiled.
I don't know the full extent of the damage yet, but I'm getting there. I'll keep the thread updated.
Here's a video I posted in a different thread of a valve train noise, which I believe may have lead to all of this.. :
Cobalt SS Idle Tick - YouTube - That video was when the engine was warm. Speed of ticking changes with the RPMs.
#21
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I had a plug blow out aswell. Although i got a random multiple cylinder misfire. Easiest an first thing to check is obviously plugs. Then check for any chewed wires to the coil packs. Oter than that ur really going to have to do some more serious diag.
#22
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you folks really should torque the spark plugs.The LSJ spark plug has a gasket, needs to be tightened, undone 3/4 of a turn and re-torqued. Its a scandal this happens, and its not the fault of the engine... sad to say. Glad you may be out of the woods Gelladuga, good luck.
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15 FT LBS iirc look it up.
The reason wheels fall off and studs break, spark plugs fall out or threads strip is:
under torqued or over torqued. take your pick.
results are the same.\
There are some engines (Ecotec is not one of them) that have the issue due to a design issue, Ford produce a spark plug thread repair kit for some of their engines, I cant remember which ones, but its out there.
Ecotec issues with sparkplugs is just sad work.
my .02c
The reason wheels fall off and studs break, spark plugs fall out or threads strip is:
under torqued or over torqued. take your pick.
results are the same.\
There are some engines (Ecotec is not one of them) that have the issue due to a design issue, Ford produce a spark plug thread repair kit for some of their engines, I cant remember which ones, but its out there.
Ecotec issues with sparkplugs is just sad work.
my .02c