1983 Nissan Sentra Misfiring/hesitation during acceleration

1983 NISSAN SENTRA
276,000 MILES • 1.6L • 4 CYL • 2WD • AUTOMATIC
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PIECEMEAL
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  • 2 POSTS
Nearly stalls when throttle is pressed down during normal acceleration. Started to occur recently when the vehicle warmed up. Now occurs whenever the car is running and being accelerated. Would like to narrow down possible causes.
May 24, 2014 at 1:12 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
check fuel pressure with a gauge autoparts rent it and clean throttle plate on both sides and iac hole with choke cleaner.
May 24, 2014 at 2:06 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
if thi sis a carbureted engine then have carb overhauled as alcohol has damaged the internal parts of carb.
May 24, 2014 at 2:07 AM
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PIECEMEAL
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  • 2 POSTS
It is fuel injected 16 valve, 1.6 liter. I am assuming that the problem is in the fuel distribution. I will try your fix. I also suspect possibly a dirty fuel filter or bad fuel pump. Idles fine but when the accelerator is pressed the engine rpms rise and fall. Seems that the air supply is fine after checking the vacuum lines. Also replaced the distributor cap and cleaned the rotor but the rubber cap gasket is swelled from oil contamination and broken as well as a rubber vent plug that is held in place by compression between the distributer housing and cap. Neither part is any longer available.
May 24, 2014 at 10:26 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
try www.Black Dragon auto.com they may have the part you need they handle all sorts of stuff and have Datsun catalogs which is forerunner of Nissan.
May 25, 2014 at 12:45 AM
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