No vacuum flow
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From: Metlakatla, Alaska
No vacuum flow
Hey guys. Working on my Dad's 1997 Mazda B2300 SE 2.3 Manual Transmission High Mileage truck he just bought early fall. This is a LOOONG 1st post, but I want to be thorough.
It was running really rough when he first brought it to me to work on. So far we've changed out-
Fuel filter
Plugs n wires
Catalytic Converter
#3 fuel injector (was throwing cylinder misfire code before)
All of the remaining injector o-rings
PCV valve
IAC valve
Gaskets- T.B., Upper intake manifold
Amazon sent a different socket connector on the Throttle Position Sensor, just received the correct pigtail so will change it later today.
Cleaned out the Throttle Body, EGR Valve, Seafoam treatment thru brake booster, bunch in the gas tank n some in the oil.
Did a vacuum leak check with brake cleaner and starting fluid.
Each step of changing out or cleaning it is running a little smoother and gaining more power. Going up really steep hills way less embarrassing now lol. Only noticable thing left exhaust wise is to replace the muffler/ tailpipe section because it sounds like an old Volkswagen!
I read up on a guy who suggested unplugging the IAC Valve while it was running to see if there were any vacuum leaks, if it stumbled/died- good, if no change- bad n there's a leak somewhere.So of course I try it and no change. I checked to see if the cleaning I did with the EGR valve made a difference. When I unplugged the Green vacuum line there was nothing, in or out of the EGR or the green line to the EGR Vacuum Solenoid Valve. Same for the Red vacuum line between the EGR VSV up to the back side of the Upper Intake manifold. I was so concerned about checking for leaks, I forgot to make sure that the lines were flowing too!
I've spent quite a few hours trying to find anything similar to this situation. I've read about guys with something close but not exactly the same. One replaced the EGR, one got away with cleaning it. Another changed out the EGR VSV. Read a guy had a cracked heater valve n replacing worked. One even said that recharging the A/C cleared up his vacuum problems!
It's been so much info overload to make my head spin!
Before I realized that there is no vacuum on the passenger side lines I was looking for a solution in the fuel side of things. Waiting for a pressure test kit to see what each cylinder and the fuel rail show. We get to hurry up and wait for it to arrive from Amazon...
So now, we're looking at possibly changing out the EGR Valve, EGR VSV, EGR Pressure Feedback Sensor. To have ALL of our bases covered, we'll change out the Lower intake manifold gasket. Hoping that you guys who have been around these Ranger/B series trucks can help guide us through.
It was running really rough when he first brought it to me to work on. So far we've changed out-
Fuel filter
Plugs n wires
Catalytic Converter
#3 fuel injector (was throwing cylinder misfire code before)
All of the remaining injector o-rings
PCV valve
IAC valve
Gaskets- T.B., Upper intake manifold
Amazon sent a different socket connector on the Throttle Position Sensor, just received the correct pigtail so will change it later today.
Cleaned out the Throttle Body, EGR Valve, Seafoam treatment thru brake booster, bunch in the gas tank n some in the oil.
Did a vacuum leak check with brake cleaner and starting fluid.
Each step of changing out or cleaning it is running a little smoother and gaining more power. Going up really steep hills way less embarrassing now lol. Only noticable thing left exhaust wise is to replace the muffler/ tailpipe section because it sounds like an old Volkswagen!
I read up on a guy who suggested unplugging the IAC Valve while it was running to see if there were any vacuum leaks, if it stumbled/died- good, if no change- bad n there's a leak somewhere.So of course I try it and no change. I checked to see if the cleaning I did with the EGR valve made a difference. When I unplugged the Green vacuum line there was nothing, in or out of the EGR or the green line to the EGR Vacuum Solenoid Valve. Same for the Red vacuum line between the EGR VSV up to the back side of the Upper Intake manifold. I was so concerned about checking for leaks, I forgot to make sure that the lines were flowing too!
I've spent quite a few hours trying to find anything similar to this situation. I've read about guys with something close but not exactly the same. One replaced the EGR, one got away with cleaning it. Another changed out the EGR VSV. Read a guy had a cracked heater valve n replacing worked. One even said that recharging the A/C cleared up his vacuum problems!
It's been so much info overload to make my head spin!
Before I realized that there is no vacuum on the passenger side lines I was looking for a solution in the fuel side of things. Waiting for a pressure test kit to see what each cylinder and the fuel rail show. We get to hurry up and wait for it to arrive from Amazon...
So now, we're looking at possibly changing out the EGR Valve, EGR VSV, EGR Pressure Feedback Sensor. To have ALL of our bases covered, we'll change out the Lower intake manifold gasket. Hoping that you guys who have been around these Ranger/B series trucks can help guide us through.
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