Would a loud backfire through the intake manifold while cranking engine on 93 grand am sohc mean that you just ruined a valve cause it started yesterday with no problem and today this happened?

A leaking spark plug wire can cause a backfire out of the intake, but the most common cause is a burned intake valve. A burnt intake valve will allow leakage during the compression stroke back through the intake causing a popping backfire out of the intake manifold.

A backfire is caused by a misfire... a cylinder fails to ignite the fuel which may cause a stutter, it may also cause a back fire due to it pushing that un-ignited fuel into your manifold where it then ignites from the heat of the other cylinders and boom you have a backfire...

If it is the intake manifold, there will be vacuum leaks, backfire, and poor performance. If it is the exhaust manifold, you will have loud exhaust noise which may warrant a citation - also, emissions control laws will be violated. Take the manifold ro a shop where it can be re-surfaced or try to find a product at your local auto parts store that will help seal the manifold. - Good luck.

The inlet manifold is leaking air, weakening the mixture, OR the engine timing/sparkplug electrode gap is outside specified limits.

I just had the intake manifold gasket replaced on my 96 century yesterday and my bill was $450 but my gasket was only leaking out. If its leaking into your oil it may be more.

It sounds to me like your ignition timing may be off. Is it also hard to start? Possibly a manifold vacuum leak. Check out your engines tune up.

having bad spark plugs could effect how the spark sparks and when it sparks. new plugs is never a bad idea

ok, is the backfire through the exhaust or inlet manifold? if its through the exhaust it means ur mixture is to rich, causing unburnt fuel to ignite in exhuast, if through inlet it is a lean backfire, either way if carby in good condition it sounds like mixture screw, to adjust, start car and get to operating temp, wind mixture screw in till car almost stalls then back out 1 and a quarter turns, that's…

Most likely you have a misfire caused by an intake manifold gasket leak at #1 cylinder. That or basic misfire stuff like spark plugs or ignition wires. Check the intake

If it backfires while you are driving, the intake manifold bolts may be loose or the gasket may need to be replaced. If it backfires when you turn off the ignition, the fuel mixture is a little on the rich side.

With Beetles backfiring usually means that (usable fuel) is too lean. The gas fails to burn efficiently and the unburned fuel mixture fills the exhaust system. Add a spark and it explodes. This can be from a vacuum leak from the carburetor/intake manifold flange or the manifold where attached to the cylinder head. This can be be from a number of things, these are just the most common.

There are too many reasons this can happen to be positive, however the most common reason is the exhaust pipe is not snug, or bad gasket at the manifold. Where it bolts to the cylinder. If it is not that, you will need a harley mechanic to look at it.

It's probably leaking from a bad intake manifold gasket. You could be leaking from the heater hose that comes out of the firewall very close to the manifold. They sometimes leak there and drip down on the manifold. If it drips on a coil, it can eventually ruin the coil. It happened to me.

A car backfires because unburned fuel is getting to the muffler. The heat of the exhause system causes the fuel to combust, thus a backfire. I have just been told that the rubber on my exhaust has split - could this be why the car would backfire? I have heard something about air getting into the exhaust could cause a backfire? back fire can be caused by different faults. first is to much fuel because…

There is more than one engine and firing order available for that car. Note the direction the distributor rotor turns while cranking. The correct firing order is cast into the intake manifold.

There are several reasons the engine would backfire, but the three main culprits are a dirty air filter, a loose intake manifold bolt or gasket (vacuum leak), or a faulty spark plug. If the problem is not one of these three, check out a book on small engine trouble-shooting and repairs from your local library. You will find other procedures a little more complicated in the manual to help you trouble-shoot.

Two main kinds: true backfire is when flame leaps out of the intake manifold ... usually when trying to start the car. The more common form is when a air/fuel mixture builds up in the exhaust system and ignites. Often caused by a single cylinder not firing every time (or not at all).

Turning over indicates the starter is working. The voltage from the battery should be around 9 volts while cranking. If so, check spark plugs for spark. And spray quick start fluid into the intake manifold. If still no run get back to me.

Bad fuel or incorrect timing and/or weak spark or other component in secondary ignition system. usually late ignition timing could cause this or an excessive amount of fuel in the exhaust system. backfire can be caused by choke not shutting off completely, also could have a bad distributor cap, bad spark plugs, bad ignition condensor, bad plug leads, or to much fuel getting to carburetor system Consider getting yourself a service manual as it contains…

Backfiring is caused by a clogged/dirty air filter or fuel mixture is too rich. If air filter is clean, close needle valve 1/8 turn. Also can be caused by intake manifold vacuum leak. Check manifod for loose bolts or worn gasket.

It has been my experience that most backfiring problems are cause by intake vacuum leaks. You might want to check the torque on the intake manifold retaining bolts or it may be a worn intake manifold gasket. You might also want to inspect the vacuum hoses for cracks or loose connections. You might also check the timing. If the timing is off, it can also cause backfire and starting problems.

i just did it yesterday, u have to take the whole top end of the motor off(valve covers, coil packs, alternator, air box, plenum. ect) your best bet is the buy a Haynes repair manual

Have you replaced your spark plugs and or wires latly? First thing I would check is the wires to see if they were in order, #1 reason for a backfire condition, another is the your timing, have you messed with that ? Also check each wire to see if any of them are shorting out to the exaust manifold or the block, pull your plugs , take a look at each, check for oil on…

Most common, a rich fuel mixture will cause the backfiring. Check the condition of the air filter or close the needle valve on the carburetor 1/8 turn. Also, a vacuum leak will cause backfiring. Check the intake manifold for loose bolts or worn gasket.

Remove the exhaust pipe from the exhaust manifold. Remove the manifold bolts. Remove the manifold. Remove the manifold gasket and clean the surface. Reverse the process to install the new manifold gasket.

The intake manifold is where the air and fuel mix and enter the engine. The exhaust manifold is where unspent gas and air exit the engine. In other words the intake manifold is where the engine breathes in and the exhaust manifold is how the engine exhales out.

The manifold gasket is the same as the plenum gasket. The manifold gasket is a barrier between the manifold and the engine block.

Manifold means many and various. eg He had manifold failings - too numerous and varied to list. eg Nature in all its manifold splendour

A manifold leak is usually in reference to a failure of the intake manifold gasket. It can leak air, oil or coolant. It can leak to the outside of the engine or internally into the engine. A manifold leak may also refer to the Exhaust manifold that is leaking exhaust fumes from a bad gasket or a crack in the manifold.

diferential pressure sensor intake manifold plausibility

Remove the retaining bolts from your 2001 Mitsubishi Eclipse manifold. The manifold will come off. Remove the manifold gasket. Clean the surface and put the new manifold gasket on.

Intake manifold on top and exhaust manifold on the side.

Remove the intake manifold retaining bolts on your 2003 Chevrolet Malibu. The manifold will come off. Remove the manifold gasket and clean the surface. Put the new manifold gasket on and reverse the process.

The exhaust manifold needs to have a gasket in place to help seal the juncture between the manifold and the engine. After the gasket and gasket sealer are in place, tighten the bolts for the exhaust manifold. The exhaust pipe can then be replaced on the new exhaust manifold.

have you checked to see if there is any broken bolt on the manifold, or worped manifold, burnt manifold gasket

what is the gaga manifold made of

Assuming this is a 4.3L engine, the upper intake manifold gasket would be between the upper intake manifold and the lower intake manifold.

Intake manifold delivers the fuel air mixture to the cylinder heads, exhaust manifold collects the gases after combustion, and channels them into the exhaust pipe.

Need to know if it is the intake manifold or an exhaust manifold and what is wrong with it.

There is air in my manifold and can't find the bleeder valve to release it so how do i bleed my manifold?

Manifold Destiny was created in 2006.

John Manifold died in 1985.

John Manifold was born in 1915.

Manifold Records was created in 1993.

Walter Manifold died in 1928.

Walter Manifold was born in 1849.

Nope, the manifold carries out the burnt fuel air mixture (usually 14/1) then it enters the cylinder through the intake valve, then after the piston reaches the top on the compression stroke, your distributor connects the high voltage ignition coil to the spark plug wire, inside the cylinder the spark jumps across the gap between the electrodes of the spark plug and THAT is what ignites the fuel... Now, if the timing is off, or…

manifold or downpipe gaskets may be leaking gases or worse, cracked manifold

Do you mean intake manifold OR exhaust manifold. Need to know NEUTZ.

You will need to remove the exhaust manifold retaining bolts in your 1993 Chevy Astro. Remove the exhaust manifold. Remove the exhaust manifold gasket and clean the surface. Reverse the process to install the new exhaust manifold gasket.