B18 not getting fuel?
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B18 not getting fuel?
Hello everyone!
I have a 98 civic hatch with a B18 non vtech out if a 93 integra. Recently the check engine light came on and problem code 01 comes up (OBD1). That code is for oxygen content. So I figured O2 sensor. (Was I wrong?) So I replaced the O2 sensor with a new one. I cleared the codes and the code continues to appear. I have noticed that the code appears when I climb a mountain or if I'm pushing it a little hard. I also notice that my air/fuel ratio gauge goes from staying with 12-14 to being pegged at 20(which is the limit). I believe that the engine is not getting enough fuel for the amount of air going into it. Am I wrong? What sensors do I need to check or replace to see if something is wrong? Thanks for your help. I'll try to answer replies quickly and to the best of my knowledge.
The engine was swapped July '15. This just now started occurring since December '16.
I have a 98 civic hatch with a B18 non vtech out if a 93 integra. Recently the check engine light came on and problem code 01 comes up (OBD1). That code is for oxygen content. So I figured O2 sensor. (Was I wrong?) So I replaced the O2 sensor with a new one. I cleared the codes and the code continues to appear. I have noticed that the code appears when I climb a mountain or if I'm pushing it a little hard. I also notice that my air/fuel ratio gauge goes from staying with 12-14 to being pegged at 20(which is the limit). I believe that the engine is not getting enough fuel for the amount of air going into it. Am I wrong? What sensors do I need to check or replace to see if something is wrong? Thanks for your help. I'll try to answer replies quickly and to the best of my knowledge.
The engine was swapped July '15. This just now started occurring since December '16.
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Re: B18 not getting fuel?
If I understand what you wrote, I'd guess the engine is starving for fuel (fuel system is going lean) during a high demand condition.
Check fuel pressure and flow? Mount a pressure gauge at the fuel rail and drive it at WOT/redline a few times (or up the same hills as before) and see if pressure maintains or if it drops off while the engine acts up or runs bad.
If pressure drops off under a high load and high rpm then you found something to go on and figure out such as low pressure or a flow restriction.
Fuel filter? Pump weak? Mashed line somewhere?
Check fuel pressure and flow? Mount a pressure gauge at the fuel rail and drive it at WOT/redline a few times (or up the same hills as before) and see if pressure maintains or if it drops off while the engine acts up or runs bad.
If pressure drops off under a high load and high rpm then you found something to go on and figure out such as low pressure or a flow restriction.
Fuel filter? Pump weak? Mashed line somewhere?
