help help help
Thread Starter
TECH Apprentice
Joined: Feb 2010
Posts: 319
Likes: 0
help help help 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???
TECH Fanatic
Joined: Feb 2006
Posts: 1,025
Likes: 1
From: CT/NJ
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.
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.
Thread Starter
TECH Apprentice
Joined: Feb 2010
Posts: 319
Likes: 0
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.
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.
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.
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TECH Regular
Joined: Jan 2010
Posts: 411
Likes: 1
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).
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).
Thread Starter
TECH Apprentice
Joined: Feb 2010
Posts: 319
Likes: 0
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!
TECH Fanatic
Joined: Feb 2006
Posts: 1,025
Likes: 1
From: CT/NJ
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!
TECH Regular
Joined: Jan 2010
Posts: 411
Likes: 1
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.
Dont be scared to crank it with the peddle down, all you are doing is killing the injectors.... Just lift when it fires.
