What happens if my distributor cap gets wet?

What’s happening is that the moisture that’s stuck inside the distributor cap is compromising your spark. The spark is sufficient when all the other conditions are perfect, but once rain or moist air steal additional energy via the old spark plug wires, the engine starts misfiring.

What causes corrosion under distributor cap?

One of the most common reasons, is that your distributor cap has a hairline crack that is admitting water and condensation. At times, the distributor cap needs a new gasket, and if the old one is not replaced, it leads to corrosion.

Can I use brake cleaner to clean distributor cap?

pure methanol works very well to remove water, as both alcohols bond to water molecules. I had an 89 Mustang that I just used brake parts cleaner to clean up the inside of the distributor cap. That worked well.

What can I spray on my distributor cap?

Turn off the vehicle and spray the spark plug wires and the inside and outside of your distributor cap with WD-40. Start the car back up to see if that did the trick. Using WD-40 to repel water from spark plugs, distributors, alternators, and batteries is a good way to prevent corrosion and keep moisture away.

How do I keep moisture out of my distributor cap?

Turn off the vehicle and spray the spark plug wires and the inside and outside of your distributor cap with WD-40. Using WD-40 to repel water from spark plugs, distributors, alternators, and batteries is a good way to prevent corrosion and keep moisture away.

How do you waterproof a distributor cap?

Mix a small amount of epoxy glue and place some on the outside of the distributor cap around each pipe. Also please note that you may have an original breather hole in your cap which will now need blanking which can be done with epoxy glue.

Can you spray WD-40 in distributor cap?

WD stands for Water Displacement, so if your spark plugs are wet or you need to drive moisture away from ignition distributors, WD-40 will do the trick. Turn off the vehicle and spray the spark plug wires and the inside and outside of your distributor cap with WD-40.

How do you know if your distributor cap is bad?

Excessive or unusual engine noises Your vehicle may make some very strange noises if the distributor rotor and cap are malfunctioning – specifically because the cylinders will try to fire but fail. You might hear a tapping, clicking, or sputtering sound when the distributor rotor and cap are failing.

How do you seal a distributor?

What’s the best way to dry a distributor cap?

Use a clean, lint-free, dry towel to dry the cap out completely. Leave in a warm place for an hour to complete the drying process. Replace the cap, spark plug wires, bolts and battery the way you took them off.

Why does my car have a wet distributor cap?

by Ashley Kurz. If your car is having problems starting, you may have a wet distributor cap. If the car usually starts, but has trouble starting on rainy or humid days, the distributor cap is the most likely cause. You can dry the distributor cap in order to start the car, and get you where you’re going.

How do you remove a distributor cap on a car?

Use a wrench to remove the battery terminals. Most battery terminals can be removed with a 10 mm wrench, but size it up to be sure so that you don’t strip the bolt heads. Lift the battery out of the car and set it aside so that it is out of your way. Locate the distributor cap.