Did some research and got stumped..

[mn91]

So I pulled my plugs today after my car has been sitting for about 4 days and my spark plugs were all wet and smelled like fuel. About a week ago, after a drive, I inspected all 6 injectors (even though I didn't know what I was looking for) and to me they all looked good and I couldn't tell if it was leaking or not. It did not seem like it was to me atleast, but what would I know. I understand that it's most likely the cold start valve then all 6 injectors are leaking, but when I unplugged the connection to the cold start valve it caused hard starting in the mornings.. If it's leaking shouldn't it be easy start anyway's? And spark plugs 3-6 are fouled out.. but if every single plug is wet with oil why wouldn't 1 and 2 get fouled..? I'm very confused on this, my car is a 1976 280z with efi and it has been getting about 10-13 mpg. I checked all the pins on the ecu with fsm and it all checked out good.

[grantf]

I don't think you can tell much from a visual inspection of the injectors. What I would suggest is to look for other possible causes of a rich running engine. Bad temp sensor, an AFM that has been tampered with or the TPS out of wack. These were the main problems my car had and I got the mpg from 10 to near 20. If you think the cold start "injector" is to blame it could be or a bad thermotime sensor. try testing all of these things. hope this helps.

[mn91]

Well I already checked all the sensors from the pin down by the ecu by the efi bible standards and it all checked out. I also cleaned all the sensors connection that affects the efi. that's why I want to blame the cold start or injectors since my plugs wreaked of them but only if I leave it sitting for some time.

Thanks for the response grantf. I have family living in Seattle. It's a beautiful place to live even though it was raining half the time I was up there .

[mn91]

Ok I checked the cold start valve for leakage and it doesn't seem to be leaking. I even squeezed the fuel line to it trying to force it to leak out gas but it did not. So i took off my afm boot connected to the throttle body and tried reaching under there to see if it's wet with fuel. It was wet but it was almost like a mixture of oil and fuel. My plugs were wet again after sitting for 20 hrs. I disconnected the pcv valve to see if i could find any form of fuel and it was the same substance that was in the throttle body.. Now i am really stumped because if my cold start valve isn't leaking then what is? Anybody had similar symptoms it would be much appreciated.

thank you