I think my car is making backfires. i hear a loud pop whenever i start the car and start moving. I thought only old cars do this. mine is a 1998 hyundai.
why is it doing this?
2006-12-18 07:05:10 · 6 answers · asked by Lara^mt 5 in Cars & Transportation ➔ Maintenance & Repairs
Whenever an engine is backfiring you have either an exhaust or an intake valve open as the combustion in the cylinder takes place, If it is backfiring through the exhaust it is from an exhaust valve open or cracked. The same for an intake valve, it will backfire under the hood through your throttlebody.
It may be that the ignition spark is not occurring at the proper time. Check your cam timing, Ignition wire routing. If no problem is found, take compression readings on the cylinders to find out which one might be causing the problem. Look for low compression in one of them.
This post can go on and on, but this should be a good starting point.
Tritonmods.com
2006-12-18 07:28:43 · answer #1 · answered by Tritonmods 2 · 1⤊ 0⤋
1998 Hyundai is kind of old if you think about it. It is 8 years old and if you do not maintain it on a regular basis, it will begin to run rough. You should start by changing the air filter, spark plugs and spark plug wires, pcv value and the fuel filter. You may also need to change the oxygen sensors. Good Luck
2006-12-18 15:14:40 · answer #2 · answered by dave m 1 · 0⤊ 0⤋
The basic idea is that unburned fuel and a spark (or heat, enough to cause combustion) are getting in the exhaust manifold at the same time. This could be caused by a carburetor needing adjustment, the timing could be off or one of the cylinders isn't firing at all. Time for a tune up! :)
2006-12-18 15:14:00 · answer #3 · answered by ♥chelley♥ 4 · 0⤊ 0⤋
If your valves have build-up, corroded, or are otherwise damaged then burning fuel may be entering the intake manifold or exhaust headers. Usually this happens when you let off the throttle. Try and check the condition of the valves before you get into working on timing issues, sometimes that can get pricey depending on how the valves are timed and how easy it is to access the necessary parts.
2006-12-18 15:33:45 · answer #4 · answered by Anonymous · 1⤊ 0⤋
It probably has something to do with your timing. It is possible the distributor has rotated ever so slightly causing the problem. It may also be the cam shaft/distributor gear being worn causing the timing to be off. This will cause the spark plugs to fire when they aren't suppose to (either a fraction of a sec to early or too late) and cause the back fire. You should also check your spark plug cables are properly installed.
2006-12-18 15:12:02 · answer #5 · answered by a351cobra 2 · 0⤊ 0⤋
your plug wires could be leaking voltage. try running it sat nite with no light on the engine ansd watch for the light show. change the wires
2006-12-18 20:07:32 · answer #6 · answered by spotlite 5 · 0⤊ 1⤋