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Low Compression is a mechanical problem, not electrical. A poor coil CAN create misfires, jerking, poor mileage, low power, etc. because the spark is insufficient to ignite the gas vapors properly. Coils must be replaced. I had to do so on my 1993 Sidekick and it is not a difficult operation. You can even buy a aftermarket version for much less money than going through a dealer.
As to Compression, that is due to the condition of the cylinders, pistons, valves and rings. A bad compression ring or a leaking valve seat can cause low compression. You might want to have your valve clearances checked. Tight clearances can cause valves to not close properly and therefore "burn" them.
If you can get your hands on a compression tester, test it on each cylinder and record that. Then squirt a bit of oil into the cylinder and try again. If it is higher, it could represent bad rings. Oil burning can also show bad rings and/or loose valve guides especially if it is during initial startup or deceleration. Any of these latter problems must be handled by a qualified mechanic.
Sometimes you can reduce the low compression, at least temporarily, with Restore added to the oil. I have personally used Motor Silk as a long term additive that I feel works. Some people do not. But these additives are only that and cannot repair mechanical failures. Good Luck!
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Why will an engine not start but will turn over?
Is there gas in it? Fuel tank empty . Fault in the carburetor and fuel injection system . Battery terminals connections loose or corroded , battery discharged ( eng rotates slowly ) . Fuel pump faulty . Excessive moisture on , or damage to ignition components . Worn, faulty or incorrectly gapped spark plugs , Broken ,loose or disconnected wiring in the starting circuit , ignition coil or faulty coil . Low cylinder compression , Faulty distributor pick-up coil or ignition module ?
Could a faulty ignition coil lead to backfiring?
Probably not. But it could be caused by a "pickup coil", rotor, distributor cap, loose connection... lots of other possibilities. I don't see how. Backfiring is usually caused by improper timing. When a coil goes bad it usually just quits.
Can a faulty ignition coil cause sporadic stalling while driving?
yes
Would the ignition coil in a 1997 cavalier be the reason the car is so noisy?
Only if a faulty coil is causing a misfire. A faulty coil can be diagnosed easily by connecting an oscilloscope and looking at the waveforms.
Why 305 motor is not getting sparks?
...could be allot of reasons why you may not be getting spark, here are some: # no power to ignition coil. faulty ignition. # faulty distributer cap, rotor. # faulty ignition module. # check for start signal from ecm. ...and there is a few more.
What could cause your 1994 Honda Prelude to not get spark from the coil?
Either the coil is bad or the ignition control module is bad.I would think the coil is faulty.
Why would a 1986 AE82 Toyota Torolla 4ac engine cut out once the engine starts to warm up if it appears lectrical and you have changed distributer cap ignition coil and ignition module?
Car had a faulty immobilizer that caused the problem.
Why would a 1992 Nissan Sentra 1.6 have gas but a spark so weak that it won't start?
A weak spark can be caused by a faulty ignition coil, or perhaps bad spark plug wires.
How do you determine if the ignition coil is faulty?
Swap it with a known good coil. Give us the year, make, model and engine info for more info.
I have a cbr 125r have just had a new battery relaced but has already gone flat. Could this be affected by a faulty ignition coil?
More likely a charging fault. Check stator, rectifier and regulator. A faulty ignition coil would cause misfire, scant acceleration and lumpy idle.
1996 dodge 1500-318 Turns over but will not start-why?
Faulty rotor button? Tune up recommended Faulty ignition coil? Crank sensor malfunction?
No fire on 1969 350 engine with hei and accel super coil just replaced with new coil still no fire possible faulty distributer?
On a high energy ignition, possible problems include: Faulty keyswitch, faulty wiring or connectors, faulty pickup inside the distributor, faulty electrical condenser, if it has points (depends on the type of HEI) the points could be bad, faulty coil or faulty HEI control module. You will need to identify which component has failed.
