Q: missing engine

asked by on

I have 1973 chevy truck that i changed over to electric ingnition a while back about 4 years ago now the truck runs smooth at idle but when i push the gas fast it pops like it missing
My car has an automatic transmission. i also put new cap and rotor plug and wires and new modual in distibuter it just started about 3 days ago 350 motor 4 barral and timing is right on mark

It is hard to say if the problem is from the distributor advancing timing or if your carburetor is not pumping fuel into the engine. With engine off, look into the carburetor and move the throttle to see if you see fuel squirting into the front two throttle bores.

If you see fuel then the accelerator pump is working. If you do not see fuel squirt in then the fuel pump is bad and the carburetor needs overhauled or replaced.

You need to also look to see if the timing is increasing when you accelerate the engine. The timing should increase to above 25 or 35 degrees when you accelerate. If you are not getting any advancement of the timing then the distributor is causing the problem.

I’d recommend getting the vehicle inspected by a certified technician, they will be able to diagnose your misfiring symptoms and fix it accordingly.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. missing engine

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: I am having an issue with a 2011 Aveo where it loses power accelerating and braking/slowing down. The hard part is this is really

The possible causes of this intermittent loss of power include a faulty oxygen sensor, weak fuel pump and/or clogged filter, vacuum leaks, ignition system malfunctions, bad valve timing if the timing belt or chain is worn or skipped, blocked exhaust...

Q: Blinkers do not work - 1973 Chevrolet C20

Check the fuse for the turn signal circuit. If the fuse is good, then a mutimeter will be needed to check the turn signal switch, and wiring to each turn signal bulb socket. A professional mechanic with good electrical diagnostic...

Q: Engine failed, what can I do?

From the sounds of it, you have done nearly everything possible. Regular oil changes, as outlined in the owner’s manual, are imperative. If the repairs are being done under warranty, the Dealer will most likely request copies. It is also...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...