Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

engine problems

Old Jan 17, 2008 | 11:09 PM
  #1  
david01130's Avatar
david01130
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From: CA
Default engine problems

The engine seems to start fine but when I put it into either drive or reverse it hesitates when I press the gas too quickly. When its in park the engine revs up fine with no problems. When it is in either low or the single smaller dot "starts in second gear" drive it accelerates better. All my plugs are all rotated one over on my distributor cap but i checked the timing and it looks fine. It idles fine too.

I didnt rotate the plugs over thats how they came when I bought the car. The pervious owner probably did that because it still has the metal tubing for the timing advance so its hard to adjust the timing.

Does anyone know whats wrong or what i shoudl try?
Old Jan 17, 2008 | 11:25 PM
  #2  
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67mustang302
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From: California
Default RE: engine problems

Carbureted? If the ignition timing is correct, then it's most likely an improperly tuned accelerator pump curcuit. Too much or too little fuel from the pump shot and the car will hesitate/bog/cough/sputter/backfire/stall etc.
Old Jan 17, 2008 | 11:27 PM
  #3  
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Mustangdemon67
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From: Los Angeles, CA
Default RE: engine problems

ORIGINAL: david01130

The engine seems to start fine but when I put it into either drive or reverse it hesitates when I press the gas too quickly. When its in park the engine revs up fine with no problems. When it is in either low or the single smaller dot "starts in second gear" drive it accelerates better. All my plugs are all rotated one over on my distributor cap but i checked the timing and it looks fine. It idles fine too.

I didnt rotate the plugs over thats how they came when I bought the car. The pervious owner probably did that because it still has the metal tubing for the timing advance so its hard to adjust the timing.

Does anyone know whats wrong or what i shoudl try?
i had that same problem and it was my mechanical advance limiters. do you have a stand alone electronic ignition?
Old Jan 17, 2008 | 11:41 PM
  #4  
david01130's Avatar
david01130
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From: CA
Default RE: engine problems

yes its a completely stock 289 with a 4bbl
Old Jan 18, 2008 | 08:22 AM
  #5  
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69thunder
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Default RE: engine problems

Check for proper choke operation.
Old Jan 18, 2008 | 03:50 PM
  #6  
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ninteen66mustang
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Joined: Dec 2007
Posts: 923
From: Colorado
Default RE: engine problems

check the points gap. I was having the same problem, if I am understanding it right, and i think it was that.
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