What causes a car engine to misfit at high RPM?
If the springs are too light, the mechanical advance can be erratic if the springs are not stiff enough to control the counterweights. Also, remove your cap and rotor and make sure the advance mechanism moves freely without hanging up. They can get sticky over time.
When to replace a cap or rotor on a car?
When you perform a maintenance function and the car runs worse after, you have to review the maintenance function first. If you replace the wires, it is often also a good idea to replace the cap* and rotor* because they age similarly. (*A LeSabre still has those, I think).
Why does my Buick not have a cap and rotor?
Your Buick doesn’t have a cap & rotor the ecm tells the coils when to fire. i would double check the wires to make sure correct wire going to the right plug. it cold be a crank sensor or a coil going bad the car has 3 coils on it. the coils how do they look where the wires conect to them is the post clean or is it pitted or corrioded
Why does my engine surge at high RPM?
Jets are .116 primaries, .113 secondaries. .065 X .037 Metering rods. Ahhhh, the rest of the details come out. Is it a dead-head regulator? I had a dead-head (non return style) regulator and my engine would surge at higher RPM’s like you described as well.
If the springs are too light, the mechanical advance can be erratic if the springs are not stiff enough to control the counterweights. Also, remove your cap and rotor and make sure the advance mechanism moves freely without hanging up. They can get sticky over time.
Jets are .116 primaries, .113 secondaries. .065 X .037 Metering rods. Ahhhh, the rest of the details come out. Is it a dead-head regulator? I had a dead-head (non return style) regulator and my engine would surge at higher RPM’s like you described as well.
Why does my engine spark at 3000 rpm?
It could be that you are getting a ‘wobble’ in the shaft that is causing erratic spark over 3000 rpm. Click to expand… It’s all in my signature. Jets are .116 primaries, .113 secondaries. .065 X .037 Metering rods.
When does the RPM go back to normal?
The RPM will usually go back to normal as you accelerate the vehicle, but will increase again after you stop. This is definitely not a normal situation. If you are experiencing a rough idle or your RPM is running high, then there are a variety of reasons for why this could be happening.
What should the engine RPM be before starting the car?
Your engine should normally get to around 700 RPM after you start the vehicle. If it is a few hundred RPM under or over that amount and you experience one or more of the problems listed above, then you will want to diagnose the issue right away.
What does it sound like when you hit 3000 rpm?
Ok so i have my car tuned up pretty well, ignition timing at about 12 degrees, brand new plugs and wires. Suddenly on my way home from town last week…i went on the gas pretty hard, and once the needle hit about 3000 RPM, it sounds like a popcorn machine in my exhaust, and the rpms jump all over the place.