Hey folks,
I'm finally learning engines (suspension guy) and gradually chasing down an issue with my 94 3.2 SOHC. The engine has been bogging out when I snap the throttle at low rpm and wants to die/kind of backfires. as if it's either getting too much air or not enough fuel. I've replaced a few parts and done some work along the way:
-had a seized up/slow to adjust IAC valve and swapped that out.
-code 33 for MAP and swapped that out.... no improvement, but it doesn't throw that code anymore.
- discovered oil in a couple of the spark plug wells, so did the valve cover gaskets and new plugs and new wires... a bit better, but still embarrassing when accelerating from a stop light and definitely terrifying when accelerating from a stop headed uphill.
-Pulled the bloody plenum back off again, pulled the injectors and flushed those out and replaced every vacuum hose that I could get my hands on... way better, but still no where close to being safe in traffic.
I should add, the FPR holds vacuum and coils meter out good.
I finally did today what I probably should have done before any of this... I got myself a fuel pressure testing kit. The only reason I didn't do it earlier is because the fuel pump was replaced only 3 tanks of gas back. However, running pressure is just exactly 20psi on the rail. I can't find anywhere what the pressure is supposed to be, but that seems mighty low to me. Seems like it should be roughly double that.
Anyhow, before I go and drop the fuel tank and chuck in a new pump, is there anything else along the way I should be looking for? What is the psi supposed to be at? What is the best pump to go with? I'm just trying to keep this thing limping along until the winter and do an r2.8 swap. Help me go camping until then!
I'm finally learning engines (suspension guy) and gradually chasing down an issue with my 94 3.2 SOHC. The engine has been bogging out when I snap the throttle at low rpm and wants to die/kind of backfires. as if it's either getting too much air or not enough fuel. I've replaced a few parts and done some work along the way:
-had a seized up/slow to adjust IAC valve and swapped that out.
-code 33 for MAP and swapped that out.... no improvement, but it doesn't throw that code anymore.
- discovered oil in a couple of the spark plug wells, so did the valve cover gaskets and new plugs and new wires... a bit better, but still embarrassing when accelerating from a stop light and definitely terrifying when accelerating from a stop headed uphill.
-Pulled the bloody plenum back off again, pulled the injectors and flushed those out and replaced every vacuum hose that I could get my hands on... way better, but still no where close to being safe in traffic.
I should add, the FPR holds vacuum and coils meter out good.
I finally did today what I probably should have done before any of this... I got myself a fuel pressure testing kit. The only reason I didn't do it earlier is because the fuel pump was replaced only 3 tanks of gas back. However, running pressure is just exactly 20psi on the rail. I can't find anywhere what the pressure is supposed to be, but that seems mighty low to me. Seems like it should be roughly double that.
Anyhow, before I go and drop the fuel tank and chuck in a new pump, is there anything else along the way I should be looking for? What is the psi supposed to be at? What is the best pump to go with? I'm just trying to keep this thing limping along until the winter and do an r2.8 swap. Help me go camping until then!