Fairfield-Echo

Q I have a 1989 Chevrolet Astro Van with a 4.3 liter engine and lots of miles. The engine has been difficult to start. About three months ago I replaced the spark plugs, spark plug wires, distributor cap and distributor rotor.

Less than a week ago I drove the van. This afternoon I tried to start the engine. It cranked fine but it wouldn't start. I checked over the engine and found that it is getting gas but there isn't any spark. Is it possible that the distributor rotor or ignition coil has a fault? Where should I look first? O.G., e-mail.

A Recently you installed a new distributor cap and rotor so these are less likely to have a defect. To be sure remove the cap and inspect it for cracks. If it's cracked replace it.

Also, look for moisture. Often the cap becomes laden with condensation.

If it's wet, spark developed by the ignition coil grounds to the distributor cap and does not travel down the spark plug wires.

If it's wet you can attempt to remove the moisture with a rag or blow it dry with a hair dryer or compressed air. Once it's dry, the engine may start.

If the cap is dry, check the ignition coil. If it is not developing a spark it's possible the ignition module has a fault. Check the connections on the module for corrosion.

If you find corrosion, remove it with a residue-free chemical electrical contact cleaner and soft bristle brush.

If the ignition coil has a fault, replace it.

Battery needs help

Q Recently I replaced the alternator in my 1999 Chevrolet Tahoe. I replaced it because I heard a high pitch sound from the unit that changed with engine speed. Also, it wasn't charging the battery.

Sometimes the battery would die while driving which required a jump start. At other times when I attempted to start the truck after it was parked a while the battery would need a jump.

After I replaced the alternator I gave the battery a quick charge. This worked fine for two days but then the battery died and needed a jump.

Now I'm at a loss. When I turn the key the starter doesn't turn the engine but I know the battery is fine because the interior lights and exterior lights illuminate without any problem.

I also checked all the cables and fuses. Everything is ok.

What should I do? S.R., e-mail.

A This indeed is a dilemma. Make sure the battery cables are free from corrosion inside and out.

Remove the cables and clean the terminals on the battery and cables.

Completely charge the battery. If after a few hours if the battery doesn't store a full charge it's probably time for a new battery, but there may be enough juice to start the engine.

Many auto supply stores have equipment to test a battery. If it fails the tests, replacement should solve this affliction.