Engine Makes Popping Sounds and Hesitates or Lags


Popping and Hesitating

Engine Makes Popping Sounds and Hesitates or Lags

the Symptom: Engine hesitates, and a popping is heard from the engine. When you step on the gas, the engine seems to bog down or takes a second to respond. You may notice a general lack of power. You may notice the problem when the engine is hot or cold or when you are low on fuel. The popping noise really tells you something is not right.

Possible causes:

1. You may have a dirty air filter.

The Fix: Replace the air filter.

2. The ignition wires may be bad.

The Fix: Replace ignition wires.

3. There may be some other type of ignition problem.

The Fix: Check distributor cap or rotor. Ignition module may be bad.

4. Internal engine problem.

The Fix: Check compression to determine engine condition

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Problems With Engine Idle


Troubleshooting Problems With Engine Idle

In many ways, engine idle is a good measure of your engine’s health. If anything is going wrong under the hood, there’s a good chance it will be affecting your car’s idle speed and quality. Problems with idle speed, things like slow idle, low idle, bad idle, lumpy idle, fast idle — these are symptoms that should be investigated, troubleshooted, diagnosed and repaired. The following symptoms and related problems should act as a guide in helping you troubleshoot your idle issues.

Symptom: The engine will not idle smoothly, or it stalls during idle when the engine is cold. When the engine is cold and you take your foot off the gas pedal, the engine runs very rough and may even stall. When you run the engine at higher speeds, it seems to run fine.

Possible causes:

1. If you have a carburetor, you may have a bad accelerator pump or power circuit.

The Fix: Replace accelerator pump or replace carburetor.

2. There may be a vacuum leak.

The Fix: Check and replace vacuum lines as required.

3. There may be some type of ignition problem.

The Fix: Check and replace distributor cap, rotor, ignition wires and spark plugs.

4. The ignition timing may be set wrong.

The Fix: Adjust ignition timing.

5. There may be a fault in the computerized engine control system.

The Fix: Check engine control systems with a scan tool. Test circuits and repair or replace components as required. (Generally not a DIY job)

6. The EGR valve may be bad.

The Fix: Replace EGR valve.

7. The engine may have mechanical problems.

The Fix: Check compression to determine engine condition.

8. Idle speed set incorrectly.

The Fix: Set idle speed to specs.

9. The fuel injectors may be dirty.

The Fix: Clean or replace fuel injectors.

Ellesmere Port


“Just a short note to let you know that the service that Ellesmere Port Engine Centre and its staff provide in the timely repair of my personal and company vehicles is the best that I have experienced. From the simple tasks of changing oil to the not so easy rebuild of my Ford F-350 clutch and 6 speed manual transmission, no job seems insurmountable for your technicians. Your prompt same day service, fair pricing and unbeatable warranty will always make your facility my first stop for all my auto repair needs. As a small business owner we do appreciate you taking care of business. We have had our business for over 8 years and would recommend your repair facility to anyone. Ellesmere Port Engine Centre friendly and no nonsense approach to repairs and warranty make it almost fun to have my vehicles repaired. Thank you for all your good work”

Ste from Ellesmere Port