Skip the auto shop - Our mechanics make house calls

Q: Spits and sputters in higher rpm

asked by on

My question is about a poor running 1978..305.. Recently I replaced the points, condenser, cap, and rotor. I set the points at .019. She was running fine 'till I got my fingers in her. She idles fine and at low rpm is OK but when she gets to about 2000rpm she starts to miss....please help

Hey there. You need to try and reset the point gap to .025 and then run the engine again. You should also get a spark tester and see how much power your coil is putting out. If it is not able to jump a 1/2 inch gap, then the coil is weak and will cause the spark to be too weak to get the engine going much above 2000 rpms. You may want to replace the coil and also check the spark to plugs to make sure it is okay. If you need a diagnostic of the vehicle, a certified professional from YourMechanic can come to your car’s location to inspect the stuttering problem in order to have this corrected.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Spits and sputters in higher rpm

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Engine is misfiring and the service engine soon light is on.

Hi there. If the engine is misfiring you would need to check the spark plugs and fuel injectors to see what is not working. If the spark plug has no spark, then check the spark plug wire for spark by-passing...

Q: The car engine runs erratically when it is cold, then runs just fine after the car warms up after a while.

There is a few things that would need to be checked on the vehicle before a diagnosis could be made. You may need to have the vehicle checked when the vehicle is stone cold to get the computer readings of...

Q: Car turning off when being driven

Hi there. If the engine is turning off at random times then it is almost always a crank position sensor problem. This is a common issue. I diagnose this by installing a computer scan tool to see if the crank...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.