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Old 12-10-2014, 12:18 AM   #1
victork
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Default 02 wrx knock

Im getting engine knock, sometimes knock feedback as bad as -4.11 and fine knock learn of -2.11 but dam stays at 16. I have a log from a 3rd gear pull but can only email it as im using my phone. If someone with some trouble shooting/data log experience wants to help and can give me a email id appreciate it. Or even if somebody will post it for me
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Old 12-10-2014, 12:38 AM   #2
Uncle Scotty
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this isn't the tuning forum
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Old 12-10-2014, 12:49 AM   #3
victork
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I wasnt sure where to post as i was thinking of it as trouble shooting more than tuning. Makes sense. Maybe a mod can move it?
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Old 12-10-2014, 01:33 AM   #4
Uncle Scotty
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is the check engine light on?

yes = burn it and start over with a hunduha
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Old 12-10-2014, 01:45 AM   #5
victork
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No check engine light and if i wasnt looking at the guages id assume everything is good
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Old 12-10-2014, 07:44 AM   #6
quazimoto
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List...............your......................mods. .......................
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Old 12-10-2014, 07:50 AM   #7
victork
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Well uncle scotty jinxed me! Just got 2 cels, p0301 cylinder 1 misfire and pfffe. Car has catback, inlet, and cobb v3 stage 1 93
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Old 12-10-2014, 07:52 AM   #8
AlexWRXbruh
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Based on the fact you live in CT, id say its normal. Im seeing similar results as temps drop. Perhaps the colder air being denser forces the car to pull back ignition timing because it has to compensate by adding more fuel...idk. Im not a tuner, but this made sense to me. Clark Turner tuned my car and told me over and over in regard to FKL events; "system is working. As long as dam stays full ur good"...any other thoughts?


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Old 12-10-2014, 10:27 AM   #9
victork
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I took the coil pack off cylinder 1 (passenger front) and swapped it with the one next to it (#3?). Iooked at the plug on cyl 1 and it looked ok as far as i can tell. So after swapping coil packs around i warmed it up and it sounds ok but i just hit the gas while parked maybe 1/4 throttle and feedback knock right away (-4.11)
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Old 12-10-2014, 08:35 PM   #10
victork
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I changed my base map to the stage 1 91 instead of 93. Its alot better but i saw some knock under aggressive driving (3rd pull). Im gonna log in the am and try to post
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Old 12-15-2014, 08:51 PM   #11
victork
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Update: changed plugs (ngk irridium), fuel/air filter, and put lucas fuel system cleaner in. Car is way better it records almost no knock on my AP. Coming off the hwy however i did get a flashing cel which i missed the count and a ways down a long road got the cel to flash again 23 times. Cel did not stay on. I saw on a list cel flashing 23 times means mass air sensor but not sure if that pertains to my car? Before i bring it in for a compression test i want to know if i can find a issue else where.
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Old 12-15-2014, 09:22 PM   #12
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A flashing CEL is a gross misfire. A solid CEL means a stored DTC. You paid a lot of $$$ for the Cobb AP V3. Why don't you actually learn how to use it. Like the OBDII reader and datalogging part.
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Old 12-15-2014, 09:31 PM   #13
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did ya gap them plugs when you installed them??

yes = I bet you $5 that you killed at least one of them-----broke the electrode off and didn't even know ya did
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Old 12-15-2014, 10:28 PM   #14
victork
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@uncle scotty, 2 of the plugs were at .030 and 2 were alittle more like .034 so i gave the strap of the plug a little tap to close it a hair. I didnt have the plug gapper in at that time. Its some bs if the plugs are that sensitive. I havent cleaned my maf either ill do that tomorrow. As far as datalogs i only have wifi on my phone and have my buddy pull them up on his computer. Thing is that last week and this week im working 12hr days opposite his hrs.

Last edited by victork; 12-15-2014 at 10:35 PM.
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Old 12-15-2014, 10:39 PM   #15
victork
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I guess ill pull the plugs out and inspect them in the morning. If they look good and the gap hasnt changed
Can i rule that out for now?
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Old 12-16-2014, 09:01 AM   #16
victork
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Well it doesnt look good at all. Threw a cyl 1 miss fire this morning so i pulled cyl 1 plug and the gap is still .030 and the ground strap is white, other than that the plug doesnt look like it was ran but the coil pack was hot. Getting the louder than normal valve type sound around 3k rpm, cant tell if its cyl 1 not firing or rod knock. This thing is screwed
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Old 12-19-2014, 10:56 AM   #17
victork
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Well i compression tested my cylinders and all 4 were 150 psi. Unfortunitly im almost positive my bottom end is in the early failure stage i can hear the tick at 3k rpm pretty damn good and when i first take off its a little rougher than usual. Im not going to bring it to subaru and pay to be told they need to pull it apart to look at it as itll end up being thousands in the end. I guess im gonna save up and get a low mileage longblock maybe from japan as that seems cost effective but itll take me a month or two before i can purchase it. Last questions in this thread are can i maybe get a month or two put of my motor? If i put new oil will it help prolong my engines demise?
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Old 12-19-2014, 11:05 AM   #18
ride5000
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you need to do a compression test.

if that comes back good, replace your coil packs. all 4.
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Old 12-19-2014, 11:25 AM   #19
victork
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I dont think you read what i said. All my cylinders are 150 psi but im pretty sure my rod bearing is in the early stage of going
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Old 12-19-2014, 11:34 AM   #20
ride5000
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you could do an oil analysis in that case.

there is no oil that will prevent further damage from being done if the bearing's already shot.
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