Cylinder Misfires
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Joined: Jun 2022
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From: Northeast Atlanta
Cylinder Misfires
I bought an ap1 in late June with 162,000 miles. I have put around 1,000 miles on the car myself. I replaced the coolant reservoir because it was cracked. Around mid July I got a check engine light. When I checked the code it said I had a cylinder 1 misfire. I replaced sparkplugs (with Denso), I also noticed that there was oil in the sparkplug wells so I cleaned out the oil as best as I could and replaced the seals. I cleared the code and everything was fine for 4 days. The check engine light came back on so I looked up the stickied misfire post on s2ki and I followed it. I changed the coilpacks (Denso), I changed the fuel pressure regulator (OEM), I changed the fuel injectors (OEM). I got a valve adjustment, but my valves were fine for the most part they only had to adjust a minuscule amount. I got a compression test done in all cylinders and the results were
Cylinder 1: 120
Cylinder 2: ~180
Cylinder 3: ~180
Cylinder 4: ~180
After 2 weeks in which I replaced all the stuff mentioned before I did another compression test and now cylinder 1 was down to 100
I did a leakdown test and cylinder 1 showed 92% cylinder leakage with 90 psi
After a couple weeks I decided to insert the OBD II again to see and now I have a misfire in cylinders 1, 3, and 4.
I finally took it to a general shop my family has worked with before and the mechanic said he wanted to change the timing chain as well as the TCT I agreed and when he went to drain the oil he found metal in it. Metal flakes lit up when he illuminated them. So he did an engine flush and added an additive.
I only have filled it with premium fuel from either Costco or Quiktrip and I changed the oil myself with Castrol GTX. This is all new to me because my family has had really good luck with cars as the only bad example I can remember is an Altima with their terrible CVTs. I don’t feel a loss of power, the car does exactly what I want it to. My friend did say that he saw white smoke when I was in front of him taking off after a green light. With the top down I used to smell exhaust or gas. Now I smell a sweet smell too (I’m leaning more towards oil) I don’t know if it’s that because of the additive. I’m pretty lost at the moment because there are 4 options I could take: rebuild the engine with stronger internals or oem parts (I cannot find any kits though), buy a refurbished F20c (I don’t know how good of an idea it would be to buy a refurbished engine), or k swap.
I would like to know exactly what is wrong with it, where is the metal coming from? I’ve never overrevved or misshifted the car. If anyone has any guesses I would love to hear it. I am also looking to rebuild the engine but I don’t know any shops near me. If anyone could recommend a shop in GA I’d highly appreciate it!
Cylinder 1: 120
Cylinder 2: ~180
Cylinder 3: ~180
Cylinder 4: ~180
After 2 weeks in which I replaced all the stuff mentioned before I did another compression test and now cylinder 1 was down to 100
I did a leakdown test and cylinder 1 showed 92% cylinder leakage with 90 psi
After a couple weeks I decided to insert the OBD II again to see and now I have a misfire in cylinders 1, 3, and 4.
I finally took it to a general shop my family has worked with before and the mechanic said he wanted to change the timing chain as well as the TCT I agreed and when he went to drain the oil he found metal in it. Metal flakes lit up when he illuminated them. So he did an engine flush and added an additive.
I only have filled it with premium fuel from either Costco or Quiktrip and I changed the oil myself with Castrol GTX. This is all new to me because my family has had really good luck with cars as the only bad example I can remember is an Altima with their terrible CVTs. I don’t feel a loss of power, the car does exactly what I want it to. My friend did say that he saw white smoke when I was in front of him taking off after a green light. With the top down I used to smell exhaust or gas. Now I smell a sweet smell too (I’m leaning more towards oil) I don’t know if it’s that because of the additive. I’m pretty lost at the moment because there are 4 options I could take: rebuild the engine with stronger internals or oem parts (I cannot find any kits though), buy a refurbished F20c (I don’t know how good of an idea it would be to buy a refurbished engine), or k swap.
I would like to know exactly what is wrong with it, where is the metal coming from? I’ve never overrevved or misshifted the car. If anyone has any guesses I would love to hear it. I am also looking to rebuild the engine but I don’t know any shops near me. If anyone could recommend a shop in GA I’d highly appreciate it!
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