Skip the auto shop - Our mechanics make house calls

Q: engine is missing an surging an idle is rough - 1994 Mazda B4000

asked by on

I'm having missing an rough idle not running well at all no vaccum leaks I cleaned egr valve that helped a little it sounds like my coil pack but not sure I put new plugs an wires in it changed the running a little it doesn't effect my gas mileage at all it jerks going down the hwy an pings when I give it gas up hill this is my daily driver

My car has 180000 miles.
My car has an automatic transmission.

A: Hello. This sounds like you have a lean run...

Hello. This sounds like you have a lean running engine. This can be from carbon build up on the valves and dirty or clogged injectors. Have the combustion chamber and injectors cleaned. Then see if the engine runs better. If you need help with this repair, a certified technician from YourMechanic can come to your home or office to diagnose the misfire and rough idle.

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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Computer shows misfire cylinders and timing advanced banks codes

You didn't say which exact timing codes were set, but these codes can also be set by a faulty camshaft or crankshaft sensor. However, more often than not, the problem is with the timing components. The timing belt only has...

Q: Four-wheel drive thumping noise. 2006 Mazda B4000

Hello. It sounds like the transfer case is going bad causing the thumping noise you are hearing. The transfer case transfers power to the front wheels so that all four tires are working during four-wheel drive. If the transfer case...

Q: Car surges when stopped & suddenly dies while driving

Hey there, thanks for writing in about your 2001 Chrysler LHS. Both of these problems can be dangerous and can only be diagnosed by verifying the problems first by a mechanic to diagnose them. A scan for codes may show...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...