Help pinging fuel problem
Thread Starter
2nd Gear
Joined: Jun 2009
Posts: 2
Likes: 0
Help pinging fuel problem
I've got a '93 that pings and craps out when it's warm. The fuel pump was replace about 10,000 miles ago but when it's down to a quater of a tank it starts screaming. It's really loud.
Also I noticed today the charcoal canister line is all plugged. I do smell gas and when I take the cap off I get a whoosh.
I thought the whoosh was the cap not venting at first so I took it off and the car died after about half a mile. Then it ran like it was out of gas, pop and sputter. I limped home and after a few restarts it was running "normal" again. A little less pinging but it's still there.
Doesn't matter who's gas I run it pings and craps out.
So can the line to the charcoal canister being plugged cause it crap out and ping? Do I have 2 problems, the second being a bad fuel pump?
I thought at first maybe a knock sensor but I don't get any codes.
Also I noticed today the charcoal canister line is all plugged. I do smell gas and when I take the cap off I get a whoosh.
I thought the whoosh was the cap not venting at first so I took it off and the car died after about half a mile. Then it ran like it was out of gas, pop and sputter. I limped home and after a few restarts it was running "normal" again. A little less pinging but it's still there.
Doesn't matter who's gas I run it pings and craps out.
So can the line to the charcoal canister being plugged cause it crap out and ping? Do I have 2 problems, the second being a bad fuel pump?
I thought at first maybe a knock sensor but I don't get any codes.
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
Chances are like most vetts the fuel gauge is wrong. It usually measures more fuel in the tank than what you have. And if you are getting down to 2 gallons or less it will make some darn noise which is rather normal.
First fix all that is obviously wrong and needs repair then go from there. The fuel tank does normally pressurize and you will smell gas when the cap is removed.
I would start by measuring the fuel pressure and see if the pressure is correct or have a flow problem when the engine requires more fuel under power. Perhaps the filter is clogged or the sock in the tank.
Just a thought that if you’re not getting sufficient fuel to the engine, it might lend to a to lean condition and ping, just a guess. Hopefully the ECM is not the problem causing the timing to be to advanced.
First fix all that is obviously wrong and needs repair then go from there. The fuel tank does normally pressurize and you will smell gas when the cap is removed.
I would start by measuring the fuel pressure and see if the pressure is correct or have a flow problem when the engine requires more fuel under power. Perhaps the filter is clogged or the sock in the tank.
Just a thought that if you’re not getting sufficient fuel to the engine, it might lend to a to lean condition and ping, just a guess. Hopefully the ECM is not the problem causing the timing to be to advanced.
