Chevrolet V20 Engine is misfiring Inspection at your home or office.

Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM.

Estimate price near me

Service Location

Customer Ratings

(43)

How A Diagnostic Works

Instantly book a certified mobile mechanic to come to you

Mechanic diagnoses the problem and quotes necessary repairs

Your vehicle is ready to go

Fair, upfront & transparent pricing for all services

Our certified mobile mechanics can come to you now.

Customer Ratings

(43)

Engine is misfiring Inspection Service

How much does a Engine is misfiring Inspection cost?

On average, the cost for a Chevrolet V20 Engine is misfiring Inspection is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1987 Chevrolet V20V8-5.7LService typeEngine is misfiring InspectionEstimate$114.99Shop/Dealer Price$124.99 - $132.49
1987 Chevrolet V20L6-4.8LService typeEngine is misfiring InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
1987 Chevrolet V20V8-6.2L DieselService typeEngine is misfiring InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
Show example Chevrolet V20 Engine is misfiring Inspection prices

When an engines misfires, it’s usually readily apparent to the driver from the stuttering and jerking produced by the engine when one or more cylinders fails to fire properly, either because of ignition- or fuel-related issues. It is accompanied by a loss of power in direct proportion to the severity of the misfire.

It can be tricky for to track down the problem if the misfire only occurs under certain circumstances, for example, under load. Not all misfires occur across the operating spectrum.

For older vehicles:

On older, carbureted vehicles, the culprit will almost certainly be in the ignition system as older vehicles lack many of the sophisticated sensors that can cause a misfire. A vacuum leak or a faulty fuel pump can also cause this symptom as well. The first thing the mechanic will do is determine which cylinder or cylinders is misfiring, and the spark plug color is probably the best way to tell. The guilty plug will most likely be grayer than the others, which should tend toward brown coloring. If needed, the spark plug can be replaced.

The next step would be checking the wiring to that plug for cracks and deterioration, and replace as necessary.

For most modern vehicles:

In modern cars, misfiring will invariably be accompanied by a Check Engine light. In fact, checking for efficient combustion was the primary reason the U.S. government introduced the rules for OBD-II (on-board diagnostics, second generation). It was part of the push toward cleaner exhaust emissions.

A code reader will tell you which cylinder is to blame, but it may not say whether it is a problem relating to the injector serving that cylinder or the systems delivering the ignition spark. As with older vehicles, a look at the wires and spark plugs is a good idea. Checking them in the dark will sometimes reveal errant spark tracking, as will spraying them with a fine water mist.

One way mechanics check which spark plug is failing to hold its own is by running the engine at an idle speed high enough to produce the misfire, then removing leads from the coilpack (the unit that looks like the distributor we are used to seeing in older vehicles ) one by one. Most removals will cause a profound change in idling performance, but a defective wire will not. That will suggest that it’s either the spark plug or the coil serving that cylinder at fault. If a new spark plug at that cylinder does not remove the stumble, the mechanic may need to replace the coil pack or the wires as a set.

If it isn’t an ignition issue, then the injectors will need to be checked. A mechanic uses a multimeter to check the resistance value at each injector. It may be a bit difficult to reach them, sometimes requiring the removal of an engine cover and the intake manifold. The mechanic disconnects the injector, then touches the multimeter probes to the two connector prongs to read the value, in Ohms. If any of the injectors read outside of the specified values, they will need to be replaced.

Along the same lines, a fuel pump starting to go bad can also cause misfires or similar issues and can be diagnosed with a fuel pressure check of the entire system with the appropriate equipment. This should only be done by a qualified mechanic as the fuel system is highly pressurized and of course, fuel is flammable.

Common reasons for this to happen:

  • Faulty spark plugs or wires
  • Faulty ignition coil
  • Broken piston rings
  • Burnt or bent valves
  • Broken valve springs
  • Camshaft worn out
  • Fuel injector is not working

What to expect:

A top-rated mobile mechanic will come to your home or office to determine the source and cause of the misfiring engine, and will then provide a detailed inspection report that includes the scope and cost of the necessary repairs.

How important is this service?

A misfiring engine is accompanied by a loss of power, which makes this issue a critical one to correct promptly. Book a mechanic to perform a thorough inspection as soon as possible.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Chevrolet mechanics

Real customer reviews from Chevrolet owners like you.

Excellent Rating

(43)

Rating Summary
42
1
0
0
0
42
1
0
0
0

Shaun

10 years of experience
542 reviews
Shaun
10 years of experience
Chevrolet V20 V8-5.7L - Brake Pads Replacement (Front) - Phoenix, Arizona
He is so professional and he let me know everything I need for my car so it can get done and stay running right I love my mechanic keep up the good job

Michael

11 years of experience
98 reviews
Michael
11 years of experience
Chevrolet Corvette V8-5.7L - Engine is misfiring - Bayonne, New Jersey
Very good experience and friendly.

Brian

18 years of experience
74 reviews
Brian
18 years of experience
Chevrolet Silverado 1500 V8-5.3L - Engine is misfiring - Elk Grove, California
Brian arrived exactly on time. He began analyzing the engine codes, and performed a very complete inspection of the engine. Brian explained everything to; this did a lot to settle my anxieties. He completed the work, again he explained the entire process of putting my Silverado back on the road. Brian is a consummate professional. I desire that Brian perform the work. My confidence is very high on his talents.

Jerimiah

19 years of experience
328 reviews
Jerimiah
19 years of experience
Chevrolet Suburban 1500 V8-5.3L - Engine is misfiring - Henderson, Nevada
Was Early and Very knowledgeable, will be using this service exclusively !

Excellent Rating

(43)

Rating Summary
42
1
0
0
0
42
1
0
0
0
Number of Chevrolet Engine is misfiring Inspection services completed
473+
services done by our mechanics
TOTAL NUMBER OF EXPERT Chevrolet MECHANICS
1600+
experts on our platform

Recent articles & questions

Top 10 Scenic Drives in Kansas
There’s a reason why Dorothy said, “There’s no place like home.” There really isn’t any other state quite like Kansas. Its terrain is incredibly open, whether in flat prairies or rolling hills; it just seems to stretch into forever. While...
Should You Wax or Polish Your Car?
Polishing a car removes small damages done to the top coat of a car and wax provides a protective coating to keep paint jobs from fading.
How to Replace a Windshield Washer Pump
Car windshield washer pumps transfer the washer fluid from the washer reservoir to the washer nozzles. Washer pumps fail if used without fluid.

What do the various XM Radio messages mean?

Depending on the station and any obstructions blocking your satellite signal, your XM Radio may display any of a number of different messages. Here’s a quick summary: Loading – This means that the station is loading. Off Air – This...

Why is it running hot? 1999 Mitsubishi Galant

Hello - it sounds like you may be experiencing a blown head gasket (https://www.yourmechanic.com/question/head-gasket-blown), or the radiator is clogged. Given that the radiator cooling fan is coming on, the thermostat, appears to be opening and the water pump is transferring...

We have VTM4 check emission system and check VSA lights come on all at the same time

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com