Running rich with Hondata S300 on H22 Accord
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Running rich with Hondata S300 on H22 Accord
So my car has slowly gotten worse and worse since I got it tuned in December. It just about stalls out everytime I come to a stop after it's warmed up. I checked my oil and I have a very strong fuel smell coming from the dipstick. I have a Hondata S300 for my H22a Accord with Skunk2 Pro1 cams and valvetrain, Euro-r Manifold and 450cc DSM blue tops. Can I make changes to the program myself or are there other things I should be looking at first? Here are a few more details just in case it matters: I always run the highest octane fuel and my FPR is always right around 40psi. The car doesn't throw any CELs during driving but I also haven't put the paperclip in for a while to check. Jeff Evans did my tune so I know it was done right but I feel like something has changed drastically since my tune. Any help or tips would be great.
#2
Re: Running rich with Hondata S300 on H22 Accord
Have you checked the basics? I wouldnt reccomend retuning anything yourself if you dont have experience with it. If you think its the tune take it back to get retuned but since its been a steady decline then im leaning more twoards something is going wrong mechaniclly rather then with you tune.
Do you have exessive black smoke coming from the exhaust?
Does it run fine driving normal? Underl heavy acceleration?
I would check:
Bad spark plugs and wires
Leaking injectors (my first guess)
Do you have exessive black smoke coming from the exhaust?
Does it run fine driving normal? Underl heavy acceleration?
I would check:
Bad spark plugs and wires
Leaking injectors (my first guess)
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Re: Running rich with Hondata S300 on H22 Accord
Yes black smoke from the exhaust but not too excessive. Under heavy acceleration you'd think nothing was wrong. It runs great all the way to 8000 rpms. Plugs were replaced about a month and a half ago. I have NGK blue wires and they're about 1-1/2 years old. What do you mean by leaking injectors? Like under the seals where I couldnt see it? Thanks for your help.
#4
Re: Running rich with Hondata S300 on H22 Accord
By leaking injector i mean that when the injector shuts it doesnt completey block the flow of fuel. Under heavy exceleration its not as big of a deal because the duty cycle is so high and the car can quickly burn the extra fuel but whats left gets dumped into the oil. At idle when the injectors have more pressure against them and arent opening all the way your going to have a flood of to much fuel and not enough air. You cant see them leaking unless you pull them. What i do is pull the rail and leave the injectors in and brace them against it so they dont fly out and then i prime the fuel pump. No fuel should come out, if it does you have leaking injectors and they need to be replace asap.
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Re: Running rich with Hondata S300 on H22 Accord
Is it set-up to run in closed loop? If it is, maybe your wideband is bad. Just another possibility. Sense WOT seems fine, this is actually my best guess.
You could also do a datalog and post it up for people to look at.
You could also do a datalog and post it up for people to look at.
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