dj paul Posted March 7, 2007 Share Posted March 7, 2007 Hey guys, my car sputters when it has been sitting for 20 minutes or more when parked on a hill with the engine above the gas tank. Does this mean my fuel pump is weak or something? it is also really hard to start when it is below 40 deg. Spark is good and it runs great once its warmed up. When its below 40 it takes almost 10 minutes to actually start. I have to crank, then wait, then crank, then wait. This is really hard on motor and starter and id rather not do it. Its starting to get warmer so i should be able to figure it out soon if no one has any ideas. Thanks in advance, paul Quote Link to comment Share on other sites More sharing options...
SteelToad Posted March 7, 2007 Share Posted March 7, 2007 Do you frequently smell gas, or have worse than expected mileage ? A small fuel leak would let the fuel run back to the tank, and condensation in the cold would suck air into the line making it hard to start, but you would probably see some physical evidence of gas. Quote Link to comment Share on other sites More sharing options...
dj paul Posted March 7, 2007 Author Share Posted March 7, 2007 actually yes i do. right around the cold start injector i saw it looking wet, ran my finger over it and smelled gas. Also around the PCV valve which i just replaced. I retightened it yesterday and have not seen it around the PCV valve again yet. What should i do with the cold start injector? i dont see any cracks, and i loosened bolts, moved it around, and retightened it. Is there any quick fix? i also have pretty bad gas mileage, especially when i floor it. It almost seems to drink gasoline worse than my other one. Quote Link to comment Share on other sites More sharing options...
SteelToad Posted March 8, 2007 Share Posted March 8, 2007 I'm great at problems, solutions I'm not so good at. My guess is that it's a stuck or bad injector, but others here have forgotten more than I know, might be time to check the search. Quote Link to comment Share on other sites More sharing options...
cygnusx1 Posted March 8, 2007 Share Posted March 8, 2007 The check valve at the discharge of the fuel pump is probably stuck open. It's a pretty easy fix. Unscrew the check valve from the pump and clean it or replace it if you can find one. The hose actually clamp onto the check valve. It is very small and looks like part of the pump. Looks like these which are Bosch for Porsche. Not sure if they are interchangeable with our pump. http://www.maximumautoparts.com/PO_Fuel~Pump~Check~Valve_mo.html Quote Link to comment Share on other sites More sharing options...
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