Coughing engine going uphill
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Junior User
Joined: Sep 2006
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From: San Jose, Ca
Coughing engine going uphill
First of all, I want to apologize because the engine I am asking about is in a '85 Lincoln Town Car. But it is a Ford product, and everyone at FTE has been awesome in helping me with my F250. So I was hoping it would be OK to ask about the Lincoln's engine here since this could probably happen in a Ford pickup too. Thank you.
With that said, the Lincoln has a Throttle Body injected 302, and the problem I am having is when going uphill on a long grade at highway speeds. It will start up the hill fine, but then I think I hear a little pinging right before the engine starts 'coughing'. The engine kind of cuts out with a pop sound, which jerks the car. It seems like it might be a fuel delivery problem. It returns to normal shortly over the summit of the hill.
I have replaced the fuel filter, and ran a couple of bottles of fuel injector cleaner through it too when I would gas it up. I even tried Premium gas. But none of that helped. Any suggestions ?? Thank you.
Bill
With that said, the Lincoln has a Throttle Body injected 302, and the problem I am having is when going uphill on a long grade at highway speeds. It will start up the hill fine, but then I think I hear a little pinging right before the engine starts 'coughing'. The engine kind of cuts out with a pop sound, which jerks the car. It seems like it might be a fuel delivery problem. It returns to normal shortly over the summit of the hill.
I have replaced the fuel filter, and ran a couple of bottles of fuel injector cleaner through it too when I would gas it up. I even tried Premium gas. But none of that helped. Any suggestions ?? Thank you.
Bill
Cargo Master
Joined: May 2007
Posts: 2,071
Likes: 35
From: British Columbia
That's a classic symptom of fuel starvation in a carburetted car. It could be a weak fuel pump or a clogged filter "sock" in the gas tank fuel line pickup. I had a 1985 Crown Vic with a 351, but it had a carburettor.
I'm not sure how to check for fuel delivery with the fuel injection, but with the carb this is what I did:
Disconnect the fuel line and direct it into a clear bottle. Have someone start the engine and let it idle for a few seconds and watch the fuel flow. If it comes out in a good healthy stream then all is okay. If it just drips out, it's no good.
Maybe this technique will work on your car?
I'm not sure how to check for fuel delivery with the fuel injection, but with the carb this is what I did:
Disconnect the fuel line and direct it into a clear bottle. Have someone start the engine and let it idle for a few seconds and watch the fuel flow. If it comes out in a good healthy stream then all is okay. If it just drips out, it's no good.
Maybe this technique will work on your car?
Thread Starter
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Junior User
Joined: Sep 2006
Posts: 52
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From: San Jose, Ca
That sounds like a good place to continue. I don't know if it has a filter sock in the tank, but if it does, could I clear it by using an air compressor to blow the gas, then air back into the tank ? And would that still work if it's fuel pump is located in the gas tank ? Thanks.
Bill
Bill
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