Question about Datsun 720

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When I try to accelerate it bogs down and falls on its nose. It doesn't matter what the RPMs are when you try to accelerate it hesitates bad like its not getting any fuel, it also sometimes back fires.

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6ya6ya
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Posted on Jan 02, 2017

  • 10 Answers

SOURCE: the rpms on my vehicle go up for no apparent

I would check the Temp Sensor. This is a common problem on the saturns. It is a easy part to replace and should only cost @$20

Posted on Jul 07, 2009

shocktroop40
  • 155 Answers

SOURCE: bogging and hesitation on acceleration iddle is fine

You definitely covered most of the bases. Considering all you've done so far, I would check into the fuel system next. First, how old is the fuel filter? Has it been changed? Yes, a bad filter can cause the problems your having. Next would be the fuel pressure regulator. You need a fuel pressure gauge to check it, which you should be able to rent from a good auto parts store. That will also tell you how good your fuel pump is, i.e. if the pump can deliver the necessary fuel pressure off idle. After that, I would check the injectors themselves for wear or blockage. A bottle of fuel injector cleaner in the gas tank would be a good idea, cheap, quick, and it wont make anything worse. If all that checks out, check your catalytic converter, a clogged or bad cat will also do what your describing. Good luck.

Posted on Aug 03, 2009

  • 5 Answers

SOURCE: 89 olds cutlass ciera bogging down when accelerating.

my 89 cutlass did the same thing....She would bog down ( when the service engine light came on)....Light would go off and she would run fine...Shop replaced fuel fiter and KNOCK SENSOR, runs great now, the service engine light stays off too. Ran a can of MG injector cleaner thru too.

Posted on Oct 15, 2009

  • 82 Answers

SOURCE: 1989 Acura Integra that hesitates after driving.

Sounds a lot like your spark plaugs / leads are havign some trouble conducting.

Spark plugs and leads sound be changed every 12500 miles (spark) / 40000 miles (leads).

If they are nearing the end of their life you will get this hesitation.

Also a good thing to check is your distributor cap. I had a similar issue with my integra where it would bunny hop unless i absolutely planted my foot down.

I pulled off the distributor cap and cleaned the pins on the inside of the cap (flat head screw driver and scrapped away all of the built up carbon) Once i had done that (and replaced my leads and plugs the car went back to smooth riding all of the time.

Posted on Mar 09, 2010

  • 3 Answers

SOURCE: 2002 Audi A4 3.0 Stalling and bogging down majorly.

Ignition coils has to be the answer. if it was the fuel pump your car wouldnt start. So i would say contact audi. they should have sent you a letter in the mail. We have the same car and i got a letter from them. ignition coils are the recall for the 02 a4.

Posted on Apr 08, 2010

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Bogging and hesitation on acceleration iddle is fine


You definitely covered most of the bases. Considering all you've done so far, I would check into the fuel system next. First, how old is the fuel filter? Has it been changed? Yes, a bad filter can cause the problems your having. Next would be the fuel pressure regulator. You need a fuel pressure gauge to check it, which you should be able to rent from a good auto parts store. That will also tell you how good your fuel pump is, i.e. if the pump can deliver the necessary fuel pressure off idle. After that, I would check the injectors themselves for wear or blockage. A bottle of fuel injector cleaner in the gas tank would be a good idea, cheap, quick, and it wont make anything worse. If all that checks out, check your catalytic converter, a clogged or bad cat will also do what your describing. Good luck.

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