Need help understanding what is wrong with my car
Thread Starter
Joined: Nov 2022
Posts: 3
Need help understanding what is wrong with my car
My car is a 2002 honda accord v6 j30a1 I just did a head gasket replacement im having trouble figuring out what i did wrong and need some help any ideas on what could be wrong with it it also slightly smokes from what looks to be the valve cover.
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Joined: Sep 2006
Posts: 16,331
From: Houston, TX
We'll need some information about what you did for the repair, like did you take the cylinder head to a machine shop to get is milled perfectly flat? Did the engine overheat to cause the head gasket to fail?
How is the engine running once you got everything back together (or won't it start)? Is the check engine light on while the engine is running?
How is the engine running once you got everything back together (or won't it start)? Is the check engine light on while the engine is running?
Thread Starter
Joined: Nov 2022
Posts: 3
The car had been leaking coolant and would over heat itself and dump the coolant and then when out of coolant completely out so I decided to take it to a mechanic he ended up telling me it was the head gasket and was asking 2000$ without labor included so I decided to do it myself i got the heads off and took the cams off took them to a machine shop to get resurfaced I got new gaskets and injectors sparkplugs ignition coils belts replaced the water pump also only codes that pop up are the 2 o2 sensors which I know is some of the cause but im more concerned for what’s burning up to cause the valve cover or whats under it to smoke a bit
https://vimeo.com/776856274
https://vimeo.com/776856274
Last edited by Jseriesg; Nov 30, 2022 at 10:27 PM.
Super Moderator
Joined: Sep 2006
Posts: 16,331
From: Houston, TX
If it is a little bit of smoke, then it is most likely from grease/fluids/cleaners burning off the exhaust manifold. I'd say this is normal after a major repair.
The engine is kind of loud in the video. Do you have the exhaust hooked up? Is the engine running smoothly? I can't tell from the video.
The engine is kind of loud in the video. Do you have the exhaust hooked up? Is the engine running smoothly? I can't tell from the video.
Thread Starter
Joined: Nov 2022
Posts: 3
Old problems fixed now i have a new problem
I had replaced the front and back o2 sensors and drained a bit of the out since it was a bit over filled and had recently done a valve adjustment for it which made the car sound alot more quiet but now the engine is bogging out when accelerating and idles weird having a hard time figuring out why it might be running rough
https://vimeo.com/785315577
https://vimeo.com/785315577
Last edited by Jseriesg; Dec 30, 2022 at 06:22 PM.
Super Moderator
Joined: Sep 2006
Posts: 16,331
From: Houston, TX
The car is idling weird it keeps bogging out and sounds like it wants to die when you gas it the car has a code p1399 and i have done the valve adjustment,I have replaced the injectors and spark plugs and fuel pump and am still having issues is there anyway that the cruise control might be causing this i had took it off just cause i didnt want it but is it needed to make the car run smoothly again
You don't need cruise control for the car to run properly. You would just need to make sure you plug any vacuum lines to the cruise control, so you wouldn't create a vacuum leak.
Can you tell me the wire colors going to the map sensor and the throttle position sensor?
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