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Thanks for your guys’ responses
The reason why I stopped using 91 was because the car did not run right with it hence why i did not push it. i did use it for a couple tanks but it would not run right. I do drive it a lot on the highway. I put about 400 miles a week on it. rarely do i drive short trips.
About the the carbon; I understand what you are saying. When i had the head apart there was some, not a lot, but some carbon on top of the pistons. I removed a lot of it, cleaned the surfaces, then put the fresh head along with the gasket. However, when i took it for a test drive, that’s when i noticed it was pinging while going up a hill and never stopped since. So it was pining even with the carbon build up removed.
Thanks for your guys’ responses
The reason why I stopped using 91 was because the car did not run right with it hence why i did not push it. i did use it for a couple tanks but it would not run right. I do drive it a lot on the highway. I put about 400 miles a week on it. rarely do i drive short trips.
About the the carbon; I understand what you are saying. When i had the head apart there was some, not a lot, but some carbon on top of the pistons. I removed a lot of it, cleaned the surfaces, then put the fresh head along with the gasket. However, when i took it for a test drive, that’s when i noticed it was pinging while going up a hill and never stopped since. So it was pining even with the carbon build up removed.
Along with what wysetech said, also check you battery terminals too. Especialy the positive terminal, Corrosion can cause weird things to any car.
Along with what wysetech said, also check you battery terminals too. Especialy the positive terminal, Corrosion can cause weird things to any car.
Thanks for your response.
That thought has been in the back of my mind ever since the repair. I did retard the timing 2 degrees some time ago and it still pinged and lost about 2 mpgs. So I set it back to stock. I did try 89 and it pinged. I didnt push the motor while running 91 so I can’t say if it helped.
My thinking right now is an air/fuel ratio problem hence why ive been checking for vac/ exhaust leaks. I did replace the o2 sensor some time ago and it still pinged lol. When i had the whole thing apart i did wipe crud from the intake runners where the injectors were located. Is it possible that i Damaged the tips of my injectors by doing so? Hence fuel is not being mixed properly with the air to cool the pistons causing pinging without the car detecting a rich or lean condition?
Thank you
Chris
Thanks for your response.
That thought has been in the back of my mind ever since the repair. I did retard the timing 2 degrees some time ago and it still pinged and lost about 2 mpgs. So I set it back to stock. I did try 89 and it pinged. I didnt push the motor while running 91 so I can’t say if it helped.
My thinking right now is an air/fuel ratio problem hence why ive been checking for vac/ exhaust leaks. I did replace the o2 sensor some time ago and it still pinged lol. When i had the whole thing apart i did wipe crud from the intake runners where the injectors were located. Is it possible that i Damaged the tips of my injectors by doing so? Hence fuel is not being mixed properly with the air to cool the pistons causing pinging without the car detecting a rich or lean condition?
Thank you
Chris
At least for my civic, i had an issue similar to that whenever i would accelerate. It turned out to be a sparkplug wire that would pop out. the engine would run intermintently on three cylinders till i poped it back in. simple tune up solved my issue. im not leanin towards you transmissiom but the oil change would not hurt. I would start looking at ur ignition system.
Hope that helps
Chris.At least for my civic, i had an issue similar to that whenever i would accelerate. It turned out to be a sparkplug wire that would pop out. the engine would run intermintently on three cylinders till i poped it back in. simple tune up solved my issue. im not leanin towards you transmissiom but the oil change would not hurt. I would start looking at ur ignition system.
Hope that helps
Chris.Thanks for your response. I believe 87 is the right octane for this engine as it says in my manual. Been puting that octane since i got the car with no problem till the hg repair. the car doesnt overheat and i bled it the way the service manual says to do it as well as eric’s vid. At first i thought it was the cooling system because when i start it in the morning it would rev all the way to 1800 rpm then back to 1500 rpm and stay at 1500, but thats the only thing that is “off” ever since the repair. Before, it would never rev past1500rpm on coldstarts. My timeing is set to stock, at the red line between the two other lines on the crank pully (12 degrees before tdc i believe).
i know what you are saying. Its the first thing i checked and researched constantly years ago but it all checked ok and still is. Anything else i probably looked over? something tells me its something stupid. some small thing i looked over
Chris
Thanks for your response. I believe 87 is the right octane for this engine as it says in my manual. Been puting that octane since i got the car with no problem till the hg repair. the car doesnt overheat and i bled it the way the service manual says to do it as well as eric’s vid. At first i thought it was the cooling system because when i start it in the morning it would rev all the way to 1800 rpm then back to 1500 rpm and stay at 1500, but thats the only thing that is “off” ever since the repair. Before, it would never rev past1500rpm on coldstarts. My timeing is set to stock, at the red line between the two other lines on the crank pully (12 degrees before tdc i believe).
i know what you are saying. Its the first thing i checked and researched constantly years ago but it all checked ok and still is. Anything else i probably looked over? something tells me its something stupid. some small thing i looked over
Chris