Car is starving for fuel
Thread Starter
Race Director
Joined: Aug 2001
Posts: 18,447
Likes: 14
From: Sheboygan Wisconsin
St. Jude Donor '04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14
Car is starving for fuel
3 quick questions maybe you guys can help me with.
1. How do you tell if your injectors are bad or clogged?
2. If your fuel pump is going bad does it just go or can it just work chitty before it gives out? Next question,,
3. Wouldn't either of these cause it to throw a code?
I ask because my car is starving for fuel, occasionally. Really weird chit started happening. Car drives fine then it's like it wants to cut out. Pull over rev it a few times and it just goes away. Took it to autozone (I know it's not the best set up in the world but it's a free test) and it's throwing no codes. Now it's happening more often. Not sure what to do. Any suggestions before I take it in?: Car has 38k on the clock.
1. How do you tell if your injectors are bad or clogged?
2. If your fuel pump is going bad does it just go or can it just work chitty before it gives out? Next question,,
3. Wouldn't either of these cause it to throw a code?
I ask because my car is starving for fuel, occasionally. Really weird chit started happening. Car drives fine then it's like it wants to cut out. Pull over rev it a few times and it just goes away. Took it to autozone (I know it's not the best set up in the world but it's a free test) and it's throwing no codes. Now it's happening more often. Not sure what to do. Any suggestions before I take it in?: Car has 38k on the clock.
Thread Starter
Race Director
Joined: Aug 2001
Posts: 18,447
Likes: 14
From: Sheboygan Wisconsin
St. Jude Donor '04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14
I've run it to almost empty and have fueled it back up to the top two or three times. When I took it out this season my first thought was bad gas. Weird because it just comes and goes.
Drifting
Joined: Jun 2002
Posts: 1,945
Likes: 41
From: Corinth TX
The reason I asked about the gas is because that is how mine was acting. If you siphon all or most of your gas out you might find some water. The water settles to the bottom and the gas will float. Good luck in finding out what the problem is.
Drifting
Joined: Jun 2002
Posts: 1,945
Likes: 41
From: Corinth TX
Ok cool, I just saw that you have a 93. You could always pull your fuel rail and then pull the injectors. If you pull the last two you should be able to see if you have water in the lines because it will come pouring out along with gas that is.
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
I would steer towards ohm'ing the injectors before anything but checking the fuel pressure is easiest. Do you have a fuel pressure gauge you can screw on the schrader valve?
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
3 quick questions maybe you guys can help me with.
1. How do you tell if your injectors are bad or clogged?
2. If your fuel pump is going bad does it just go or can it just work chitty before it gives out? Next question,,
3. Wouldn't either of these cause it to throw a code?
1. How do you tell if your injectors are bad or clogged?
2. If your fuel pump is going bad does it just go or can it just work chitty before it gives out? Next question,,
3. Wouldn't either of these cause it to throw a code?
2. It can do either. Sometimes it just goes bad without warning. Other times it will go slowly. Many things it could be..like bad connections, wiring, water, ect.
3. Nothing in the fuel system will cause a code. The only thing I can think of that will cause a code is (code 54 on the L98 cars which is low voltage). I haven't checked in my 92 FSM for a fuel system code although there could be one.
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Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 207
From: Orlando FL
You are making the assumption it’s a fuel starvation problem and that’s OK for starters. Check the fuel pressure and fuel filter. You might even want to pull out the fuel pump and check the sock on the pump to make sure its clean. Then also you can look I the tank with a flashlight.
Those year cars don’t have the problems with the injectors that the earlier years had and hold up really well. I think chances are low the injectors are a problem but checking the resistances on them is a quick check.
The other issue could be electrical related. You never said it ran poor but cuts out so I at this point would put an opti low on the list. An ICM is always a possible consideration but with these kind of weird problems I always think of the ECM. The amount of strange and weird symtoms seem to be getting broader and larger all the time that I hear about for the ECM.
Those year cars don’t have the problems with the injectors that the earlier years had and hold up really well. I think chances are low the injectors are a problem but checking the resistances on them is a quick check.
The other issue could be electrical related. You never said it ran poor but cuts out so I at this point would put an opti low on the list. An ICM is always a possible consideration but with these kind of weird problems I always think of the ECM. The amount of strange and weird symtoms seem to be getting broader and larger all the time that I hear about for the ECM.
