vwblue1967
Member
- Joined
- Apr 3, 2010
- Location
- NC
1993 244
Im having a poorly running, stalling, no start, runs perfect for 500 miles then won't start issue.
I'm not sure what all can be that intermittent with the fuel system but I believe it's time to test the fuel pressure. The Bentley manual doesn't mention the Schrader valve and the pressure gauge with the 90degree angle from IPD shows it doesn't fit my car (maybe not accurate). My car has the Schrader valve on the fuel rail and one in-between the tank and main pump.
I've never used one of these valves before and can't find too much info on them. My question is, how do you test the pressure? Is that a cap on a valve you can see? Do you twist the cap off and screw a fitting on it?
I've swapped relays, fuel filter, main pump, (in tank pump in the mail), power stage, CPS, coolant temp sensor.. and lots of other parts in the last two years. I tested the IAC valve and cleaned it. Checked grounds and connections. It will run as it always has then randomly freak out and stall or not start. Off and on randomly. My last 4 tanks of gas we're 25-26 mpg...not great but not bad for a 240.
Im having a poorly running, stalling, no start, runs perfect for 500 miles then won't start issue.
I'm not sure what all can be that intermittent with the fuel system but I believe it's time to test the fuel pressure. The Bentley manual doesn't mention the Schrader valve and the pressure gauge with the 90degree angle from IPD shows it doesn't fit my car (maybe not accurate). My car has the Schrader valve on the fuel rail and one in-between the tank and main pump.
I've never used one of these valves before and can't find too much info on them. My question is, how do you test the pressure? Is that a cap on a valve you can see? Do you twist the cap off and screw a fitting on it?
I've swapped relays, fuel filter, main pump, (in tank pump in the mail), power stage, CPS, coolant temp sensor.. and lots of other parts in the last two years. I tested the IAC valve and cleaned it. Checked grounds and connections. It will run as it always has then randomly freak out and stall or not start. Off and on randomly. My last 4 tanks of gas we're 25-26 mpg...not great but not bad for a 240.