ok i have been having long start and rich running conditions with my car for a few weeks. 2 weeks ago after i drove it and it sat a week it wont start now. i have spark, fuel, good fuel pressure when primed, injectors are not leaking, iat, temp sending unit all reading correctly,. no loose grounds, no burnt up wires, good coil etc. this car has everything it needs to run and it just wont!! when it was running there was no ses lights. what could i possibly check next???

 

Fuel pressure regulator diaphragm leaking? Filling the manifold up and getting the plugs wet would keep it from starting. Had a northstar caddy do that to me once. The big clue was liquid gasoline dripping out the tailpipes.

Somebody put Diesel fuel in the tank? One week I had about 30 cars towed in like this. The first one took a while to figure out, until I threw a match into a fuel sample. Once we spoke to all the customers, we figured out which gas station had a 87 tank full of #2 Diesel.

 

it ran before really rich and would start and the starting got longer and longer and now just wont start. i dont think the diaphrams leaking. its getting fuel into the cylinders but even after clearing them out and putting new plugs in i get nothing.

 

 

maybe leaky injectors?

 

ive checked them and i didnt see one leak after being primed

 

Do you have a strong blue spark? or a weak orange one. Could it have jumped time. Any popping when cranking or just dead

 

the spark is blue and its just cranks and cranks its sounds like it wants to go after some cranking but just wont

 

Have you tried putting the gas peddle to the floor while cranking.

Pinning the peddle with turn off the injectors as to not add more fluid to an allready RICH condition if you do have fuel leakage....(even if you dont see it).

 

compression test?

 

You don't think so? Pull the vacuum line off it and have an assistant turn the key to the run position while you watch.

 

i have pulled the vacuum line and didnt make a difference, i have compression, and i used to have to start it with the peddle to the floor and thats the only way it sounds like it wants to start it kinda has a rougher crank when i do that sounds like its about to fire. im lost lol it wont even fire on ether!

 

I think you are missing my point. The physical action of pulling the line isn't going to do much. It is the looking at the regulator while the line is pulled and the pump is running that will tell you if there is a massive problem or not.

 

starting fluid, just to see if it starts

 

If the peddle to the floor is making a difference and making it start or sound like starting, then I think you are on to something with a fuel leak.....

Dont be scared to crank it with the peddle down, all you are doing is killing the injectors.... Just lift when it fires.

 

thats usually what i do. and as far as the regulator goes what im i looking for when i pull the line?

 

Fuel to come out where the line was connected Cycle the key with out starting the engine and check to see if fuel comes out or it has leaked in any way.

 

Have you checked the injector O rings to see if they are leaking or even missing?